organic compounds\(\def\hfill{\hskip 5em}\def\hfil{\hskip 3em}\def\eqno#1{\hfil {#1}}\)

Journal logoCRYSTALLOGRAPHIC
COMMUNICATIONS
ISSN: 2056-9890

Crystal structure of 11-(2,3-di­meth­­oxy­phen­yl)-14-methyl-12-oxa-8,14-di­aza­tetra­cyclo­[8.3.3.01,10.02,7]hexa­deca-2(7),3,5-triene-9,13-dione

aDepartment of Physics, Queen Mary's College (Autonomous), Chennai 600 004, India, bDepartment of Organic Chemistry, University of Madras, Guindy Campus, Chennai 600 025, India, and cDepartment of Physics, Presidency College (Autonomous), Chennai 600 005, India
*Correspondence e-mail: aspandian59@gmail.com

Edited by W. T. A. Harrison, University of Aberdeen, Scotland (Received 23 March 2015; accepted 29 March 2015; online 9 April 2015)

The title compound, C22H22N2O5, contains two conformationally similar mol­ecules (A and B) in its the asymmetric unit (r.m.s. overlay fit for the 29 non-H atoms = 0.194 Å). In each mol­ecule, the lactone ring has an envelope conformation with the spiro C atom as the flap. In the crystal, A+A and B+B inversion dimers linked by pairs of N—H⋯O hydrgen bonds occur; in both cases, R22(8) loops are generated. A weak C—H⋯O inter­action is also observed, which links the dimers into [010] chains.

1. Related literature

For general background and the biological and pharmacological properties of quinoline derivatives, see: Michael (1997[Michael, J. P. (1997). Nat. Prod. Rep. 14, 605-608.]). For a related structure, see: Vennila et al. (2011[Vennila, K. N., Sankaran, M., Mohan, P. S. & Velmurugan, D. (2011). Acta Cryst. E67, o3376-o3377.]).

[Scheme 1]

2. Experimental

2.1. Crystal data

  • C22H22N2O5

  • Mr = 394.42

  • Triclinic, [P \overline 1]

  • a = 10.1360 (4) Å

  • b = 10.3198 (4) Å

  • c = 18.8973 (7) Å

  • α = 89.079 (2)°

  • β = 74.955 (2)°

  • γ = 89.406 (2)°

  • V = 1908.64 (13) Å3

  • Z = 4

  • Mo Kα radiation

  • μ = 0.10 mm−1

  • T = 293 K

  • 0.35 × 0.30 × 0.30 mm

2.2. Data collection

  • Bruker Kappa APEXII CCD diffractometer

  • Absorption correction: multi-scan (SADABS; Bruker, 2004[Bruker (2004). APEX2, SAINT and SADABS. Bruker AXS Inc , Madison, Wisconsin, USA.]) Tmin = 0.967, Tmax = 0.971

  • 35145 measured reflections

  • 6717 independent reflections

  • 5408 reflections with I > 2σ(I)

  • Rint = 0.028

2.3. Refinement

  • R[F2 > 2σ(F2)] = 0.047

  • wR(F2) = 0.128

  • S = 1.02

  • 6717 reflections

  • 532 parameters

  • H atoms treated by a mixture of independent and constrained refinement

  • Δρmax = 0.65 e Å−3

  • Δρmin = −0.54 e Å−3

Table 1
Hydrogen-bond geometry (Å, °)

D—H⋯A D—H H⋯A DA D—H⋯A
N8—H8⋯O9i 0.89 (3) 2.01 (3) 2.903 (2) 177 (2)
N8A—H8A⋯O9Aii 0.89 (2) 2.07 (3) 2.958 (2) 175 (2)
C6A′—H6A′⋯O13Aiii 0.93 2.43 3.322 (3) 161
Symmetry codes: (i) -x, -y+1, -z+1; (ii) -x+1, -y+1, -z; (iii) -x+2, -y, -z.

Data collection: APEX2 (Bruker, 2004[Bruker (2004). APEX2, SAINT and SADABS. Bruker AXS Inc , Madison, Wisconsin, USA.]); cell refinement: SAINT (Bruker, 2004[Bruker (2004). APEX2, SAINT and SADABS. Bruker AXS Inc , Madison, Wisconsin, USA.]); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008[Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.]); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008[Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.]); molecular graphics: ORTEP-3 for Windows (Farrugia, 2012[Farrugia, L. J. (2012). J. Appl. Cryst. 45, 849-854.]); software used to prepare material for publication: SHELXL97 and PLATON (Spek, 2009[Spek, A. L. (2009). Acta Cryst. D65, 148-155.]).

Supporting information


Comment top

Quinolines exhibit physico-chemical activities which are useful in the field of pharmaceuticals and agrochemicals. Their derivatives are also present in a wide variety of natural products involved in several biological activities (Michael, 2006). The crystal structure of the title compound is presented here as a part of our on-going structural studies on quinoline derivatives.

The molecular structure of molecule (A) and molecule (B) is shown in Fig.1. The furan ring (O12A/C11A-C10A/C1A/C13A) of (A) exhibits an envelope conformation with C10A as the flap atom. The furan ring (O12/C11-C10/C1/C13) of (B) exhibits an envelope conformation with C10 as the flap atom. The quinoline ring (N8A/C1A-C10A) is almost coplanar showing a dihedral angle of 2.9 (8)° with the pyridine ring (N8A/C7A/C2A-C1A/C9A-C10A) of molecule (A) and is perpendicular with the pyridine ring (N8/C7/C2-C1/C9-C10) of molecule (B) inclined at an angle of 88.3 (8)°. The sum of angles at N8, N8A of the quinoline rings (360°) is in accordance with sp2 hybridization.

In the crystal of two independent molecules, hydrogen-bonded chains running along bc plane are generated by connecting neighbouring molecules via N-H···O, C-H···O hydrogen bonds forming a two dimensional structure (Fig.2.) The hydrogen bonds of N8-H8···O9 and N8A-H8A···O9A forming inversion dimers but enclosing smaller R22(8) loops and the hydrogen bond of C6A'-H6A'···O13A forms a one dimensional chain along [010] as shown in Fig.3.

Related literature top

For general background and the biological and pharmacological properties of quinoline derivatives, see: Michael (1997). For a related structure, see: Vennila et al. (2011).

Experimental top

A mixture of methyl 2-(hydroxy(m-tolyl)methyl)acrylate (252mgs, 1 mmol), isatin (161.7mgs, 1.1 mmol) and sarcosine (97.9mgs, 1.1 mmol) was placed in a round bottom flask and melted at 180°C until completion of the reaction was evidenced by TLC analysis. After completion of the reaction, the crude product was washed with 5ml of ethylacetate and hexane mixture (1:4 ratio) which successfully provided the pure product as colorless solid. The product was dissolved in ethyl acetate and heated for two minutes. The resulting solution was subjected to crystallization by slow evaporation of the solvent for 48 hours resulting in the formation of colourless blocks.

Refinement top

All H atoms were fixed geometrically and allowed to ride on their parent C atoms, with C-H distances fixed in the range 0.93-0.98 Å with Uiso(H) = 1.5Ueq(C) for methyl H 1.2Ueq(C) for other H atoms.

Structure description top

Quinolines exhibit physico-chemical activities which are useful in the field of pharmaceuticals and agrochemicals. Their derivatives are also present in a wide variety of natural products involved in several biological activities (Michael, 2006). The crystal structure of the title compound is presented here as a part of our on-going structural studies on quinoline derivatives.

The molecular structure of molecule (A) and molecule (B) is shown in Fig.1. The furan ring (O12A/C11A-C10A/C1A/C13A) of (A) exhibits an envelope conformation with C10A as the flap atom. The furan ring (O12/C11-C10/C1/C13) of (B) exhibits an envelope conformation with C10 as the flap atom. The quinoline ring (N8A/C1A-C10A) is almost coplanar showing a dihedral angle of 2.9 (8)° with the pyridine ring (N8A/C7A/C2A-C1A/C9A-C10A) of molecule (A) and is perpendicular with the pyridine ring (N8/C7/C2-C1/C9-C10) of molecule (B) inclined at an angle of 88.3 (8)°. The sum of angles at N8, N8A of the quinoline rings (360°) is in accordance with sp2 hybridization.

In the crystal of two independent molecules, hydrogen-bonded chains running along bc plane are generated by connecting neighbouring molecules via N-H···O, C-H···O hydrogen bonds forming a two dimensional structure (Fig.2.) The hydrogen bonds of N8-H8···O9 and N8A-H8A···O9A forming inversion dimers but enclosing smaller R22(8) loops and the hydrogen bond of C6A'-H6A'···O13A forms a one dimensional chain along [010] as shown in Fig.3.

For general background and the biological and pharmacological properties of quinoline derivatives, see: Michael (1997). For a related structure, see: Vennila et al. (2011).

Computing details top

Data collection: APEX2 (Bruker, 2004); cell refinement: SAINT (Bruker, 2004); data reduction: SAINT (Bruker, 2004); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 for Windows (Farrugia, 2012); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008) and PLATON (Spek, 2009).

Figures top
[Figure 1] Fig. 1. The molecular structure of the title compound with the atom-numbering scheme. Displacement ellipsoids are drawn at the 30% probability level. H atoms are omitted for clarity.
[Figure 2] Fig. 2. The molecular packing is viewed along the a axis. Dashed lines show the intermolecular N—H···O and C—H···O hydrogen bonds. H atoms not involved in hydrogen bonding have been omitted for clarity.
[Figure 3] Fig. 3. A partial view of the N8—H8···O9, N8A—H8A···O9A and C6A'—H6A'···O13A hydrogen-bonding interactions along the c axis.
11-(2,3-Dimethoxyphenyl)-14-methyl-12-oxa-8,14-diazatetracyclo[8.3.3.01,10.02,7]hexadeca-2(7),3,5-triene-9,13-dione top
Crystal data top
C22H22N2O5Z = 4
Mr = 394.42F(000) = 832
Triclinic, P1Dx = 1.373 Mg m3
Hall symbol: -P 1Mo Kα radiation, λ = 0.71073 Å
a = 10.1360 (4) ÅCell parameters from 6717 reflections
b = 10.3198 (4) Åθ = 1.1–25.0°
c = 18.8973 (7) ŵ = 0.10 mm1
α = 89.079 (2)°T = 293 K
β = 74.955 (2)°Block, colourless
γ = 89.406 (2)°0.35 × 0.30 × 0.30 mm
V = 1908.64 (13) Å3
Data collection top
Bruker Kappa APEXII CCD
diffractometer
6717 independent reflections
Radiation source: fine-focus sealed tube5408 reflections with I > 2σ(I)
Graphite monochromatorRint = 0.028
ω and φ scansθmax = 25.0°, θmin = 1.1°
Absorption correction: multi-scan
(SADABS; Bruker, 2004)
h = 1212
Tmin = 0.967, Tmax = 0.971k = 1212
35145 measured reflectionsl = 2222
Refinement top
Refinement on F2Secondary atom site location: difference Fourier map
Least-squares matrix: fullHydrogen site location: inferred from neighbouring sites
R[F2 > 2σ(F2)] = 0.047H atoms treated by a mixture of independent and constrained refinement
wR(F2) = 0.128 w = 1/[σ2(Fo2) + (0.0555P)2 + 1.1105P]
where P = (Fo2 + 2Fc2)/3
S = 1.02(Δ/σ)max < 0.001
6717 reflectionsΔρmax = 0.65 e Å3
532 parametersΔρmin = 0.54 e Å3
0 restraintsExtinction correction: SHELXL97 (Sheldrick, 2008), Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4
Primary atom site location: structure-invariant direct methodsExtinction coefficient: 0.0073 (9)
Crystal data top
C22H22N2O5γ = 89.406 (2)°
Mr = 394.42V = 1908.64 (13) Å3
Triclinic, P1Z = 4
a = 10.1360 (4) ÅMo Kα radiation
b = 10.3198 (4) ŵ = 0.10 mm1
c = 18.8973 (7) ÅT = 293 K
α = 89.079 (2)°0.35 × 0.30 × 0.30 mm
β = 74.955 (2)°
Data collection top
Bruker Kappa APEXII CCD
diffractometer
6717 independent reflections
Absorption correction: multi-scan
(SADABS; Bruker, 2004)
5408 reflections with I > 2σ(I)
Tmin = 0.967, Tmax = 0.971Rint = 0.028
35145 measured reflections
Refinement top
R[F2 > 2σ(F2)] = 0.0470 restraints
wR(F2) = 0.128H atoms treated by a mixture of independent and constrained refinement
S = 1.02Δρmax = 0.65 e Å3
6717 reflectionsΔρmin = 0.54 e Å3
532 parameters
Special details top

Geometry. All esds (except the esd in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell esds are taken into account individually in the estimation of esds in distances, angles and torsion angles; correlations between esds in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell esds is used for estimating esds involving l.s. planes.

Refinement. Refinement of F2 against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F2, conventional R-factors R are based on F, with F set to zero for negative F2. The threshold expression of F2 > 2sigma(F2) is used only for calculating R-factors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F2 are statistically about twice as large as those based on F, and R- factors based on ALL data will be even larger.

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2) top
xyzUiso*/Ueq
C10B1.0615 (3)0.7030 (3)0.25020 (16)0.0810 (9)
H10A1.04380.79430.25280.121*
H10B1.01270.65740.27920.121*
H10C1.15770.68680.26860.121*
H8A0.517 (2)0.461 (2)0.0654 (12)0.049 (6)*
H80.057 (3)0.546 (2)0.4402 (13)0.061 (7)*
C1A0.71903 (18)0.15796 (17)0.06757 (10)0.0323 (4)
O12A0.95534 (13)0.20658 (13)0.02653 (8)0.0433 (4)
O9A0.61164 (15)0.38520 (14)0.05792 (7)0.0448 (4)
N8A0.57191 (17)0.39272 (17)0.06429 (9)0.0379 (4)
C9A0.63693 (18)0.34543 (18)0.00142 (10)0.0324 (4)
O13A0.90527 (15)0.03882 (14)0.10304 (9)0.0530 (4)
O7A'0.86006 (16)0.55593 (14)0.04580 (8)0.0513 (4)
C11A0.88282 (18)0.30883 (18)0.00169 (10)0.0337 (4)
H11A0.86420.38010.03330.040*
C7A0.5767 (2)0.34058 (19)0.13261 (10)0.0367 (4)
C10A0.74578 (18)0.24380 (17)0.00209 (10)0.0301 (4)
N14A0.64191 (16)0.04987 (15)0.04930 (9)0.0389 (4)
C1A'0.97041 (19)0.35816 (18)0.07344 (11)0.0363 (4)
C2A0.64674 (19)0.22556 (19)0.13708 (10)0.0355 (4)
C16A0.7560 (2)0.14502 (19)0.06377 (11)0.0400 (5)
H16A0.69610.17000.09430.048*
H16B0.84890.13970.09430.048*
C13A0.8671 (2)0.12459 (19)0.06982 (11)0.0378 (5)
C2A'0.9520 (2)0.48460 (18)0.09543 (11)0.0362 (4)
C3A'1.0346 (2)0.5333 (2)0.16135 (12)0.0457 (5)
C3A0.6440 (2)0.1761 (2)0.20631 (12)0.0504 (6)
H3A0.69210.10040.21050.060*
C15A0.7124 (2)0.0159 (2)0.02557 (12)0.0449 (5)
H15A0.65180.02930.04890.054*
H15B0.79120.03880.02650.054*
C6A0.5070 (2)0.4038 (2)0.19557 (12)0.0512 (6)
H6A0.46200.48180.19210.061*
O9A'1.0186 (2)0.66034 (16)0.17763 (10)0.0789 (6)
C6A'1.0697 (2)0.2811 (2)0.11824 (14)0.0544 (6)
H6A'1.08290.19630.10390.065*
C4A'1.1314 (3)0.4546 (2)0.20506 (14)0.0599 (6)
H4A'1.18550.48640.24930.072*
C4A0.5714 (3)0.2371 (3)0.26883 (13)0.0615 (7)
H4A0.56800.20100.31470.074*
C17A0.6138 (2)0.0621 (2)0.09891 (14)0.0548 (6)
H17A0.56770.03410.14730.082*
H17B0.69830.10400.10000.082*
H17C0.55710.12190.08210.082*
C5A0.5043 (3)0.3513 (3)0.26324 (13)0.0610 (7)
H5A0.45680.39340.30540.073*
C8A'0.7778 (3)0.6521 (2)0.06863 (16)0.0621 (7)
H8A10.71950.69250.02640.093*
H8A20.72280.61240.09660.093*
H8A30.83540.71630.09840.093*
C5A'1.1486 (3)0.3291 (3)0.18348 (15)0.0672 (7)
H5A'1.21430.27640.21330.081*
N80.12270 (18)0.60382 (17)0.43819 (9)0.0413 (4)
O120.29646 (15)0.96066 (13)0.46254 (8)0.0480 (4)
C10.36492 (18)0.74700 (18)0.42665 (10)0.0334 (4)
C20.31784 (19)0.71338 (18)0.35954 (10)0.0348 (4)
C70.1971 (2)0.64514 (18)0.36828 (10)0.0360 (4)
O90.09671 (17)0.57648 (16)0.55871 (8)0.0579 (5)
O130.50407 (15)0.94355 (15)0.38830 (9)0.0551 (4)
C100.25101 (19)0.74324 (18)0.49834 (10)0.0322 (4)
C110.1820 (2)0.87718 (18)0.49699 (11)0.0374 (4)
H110.11970.87330.46520.045*
N140.46780 (16)0.65966 (17)0.44204 (10)0.0423 (4)
C90.1510 (2)0.63346 (19)0.50162 (10)0.0372 (4)
C130.4009 (2)0.89217 (19)0.42184 (11)0.0388 (5)
C1'0.1075 (2)0.93454 (19)0.56880 (12)0.0426 (5)
C30.3898 (2)0.7494 (2)0.28913 (11)0.0426 (5)
H30.46970.79690.28230.051*
C40.3449 (2)0.7160 (2)0.22934 (11)0.0471 (5)
H40.39570.73870.18240.057*
C2'0.0258 (2)0.8978 (2)0.60066 (11)0.0432 (5)
C160.3306 (2)0.7269 (2)0.55711 (11)0.0437 (5)
H16C0.32820.80660.58400.052*
H16D0.29180.65800.59140.052*
C60.1502 (2)0.6138 (2)0.30803 (11)0.0461 (5)
H60.06870.56910.31450.055*
C50.2246 (2)0.6489 (2)0.23883 (11)0.0491 (5)
H50.19370.62730.19830.059*
O7'0.07771 (17)0.8186 (2)0.55922 (10)0.0873 (7)
C150.4763 (2)0.6935 (2)0.51562 (12)0.0511 (6)
H15C0.53600.76710.51370.061*
H15D0.51090.62090.53890.061*
C3'0.0965 (2)0.9489 (2)0.66811 (13)0.0518 (6)
C6'0.1686 (3)1.0237 (3)0.60371 (16)0.0825 (10)
H6'0.25821.04910.58280.099*
O9'0.22558 (19)0.9071 (3)0.69852 (11)0.0991 (8)
C170.5998 (2)0.6501 (2)0.38864 (14)0.0579 (6)
H17D0.65680.58920.40610.087*
H17E0.64260.73350.38170.087*
H17F0.58710.62120.34280.087*
C5'0.0973 (4)1.0747 (3)0.66906 (19)0.1108 (15)
H5'0.13881.13520.69200.133*
C4'0.0340 (3)1.0379 (3)0.70101 (16)0.0753 (9)
H4'0.08111.07360.74540.090*
C8'0.1935 (3)0.7448 (3)0.58216 (18)0.0735 (8)
H8'10.20800.69770.54150.110*
H8'20.27070.80030.60130.110*
H8'30.18270.68490.61970.110*
C10'0.2794 (3)0.9163 (3)0.77410 (16)0.0827 (9)
H10D0.37070.88290.78740.124*
H10E0.28091.00550.78810.124*
H10F0.22360.86700.79880.124*
Atomic displacement parameters (Å2) top
U11U22U33U12U13U23
C10B0.101 (2)0.0716 (19)0.0727 (19)0.0136 (17)0.0279 (17)0.0330 (15)
C1A0.0312 (10)0.0281 (9)0.0380 (10)0.0034 (7)0.0103 (8)0.0037 (8)
O12A0.0312 (7)0.0457 (8)0.0549 (9)0.0008 (6)0.0157 (6)0.0150 (7)
O9A0.0504 (9)0.0500 (9)0.0365 (8)0.0156 (7)0.0163 (7)0.0022 (6)
N8A0.0395 (9)0.0367 (9)0.0354 (9)0.0147 (8)0.0066 (7)0.0016 (7)
C9A0.0305 (9)0.0323 (10)0.0344 (10)0.0026 (8)0.0086 (8)0.0022 (8)
O13A0.0475 (9)0.0455 (9)0.0692 (11)0.0064 (7)0.0221 (8)0.0192 (8)
O7A'0.0623 (10)0.0355 (8)0.0500 (9)0.0118 (7)0.0041 (8)0.0015 (7)
C11A0.0325 (10)0.0314 (10)0.0390 (11)0.0029 (8)0.0126 (8)0.0021 (8)
C7A0.0365 (10)0.0396 (11)0.0332 (10)0.0015 (8)0.0074 (8)0.0003 (8)
C10A0.0294 (9)0.0294 (9)0.0322 (10)0.0035 (7)0.0095 (8)0.0001 (7)
N14A0.0348 (9)0.0306 (8)0.0509 (10)0.0021 (7)0.0107 (8)0.0028 (7)
C1A'0.0311 (10)0.0357 (10)0.0417 (11)0.0013 (8)0.0089 (8)0.0011 (8)
C2A0.0347 (10)0.0389 (11)0.0337 (10)0.0007 (8)0.0106 (8)0.0039 (8)
C16A0.0434 (11)0.0382 (11)0.0385 (11)0.0031 (9)0.0106 (9)0.0069 (9)
C13A0.0367 (10)0.0343 (10)0.0442 (11)0.0033 (8)0.0141 (9)0.0051 (9)
C2A'0.0384 (10)0.0316 (10)0.0383 (11)0.0006 (8)0.0090 (9)0.0039 (8)
C3A'0.0532 (13)0.0374 (11)0.0450 (12)0.0072 (10)0.0099 (10)0.0053 (9)
C3A0.0544 (13)0.0573 (14)0.0417 (12)0.0022 (11)0.0171 (11)0.0096 (10)
C15A0.0451 (12)0.0357 (11)0.0536 (13)0.0020 (9)0.0117 (10)0.0092 (9)
C6A0.0553 (14)0.0508 (13)0.0428 (13)0.0082 (11)0.0045 (10)0.0073 (10)
O9A'0.1098 (16)0.0449 (10)0.0646 (12)0.0027 (10)0.0074 (11)0.0184 (9)
C6A'0.0436 (12)0.0444 (13)0.0654 (15)0.0104 (10)0.0025 (11)0.0081 (11)
C4A'0.0549 (14)0.0604 (15)0.0526 (14)0.0031 (12)0.0070 (12)0.0084 (12)
C4A0.0676 (16)0.0842 (19)0.0338 (12)0.0039 (14)0.0156 (11)0.0072 (12)
C17A0.0480 (13)0.0396 (12)0.0730 (16)0.0069 (10)0.0091 (12)0.0135 (11)
C5A0.0637 (16)0.0794 (18)0.0354 (12)0.0022 (14)0.0040 (11)0.0119 (12)
C8A'0.0543 (14)0.0403 (13)0.090 (2)0.0068 (11)0.0166 (14)0.0033 (12)
C5A'0.0538 (15)0.0607 (16)0.0698 (17)0.0129 (12)0.0144 (13)0.0020 (13)
N80.0456 (10)0.0458 (10)0.0310 (9)0.0206 (8)0.0067 (7)0.0022 (7)
O120.0506 (9)0.0326 (7)0.0507 (9)0.0067 (6)0.0046 (7)0.0040 (6)
C10.0315 (10)0.0352 (10)0.0326 (10)0.0048 (8)0.0066 (8)0.0031 (8)
C20.0374 (10)0.0339 (10)0.0307 (10)0.0024 (8)0.0046 (8)0.0006 (8)
C70.0418 (11)0.0346 (10)0.0305 (10)0.0045 (8)0.0071 (8)0.0015 (8)
O90.0753 (11)0.0630 (10)0.0348 (8)0.0380 (9)0.0126 (8)0.0138 (7)
O130.0449 (9)0.0522 (9)0.0619 (10)0.0192 (7)0.0023 (8)0.0087 (8)
C100.0333 (10)0.0345 (10)0.0293 (9)0.0060 (8)0.0088 (8)0.0019 (8)
C110.0358 (10)0.0372 (11)0.0365 (11)0.0057 (8)0.0049 (8)0.0047 (8)
N140.0338 (9)0.0466 (10)0.0458 (10)0.0019 (7)0.0091 (8)0.0045 (8)
C90.0406 (11)0.0379 (11)0.0318 (10)0.0099 (9)0.0070 (9)0.0035 (8)
C130.0380 (11)0.0403 (11)0.0372 (11)0.0088 (9)0.0081 (9)0.0046 (9)
C1'0.0447 (12)0.0347 (11)0.0440 (12)0.0009 (9)0.0041 (9)0.0012 (9)
C30.0424 (11)0.0434 (12)0.0374 (11)0.0054 (9)0.0021 (9)0.0021 (9)
C40.0589 (14)0.0477 (12)0.0298 (11)0.0007 (10)0.0028 (10)0.0024 (9)
C2'0.0395 (11)0.0517 (12)0.0386 (11)0.0032 (9)0.0106 (9)0.0002 (9)
C160.0473 (12)0.0494 (12)0.0385 (11)0.0036 (10)0.0184 (10)0.0034 (9)
C60.0535 (13)0.0474 (12)0.0387 (12)0.0120 (10)0.0137 (10)0.0025 (9)
C50.0679 (15)0.0490 (13)0.0326 (11)0.0033 (11)0.0167 (10)0.0033 (9)
O7'0.0427 (9)0.153 (2)0.0628 (12)0.0300 (11)0.0035 (8)0.0395 (12)
C150.0451 (12)0.0608 (14)0.0531 (14)0.0037 (11)0.0234 (11)0.0089 (11)
C3'0.0448 (12)0.0591 (14)0.0462 (13)0.0061 (11)0.0026 (10)0.0012 (11)
C6'0.0755 (19)0.0697 (18)0.081 (2)0.0368 (15)0.0209 (15)0.0341 (15)
O9'0.0486 (11)0.178 (2)0.0603 (12)0.0212 (13)0.0080 (9)0.0357 (14)
C170.0378 (12)0.0619 (15)0.0693 (16)0.0054 (11)0.0058 (11)0.0029 (12)
C5'0.113 (3)0.090 (2)0.098 (2)0.056 (2)0.034 (2)0.056 (2)
C4'0.087 (2)0.0551 (16)0.0642 (17)0.0073 (14)0.0179 (15)0.0229 (13)
C8'0.0470 (14)0.0657 (17)0.104 (2)0.0104 (12)0.0114 (14)0.0082 (16)
C10'0.0645 (18)0.103 (2)0.0633 (18)0.0090 (16)0.0159 (14)0.0132 (16)
Geometric parameters (Å, º) top
C10B—O9A'1.392 (3)N8—C91.344 (2)
C10B—H10A0.9600N8—C71.403 (2)
C10B—H10B0.9600N8—H80.89 (3)
C10B—H10C0.9600O12—C131.338 (2)
C1A—N14A1.465 (2)O12—C111.457 (2)
C1A—C2A1.506 (3)C1—N141.454 (2)
C1A—C10A1.541 (2)C1—C21.513 (3)
C1A—C13A1.548 (3)C1—C101.535 (3)
O12A—C13A1.341 (2)C1—C131.541 (3)
O12A—C11A1.452 (2)C2—C31.388 (3)
O9A—C9A1.225 (2)C2—C71.389 (3)
N8A—C9A1.343 (2)C7—C61.387 (3)
N8A—C7A1.403 (2)O9—C91.221 (2)
N8A—H8A0.89 (2)O13—C131.197 (2)
C9A—C10A1.512 (2)C10—C91.518 (2)
O13A—C13A1.195 (2)C10—C161.539 (3)
O7A'—C2A'1.358 (2)C10—C111.546 (3)
O7A'—C8A'1.422 (3)C11—C1'1.499 (3)
C11A—C1A'1.499 (3)C11—H110.9800
C11A—C10A1.551 (2)N14—C171.455 (3)
C11A—H11A0.9800N14—C151.463 (3)
C7A—C6A1.386 (3)C1'—C6'1.381 (3)
C7A—C2A1.390 (3)C1'—C2'1.383 (3)
C10A—C16A1.543 (3)C3—C41.373 (3)
N14A—C15A1.457 (3)C3—H30.9300
N14A—C17A1.459 (3)C4—C51.378 (3)
C1A'—C6A'1.388 (3)C4—H40.9300
C1A'—C2A'1.388 (3)C2'—O7'1.343 (3)
C2A—C3A1.390 (3)C2'—C3'1.398 (3)
C16A—C15A1.519 (3)C16—C151.521 (3)
C16A—H16A0.9700C16—H16C0.9700
C16A—H16B0.9700C16—H16D0.9700
C2A'—C3A'1.398 (3)C6—C51.374 (3)
C3A'—O9A'1.359 (3)C6—H60.9300
C3A'—C4A'1.374 (3)C5—H50.9300
C3A—C4A1.377 (3)O7'—C8'1.374 (3)
C3A—H3A0.9300C15—H15C0.9700
C15A—H15A0.9700C15—H15D0.9700
C15A—H15B0.9700C3'—O9'1.357 (3)
C6A—C5A1.375 (3)C3'—C4'1.366 (4)
C6A—H6A0.9300C6'—C5'1.369 (4)
C6A'—C5A'1.372 (3)C6'—H6'0.9300
C6A'—H6A'0.9300O9'—C10'1.395 (3)
C4A'—C5A'1.375 (4)C17—H17D0.9600
C4A'—H4A'0.9300C17—H17E0.9600
C4A—C5A1.370 (4)C17—H17F0.9600
C4A—H4A0.9300C5'—C4'1.366 (4)
C17A—H17A0.9600C5'—H5'0.9300
C17A—H17B0.9600C4'—H4'0.9300
C17A—H17C0.9600C8'—H8'10.9600
C5A—H5A0.9300C8'—H8'20.9600
C8A'—H8A10.9600C8'—H8'30.9600
C8A'—H8A20.9600C10'—H10D0.9600
C8A'—H8A30.9600C10'—H10E0.9600
C5A'—H5A'0.9300C10'—H10F0.9600
O9A'—C10B—H10A109.5C9—N8—C7125.51 (16)
O9A'—C10B—H10B109.5C9—N8—H8117.3 (16)
H10A—C10B—H10B109.5C7—N8—H8116.9 (16)
O9A'—C10B—H10C109.5C13—O12—C11111.27 (15)
H10A—C10B—H10C109.5N14—C1—C2114.61 (16)
H10B—C10B—H10C109.5N14—C1—C10103.07 (15)
N14A—C1A—C2A113.64 (15)C2—C1—C10113.98 (15)
N14A—C1A—C10A102.66 (14)N14—C1—C13115.71 (15)
C2A—C1A—C10A114.65 (15)C2—C1—C13108.15 (15)
N14A—C1A—C13A115.07 (15)C10—C1—C13100.52 (15)
C2A—C1A—C13A109.39 (15)C3—C2—C7118.31 (18)
C10A—C1A—C13A100.71 (14)C3—C2—C1122.57 (17)
C13A—O12A—C11A110.64 (14)C7—C2—C1119.12 (16)
C9A—N8A—C7A126.00 (17)C6—C7—C2120.67 (18)
C9A—N8A—H8A117.9 (15)C6—C7—N8118.95 (17)
C7A—N8A—H8A116.0 (15)C2—C7—N8120.36 (17)
O9A—C9A—N8A121.57 (17)C9—C10—C1113.04 (15)
O9A—C9A—C10A121.93 (17)C9—C10—C16111.75 (15)
N8A—C9A—C10A116.47 (16)C1—C10—C16102.91 (15)
C2A'—O7A'—C8A'121.12 (18)C9—C10—C11111.71 (15)
O12A—C11A—C1A'109.37 (15)C1—C10—C11102.04 (14)
O12A—C11A—C10A103.00 (14)C16—C10—C11114.72 (16)
C1A'—C11A—C10A117.58 (15)O12—C11—C1'108.71 (15)
O12A—C11A—H11A108.8O12—C11—C10102.87 (15)
C1A'—C11A—H11A108.8C1'—C11—C10117.93 (16)
C10A—C11A—H11A108.8O12—C11—H11109.0
C6A—C7A—C2A120.61 (18)C1'—C11—H11109.0
C6A—C7A—N8A118.81 (18)C10—C11—H11109.0
C2A—C7A—N8A120.56 (17)C1—N14—C17118.80 (17)
C9A—C10A—C1A114.39 (15)C1—N14—C15104.91 (16)
C9A—C10A—C16A111.90 (15)C17—N14—C15113.96 (18)
C1A—C10A—C16A103.25 (14)O9—C9—N8121.40 (17)
C9A—C10A—C11A110.44 (14)O9—C9—C10122.32 (17)
C1A—C10A—C11A101.78 (14)N8—C9—C10116.26 (16)
C16A—C10A—C11A114.60 (15)O13—C13—O12121.44 (19)
C15A—N14A—C17A113.06 (17)O13—C13—C1128.59 (19)
C15A—N14A—C1A105.39 (15)O12—C13—C1109.97 (15)
C17A—N14A—C1A118.68 (17)C6'—C1'—C2'119.2 (2)
C6A'—C1A'—C2A'119.18 (19)C6'—C1'—C11121.6 (2)
C6A'—C1A'—C11A121.77 (18)C2'—C1'—C11119.20 (18)
C2A'—C1A'—C11A119.05 (17)C4—C3—C2121.04 (19)
C7A—C2A—C3A118.03 (19)C4—C3—H3119.5
C7A—C2A—C1A119.21 (16)C2—C3—H3119.5
C3A—C2A—C1A122.74 (18)C3—C4—C5120.03 (19)
C15A—C16A—C10A105.86 (16)C3—C4—H4120.0
C15A—C16A—H16A110.6C5—C4—H4120.0
C10A—C16A—H16A110.6O7'—C2'—C1'113.90 (19)
C15A—C16A—H16B110.6O7'—C2'—C3'125.9 (2)
C10A—C16A—H16B110.6C1'—C2'—C3'120.1 (2)
H16A—C16A—H16B108.7C15—C16—C10105.64 (16)
O13A—C13A—O12A121.52 (18)C15—C16—H16C110.6
O13A—C13A—C1A128.10 (18)C10—C16—H16C110.6
O12A—C13A—C1A110.37 (15)C15—C16—H16D110.6
O7A'—C2A'—C1A'115.13 (17)C10—C16—H16D110.6
O7A'—C2A'—C3A'124.65 (18)H16C—C16—H16D108.7
C1A'—C2A'—C3A'119.92 (19)C5—C6—C7119.8 (2)
O9A'—C3A'—C4A'122.8 (2)C5—C6—H6120.1
O9A'—C3A'—C2A'117.4 (2)C7—C6—H6120.1
C4A'—C3A'—C2A'119.8 (2)C6—C5—C4120.1 (2)
C4A—C3A—C2A121.3 (2)C6—C5—H5120.0
C4A—C3A—H3A119.4C4—C5—H5120.0
C2A—C3A—H3A119.4C2'—O7'—C8'126.5 (2)
N14A—C15A—C16A104.53 (16)N14—C15—C16104.96 (16)
N14A—C15A—H15A110.8N14—C15—H15C110.8
C16A—C15A—H15A110.8C16—C15—H15C110.8
N14A—C15A—H15B110.8N14—C15—H15D110.8
C16A—C15A—H15B110.8C16—C15—H15D110.8
H15A—C15A—H15B108.9H15C—C15—H15D108.8
C5A—C6A—C7A119.9 (2)O9'—C3'—C4'122.5 (2)
C5A—C6A—H6A120.0O9'—C3'—C2'118.2 (2)
C7A—C6A—H6A120.0C4'—C3'—C2'119.4 (2)
C3A'—O9A'—C10B119.3 (2)C5'—C6'—C1'120.0 (2)
C5A'—C6A'—C1A'120.4 (2)C5'—C6'—H6'120.0
C5A'—C6A'—H6A'119.8C1'—C6'—H6'120.0
C1A'—C6A'—H6A'119.8C3'—O9'—C10'119.0 (2)
C3A'—C4A'—C5A'120.2 (2)N14—C17—H17D109.5
C3A'—C4A'—H4A'119.9N14—C17—H17E109.5
C5A'—C4A'—H4A'119.9H17D—C17—H17E109.5
C5A—C4A—C3A119.8 (2)N14—C17—H17F109.5
C5A—C4A—H4A120.1H17D—C17—H17F109.5
C3A—C4A—H4A120.1H17E—C17—H17F109.5
N14A—C17A—H17A109.5C4'—C5'—C6'120.9 (3)
N14A—C17A—H17B109.5C4'—C5'—H5'119.6
H17A—C17A—H17B109.5C6'—C5'—H5'119.6
N14A—C17A—H17C109.5C3'—C4'—C5'120.3 (2)
H17A—C17A—H17C109.5C3'—C4'—H4'119.8
H17B—C17A—H17C109.5C5'—C4'—H4'119.8
C4A—C5A—C6A120.3 (2)O7'—C8'—H8'1109.5
C4A—C5A—H5A119.8O7'—C8'—H8'2109.5
C6A—C5A—H5A119.8H8'1—C8'—H8'2109.5
O7A'—C8A'—H8A1109.5O7'—C8'—H8'3109.5
O7A'—C8A'—H8A2109.5H8'1—C8'—H8'3109.5
H8A1—C8A'—H8A2109.5H8'2—C8'—H8'3109.5
O7A'—C8A'—H8A3109.5O9'—C10'—H10D109.5
H8A1—C8A'—H8A3109.5O9'—C10'—H10E109.5
H8A2—C8A'—H8A3109.5H10D—C10'—H10E109.5
C6A'—C5A'—C4A'120.5 (2)O9'—C10'—H10F109.5
C6A'—C5A'—H5A'119.7H10D—C10'—H10F109.5
C4A'—C5A'—H5A'119.7H10E—C10'—H10F109.5
C7A—N8A—C9A—O9A169.07 (18)N14—C1—C2—C382.4 (2)
C7A—N8A—C9A—C10A12.8 (3)C10—C1—C2—C3159.17 (18)
C13A—O12A—C11A—C1A'153.09 (16)C13—C1—C2—C348.3 (2)
C13A—O12A—C11A—C10A27.3 (2)N14—C1—C2—C798.4 (2)
C9A—N8A—C7A—C6A177.86 (19)C10—C1—C2—C720.0 (3)
C9A—N8A—C7A—C2A4.0 (3)C13—C1—C2—C7130.91 (18)
O9A—C9A—C10A—C1A150.95 (18)C3—C2—C7—C60.1 (3)
N8A—C9A—C10A—C1A30.9 (2)C1—C2—C7—C6179.38 (19)
O9A—C9A—C10A—C16A34.0 (2)C3—C2—C7—N8178.38 (18)
N8A—C9A—C10A—C16A147.90 (17)C1—C2—C7—N82.4 (3)
O9A—C9A—C10A—C11A95.0 (2)C9—N8—C7—C6175.7 (2)
N8A—C9A—C10A—C11A83.2 (2)C9—N8—C7—C26.0 (3)
N14A—C1A—C10A—C9A90.48 (17)N14—C1—C10—C986.85 (18)
C2A—C1A—C10A—C9A33.2 (2)C2—C1—C10—C938.0 (2)
C13A—C1A—C10A—C9A150.54 (15)C13—C1—C10—C9153.41 (16)
N14A—C1A—C10A—C16A31.36 (17)N14—C1—C10—C1633.86 (18)
C2A—C1A—C10A—C16A155.09 (15)C2—C1—C10—C16158.69 (16)
C13A—C1A—C10A—C16A87.62 (16)C13—C1—C10—C1685.88 (17)
N14A—C1A—C10A—C11A150.43 (14)N14—C1—C10—C11153.04 (14)
C2A—C1A—C10A—C11A85.84 (17)C2—C1—C10—C1182.13 (18)
C13A—C1A—C10A—C11A31.45 (17)C13—C1—C10—C1133.30 (17)
O12A—C11A—C10A—C9A158.13 (15)C13—O12—C11—C1'148.84 (17)
C1A'—C11A—C10A—C9A81.6 (2)C13—O12—C11—C1023.1 (2)
O12A—C11A—C10A—C1A36.27 (17)C9—C10—C11—O12156.02 (15)
C1A'—C11A—C10A—C1A156.57 (16)C1—C10—C11—O1234.98 (17)
O12A—C11A—C10A—C16A74.39 (18)C16—C10—C11—O1275.49 (19)
C1A'—C11A—C10A—C16A45.9 (2)C9—C10—C11—C1'84.4 (2)
C2A—C1A—N14A—C15A168.15 (16)C1—C10—C11—C1'154.55 (16)
C10A—C1A—N14A—C15A43.74 (18)C16—C10—C11—C1'44.1 (2)
C13A—C1A—N14A—C15A64.6 (2)C2—C1—N14—C1762.7 (2)
C2A—C1A—N14A—C17A64.0 (2)C10—C1—N14—C17172.91 (18)
C10A—C1A—N14A—C17A171.59 (17)C13—C1—N14—C1764.3 (2)
C13A—C1A—N14A—C17A63.2 (2)C2—C1—N14—C15168.57 (16)
O12A—C11A—C1A'—C6A'26.3 (3)C10—C1—N14—C1544.15 (18)
C10A—C11A—C1A'—C6A'90.6 (2)C13—C1—N14—C1564.5 (2)
O12A—C11A—C1A'—C2A'153.38 (17)C7—N8—C9—O9167.2 (2)
C10A—C11A—C1A'—C2A'89.7 (2)C7—N8—C9—C1014.3 (3)
C6A—C7A—C2A—C3A0.3 (3)C1—C10—C9—O9145.7 (2)
N8A—C7A—C2A—C3A177.79 (19)C16—C10—C9—O930.2 (3)
C6A—C7A—C2A—C1A178.77 (18)C11—C10—C9—O999.9 (2)
N8A—C7A—C2A—C1A0.6 (3)C1—C10—C9—N835.7 (2)
N14A—C1A—C2A—C7A99.4 (2)C16—C10—C9—N8151.28 (19)
C10A—C1A—C2A—C7A18.2 (2)C11—C10—C9—N878.7 (2)
C13A—C1A—C2A—C7A130.44 (18)C11—O12—C13—O13179.06 (19)
N14A—C1A—C2A—C3A78.9 (2)C11—O12—C13—C11.1 (2)
C10A—C1A—C2A—C3A163.43 (18)N14—C1—C13—O1348.4 (3)
C13A—C1A—C2A—C3A51.2 (2)C2—C1—C13—O1381.7 (3)
C9A—C10A—C16A—C15A114.59 (18)C10—C1—C13—O13158.5 (2)
C1A—C10A—C16A—C15A8.91 (19)N14—C1—C13—O12131.46 (18)
C11A—C10A—C16A—C15A118.69 (17)C2—C1—C13—O1298.43 (18)
C11A—O12A—C13A—O13A174.39 (19)C10—C1—C13—O1221.30 (19)
C11A—O12A—C13A—C1A6.6 (2)O12—C11—C1'—C6'19.7 (3)
N14A—C1A—C13A—O13A52.4 (3)C10—C11—C1'—C6'96.8 (3)
C2A—C1A—C13A—O13A76.9 (3)O12—C11—C1'—C2'159.99 (18)
C10A—C1A—C13A—O13A162.0 (2)C10—C11—C1'—C2'83.5 (2)
N14A—C1A—C13A—O12A126.50 (17)C7—C2—C3—C41.5 (3)
C2A—C1A—C13A—O12A104.16 (18)C1—C2—C3—C4179.28 (19)
C10A—C1A—C13A—O12A16.9 (2)C2—C3—C4—C51.9 (3)
C8A'—O7A'—C2A'—C1A'146.66 (19)C6'—C1'—C2'—O7'175.2 (3)
C8A'—O7A'—C2A'—C3A'39.6 (3)C11—C1'—C2'—O7'4.5 (3)
C6A'—C1A'—C2A'—O7A'175.19 (19)C6'—C1'—C2'—C3'1.2 (4)
C11A—C1A'—C2A'—O7A'4.5 (3)C11—C1'—C2'—C3'179.14 (19)
C6A'—C1A'—C2A'—C3A'1.1 (3)C9—C10—C16—C15109.63 (19)
C11A—C1A'—C2A'—C3A'178.60 (18)C1—C10—C16—C1512.0 (2)
O7A'—C2A'—C3A'—O9A'2.0 (3)C11—C10—C16—C15121.91 (18)
C1A'—C2A'—C3A'—O9A'175.4 (2)C2—C7—C6—C50.9 (3)
O7A'—C2A'—C3A'—C4A'175.2 (2)N8—C7—C6—C5177.4 (2)
C1A'—C2A'—C3A'—C4A'1.7 (3)C7—C6—C5—C40.5 (3)
C7A—C2A—C3A—C4A1.5 (3)C3—C4—C5—C60.8 (3)
C1A—C2A—C3A—C4A176.8 (2)C1'—C2'—O7'—C8'164.7 (3)
C17A—N14A—C15A—C16A169.27 (17)C3'—C2'—O7'—C8'19.2 (4)
C1A—N14A—C15A—C16A38.11 (19)C1—N14—C15—C1636.4 (2)
C10A—C16A—C15A—N14A16.9 (2)C17—N14—C15—C16167.98 (18)
C2A—C7A—C6A—C5A1.4 (3)C10—C16—C15—N1414.0 (2)
N8A—C7A—C6A—C5A176.7 (2)O7'—C2'—C3'—O9'6.2 (4)
C4A'—C3A'—O9A'—C10B24.3 (4)C1'—C2'—C3'—O9'177.9 (2)
C2A'—C3A'—O9A'—C10B158.7 (2)O7'—C2'—C3'—C4'174.0 (3)
C2A'—C1A'—C6A'—C5A'0.1 (4)C1'—C2'—C3'—C4'1.9 (4)
C11A—C1A'—C6A'—C5A'179.8 (2)C2'—C1'—C6'—C5'0.0 (5)
O9A'—C3A'—C4A'—C5A'175.9 (3)C11—C1'—C6'—C5'179.6 (3)
C2A'—C3A'—C4A'—C5A'1.1 (4)C4'—C3'—O9'—C10'23.3 (4)
C2A—C3A—C4A—C5A2.3 (4)C2'—C3'—O9'—C10'156.6 (3)
C3A—C4A—C5A—C6A1.2 (4)C1'—C6'—C5'—C4'0.6 (6)
C7A—C6A—C5A—C4A0.6 (4)O9'—C3'—C4'—C5'178.5 (3)
C1A'—C6A'—C5A'—C4A'0.7 (4)C2'—C3'—C4'—C5'1.4 (5)
C3A'—C4A'—C5A'—C6A'0.1 (4)C6'—C5'—C4'—C3'0.1 (6)
Hydrogen-bond geometry (Å, º) top
D—H···AD—HH···AD···AD—H···A
N8—H8···O9i0.89 (3)2.01 (3)2.903 (2)177 (2)
N8A—H8A···O9Aii0.89 (2)2.07 (3)2.958 (2)175 (2)
C6A—H6A···O13Aiii0.932.433.322 (3)161
Symmetry codes: (i) x, y+1, z+1; (ii) x+1, y+1, z; (iii) x+2, y, z.
Hydrogen-bond geometry (Å, º) top
D—H···AD—HH···AD···AD—H···A
N8—H8···O9i0.89 (3)2.01 (3)2.903 (2)177 (2)
N8A—H8A···O9Aii0.89 (2)2.07 (3)2.958 (2)175 (2)
C6A'—H6A'···O13Aiii0.932.433.322 (3)161
Symmetry codes: (i) x, y+1, z+1; (ii) x+1, y+1, z; (iii) x+2, y, z.
 

Acknowledgements

The authors thank Dr Babu Vargheese, SAIF, IIT, Madras, India, for the data collection.

References

First citationBruker (2004). APEX2, SAINT and SADABS. Bruker AXS Inc , Madison, Wisconsin, USA.  Google Scholar
First citationFarrugia, L. J. (2012). J. Appl. Cryst. 45, 849–854.  Web of Science CrossRef CAS IUCr Journals Google Scholar
First citationMichael, J. P. (1997). Nat. Prod. Rep. 14, 605–608.  CrossRef CAS Web of Science Google Scholar
First citationSheldrick, G. M. (2008). Acta Cryst. A64, 112–122.  Web of Science CrossRef CAS IUCr Journals Google Scholar
First citationSpek, A. L. (2009). Acta Cryst. D65, 148–155.  Web of Science CrossRef CAS IUCr Journals Google Scholar
First citationVennila, K. N., Sankaran, M., Mohan, P. S. & Velmurugan, D. (2011). Acta Cryst. E67, o3376–o3377.  Web of Science CSD CrossRef IUCr Journals Google Scholar

This is an open-access article distributed under the terms of the Creative Commons Attribution (CC-BY) Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.

Journal logoCRYSTALLOGRAPHIC
COMMUNICATIONS
ISSN: 2056-9890
Follow Acta Cryst. E
Sign up for e-alerts
Follow Acta Cryst. on Twitter
Follow us on facebook
Sign up for RSS feeds