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The title compound, C25H21N3O4, was synthesized by the reaction of 5-meth­oxy-1H-indole and 3-nitro­benzaldehyde in ethanol using CuBr2 as a catalyst under microwave irradiation. In the crystal structure, there is one inter­molecular N—H...O hydrogen bond and one inter­molecular N—H...π contact.

Supporting information

cif

Crystallographic Information File (CIF) https://doi.org/10.1107/S1600536806032727/bt2169sup1.cif
Contains datablocks global, I

hkl

Structure factor file (CIF format) https://doi.org/10.1107/S1600536806032727/bt2169Isup2.hkl
Contains datablock I

CCDC reference: 620698

Key indicators

  • Single-crystal X-ray study
  • T = 293 K
  • Mean [sigma](C-C) = 0.004 Å
  • R factor = 0.061
  • wR factor = 0.192
  • Data-to-parameter ratio = 14.1

checkCIF/PLATON results

No syntax errors found



Alert level C PLAT066_ALERT_1_C Predicted and Reported Transmissions Identical . ? PLAT340_ALERT_3_C Low Bond Precision on C-C bonds (x 1000) Ang ... 5 PLAT420_ALERT_2_C D-H Without Acceptor N1 - H1A ... ? PLAT790_ALERT_4_C Centre of Gravity not Within Unit Cell: Resd. # 1 C25 H21 N3 O4
Alert level G PLAT199_ALERT_1_G Check the Reported _cell_measurement_temperature 293 K PLAT200_ALERT_1_G Check the Reported _diffrn_ambient_temperature . 293 K
0 ALERT level A = In general: serious problem 0 ALERT level B = Potentially serious problem 4 ALERT level C = Check and explain 2 ALERT level G = General alerts; check 3 ALERT type 1 CIF construction/syntax error, inconsistent or missing data 1 ALERT type 2 Indicator that the structure model may be wrong or deficient 1 ALERT type 3 Indicator that the structure quality may be low 1 ALERT type 4 Improvement, methodology, query or suggestion 0 ALERT type 5 Informative message, check

Computing details top

Data collection: CAD-4 Software (Enraf–Nonius, 1989); cell refinement: CAD-4 Software; data reduction: XCAD4 (Harms & Wocadlo, 1995); program(s) used to solve structure: SHELXS97 (Sheldrick, 1997); program(s) used to refine structure: SHELXL97 (Sheldrick, 1997); molecular graphics: SHELXTL (Siemens, 1996); software used to prepare material for publication: SHELXTL.

5,5'-Dimethoxy-3,3'-(3-nitrophenylmethanediyl)bis(1H-indole) top
Crystal data top
C25H21N3O4F(000) = 896
Mr = 427.45Dx = 1.355 Mg m3
Monoclinic, P21/cMo Kα radiation, λ = 0.71073 Å
Hall symbol: -P 2ybcCell parameters from 25 reflections
a = 10.631 (2) Åθ = 10–13°
b = 9.3570 (19) ŵ = 0.09 mm1
c = 21.072 (4) ÅT = 293 K
β = 92.09 (3)°Block, yellow
V = 2094.7 (7) Å30.40 × 0.30 × 0.10 mm
Z = 4
Data collection top
Enraf-Nonius CAD-4
diffractometer
2615 reflections with I > 2σ(I)
Radiation source: fine-focus sealed tubeRint = 0.055
Graphite monochromatorθmax = 26.0°, θmin = 1.9°
ω/2θ scansh = 013
Absorption correction: ψ scan
(North et al., 1968)
k = 011
Tmin = 0.964, Tmax = 0.991l = 2525
4324 measured reflections3 standard reflections every 200 reflections
4095 independent reflections intensity decay: none
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)] = 0.061H-atom parameters constrained
wR(F2) = 0.192 w = 1/[σ2(Fo2) + (0.08P)2 + 1.7P]
where P = (Fo2 + 2Fc2)/3
S = 1.04(Δ/σ)max = 0.001
4095 reflectionsΔρmax = 0.31 e Å3
290 parametersΔρmin = 0.26 e Å3
0 restraintsExtinction correction: SHELXL97, Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4
Primary atom site location: structure-invariant direct methodsExtinction coefficient: 0.0103 (17)
Special details top

Experimental. 1H NMR (CDCl3): δ 8.21 (br, 1H, NH), 8.07 (br, 1H), 7.88 (s, 2H, ArH), 7.68 (d, 1H), 7.44 (t, 1H), 7.26 (d, 1H), 6.84–6.86 (m, 2H), 6.76 (d, 2H), 6.66 (s, 2H), 5.88 (s, 1H, CH), 3.69 (s, 6H, CH3).

Geometry. All e.s.d.'s (except the e.s.d. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell e.s.d.'s are taken into account individually in the estimation of e.s.d.'s in distances, angles and torsion angles; correlations between e.s.d.'s in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell e.s.d.'s is used for estimating e.s.d.'s 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 > σ(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
O10.2042 (3)0.9800 (3)0.19260 (11)0.0581 (7)
N10.0634 (3)1.0416 (3)0.40810 (12)0.0471 (7)
H1A0.13501.01150.42030.056*
C10.2042 (4)0.8490 (4)0.15863 (18)0.0618 (11)
H1B0.25870.85700.12340.093*
H1C0.12030.82770.14320.093*
H1D0.23380.77370.18630.093*
O20.4339 (2)0.7603 (3)0.55390 (11)0.0534 (7)
N20.2876 (3)1.3103 (3)0.60197 (13)0.0517 (8)
H2A0.28731.36160.63580.062*
C20.1302 (3)0.9881 (3)0.24524 (14)0.0409 (8)
C30.0150 (3)0.9181 (4)0.24752 (16)0.0461 (8)
H3A0.01350.86290.21320.055*
N30.4036 (4)1.6441 (4)0.30140 (15)0.0610 (9)
O30.4973 (3)1.5730 (4)0.29508 (15)0.0851 (10)
C40.0566 (3)0.9299 (4)0.29995 (16)0.0469 (8)
H4A0.13360.88310.30180.056*
O40.3883 (3)1.7611 (3)0.27637 (17)0.0946 (11)
C50.0118 (3)1.0132 (3)0.35031 (15)0.0393 (7)
C60.0193 (3)1.1261 (3)0.44266 (15)0.0418 (8)
H6A0.00651.15840.48370.050*
C70.1220 (3)1.1560 (3)0.40896 (14)0.0347 (7)
C80.1038 (3)1.0842 (3)0.34880 (13)0.0324 (7)
C90.1761 (3)1.0711 (3)0.29492 (14)0.0357 (7)
H9A0.25331.11740.29270.043*
C100.4043 (4)0.7004 (4)0.49276 (18)0.0578 (10)
H10A0.43560.60430.49120.087*
H10B0.44280.75680.46070.087*
H10C0.31470.69990.48530.087*
C110.3952 (3)0.8993 (4)0.56382 (15)0.0416 (8)
C120.4150 (3)0.9467 (4)0.62692 (16)0.0480 (9)
H12A0.45120.88480.65690.058*
C130.3822 (3)1.0812 (4)0.64500 (15)0.0464 (8)
H13A0.39481.11170.68680.056*
C140.3292 (3)1.1711 (3)0.59877 (14)0.0395 (7)
C150.2470 (3)1.3538 (4)0.54299 (15)0.0462 (8)
H15A0.21561.44430.53340.055*
C160.2587 (3)1.2462 (3)0.49985 (14)0.0364 (7)
C170.3103 (3)1.1270 (3)0.53519 (13)0.0349 (7)
C180.3434 (3)0.9874 (3)0.51750 (15)0.0374 (7)
H18A0.33080.95570.47590.045*
C190.2342 (3)1.2467 (3)0.42912 (14)0.0341 (7)
H19A0.30801.20340.41020.041*
C200.2218 (3)1.3978 (3)0.40196 (14)0.0374 (7)
C210.1181 (3)1.4820 (4)0.41223 (17)0.0488 (9)
H21A0.05451.44610.43680.059*
C220.1056 (4)1.6185 (4)0.38711 (19)0.0597 (10)
H22A0.03441.67270.39470.072*
C230.1997 (4)1.6733 (4)0.35084 (17)0.0557 (10)
H23A0.19331.76460.33360.067*
C240.3029 (3)1.5895 (4)0.34095 (16)0.0478 (9)
C250.3166 (3)1.4527 (3)0.36583 (15)0.0418 (8)
H25A0.38811.39900.35830.050*
Atomic displacement parameters (Å2) top
U11U22U33U12U13U23
O10.0901 (19)0.0435 (14)0.0423 (14)0.0148 (13)0.0235 (13)0.0095 (11)
N10.0479 (16)0.0510 (17)0.0430 (15)0.0138 (14)0.0124 (13)0.0010 (13)
C10.089 (3)0.046 (2)0.050 (2)0.005 (2)0.009 (2)0.0128 (18)
O20.0637 (16)0.0429 (14)0.0537 (15)0.0117 (12)0.0047 (12)0.0086 (12)
N20.076 (2)0.0432 (17)0.0357 (15)0.0058 (15)0.0046 (14)0.0107 (13)
C20.057 (2)0.0315 (16)0.0345 (17)0.0001 (15)0.0075 (14)0.0043 (13)
C30.057 (2)0.0430 (19)0.0384 (17)0.0112 (17)0.0035 (15)0.0010 (15)
N30.074 (2)0.055 (2)0.0530 (19)0.0240 (18)0.0119 (17)0.0146 (16)
O30.090 (2)0.082 (2)0.085 (2)0.015 (2)0.0265 (19)0.0223 (18)
C40.0451 (19)0.0440 (19)0.052 (2)0.0113 (16)0.0002 (15)0.0034 (16)
O40.103 (3)0.072 (2)0.108 (3)0.0264 (19)0.007 (2)0.051 (2)
C50.0426 (18)0.0360 (17)0.0395 (17)0.0037 (14)0.0035 (14)0.0042 (14)
C60.0484 (19)0.0418 (19)0.0355 (16)0.0035 (15)0.0059 (14)0.0005 (14)
C70.0409 (17)0.0290 (16)0.0342 (16)0.0003 (13)0.0017 (13)0.0015 (13)
C80.0381 (16)0.0239 (15)0.0352 (16)0.0006 (12)0.0033 (12)0.0040 (12)
C90.0419 (17)0.0275 (15)0.0378 (16)0.0042 (13)0.0026 (13)0.0044 (13)
C100.063 (2)0.040 (2)0.070 (3)0.0002 (18)0.002 (2)0.0050 (19)
C110.0411 (18)0.0402 (18)0.0438 (18)0.0016 (14)0.0060 (14)0.0065 (15)
C120.046 (2)0.055 (2)0.0425 (19)0.0022 (17)0.0008 (15)0.0143 (17)
C130.055 (2)0.053 (2)0.0313 (16)0.0084 (17)0.0011 (14)0.0008 (15)
C140.0383 (17)0.0422 (18)0.0379 (17)0.0092 (15)0.0021 (13)0.0025 (14)
C150.063 (2)0.0354 (18)0.0401 (18)0.0025 (16)0.0020 (16)0.0012 (15)
C160.0375 (17)0.0366 (16)0.0350 (16)0.0060 (13)0.0003 (13)0.0000 (14)
C170.0371 (17)0.0361 (17)0.0317 (15)0.0055 (13)0.0053 (12)0.0017 (13)
C180.0417 (18)0.0377 (17)0.0330 (16)0.0054 (14)0.0050 (13)0.0006 (13)
C190.0362 (16)0.0314 (16)0.0345 (16)0.0023 (13)0.0006 (12)0.0011 (13)
C200.0482 (19)0.0310 (16)0.0324 (16)0.0041 (14)0.0053 (13)0.0001 (13)
C210.051 (2)0.042 (2)0.054 (2)0.0006 (16)0.0023 (17)0.0014 (16)
C220.073 (3)0.038 (2)0.067 (2)0.0104 (19)0.005 (2)0.0012 (18)
C230.070 (3)0.0363 (19)0.060 (2)0.0047 (19)0.0159 (19)0.0090 (17)
C240.058 (2)0.043 (2)0.0417 (18)0.0133 (17)0.0061 (16)0.0067 (16)
C250.0474 (19)0.0364 (18)0.0414 (18)0.0035 (15)0.0027 (14)0.0025 (14)
Geometric parameters (Å, º) top
O1—C21.385 (4)C10—H10A0.9600
O1—C11.420 (4)C10—H10B0.9600
N1—C61.372 (4)C10—H10C0.9600
N1—C51.379 (4)C11—C181.377 (4)
N1—H1A0.8600C11—C121.410 (5)
C1—H1B0.9600C12—C131.364 (5)
C1—H1C0.9600C12—H12A0.9300
C1—H1D0.9600C13—C141.391 (5)
O2—C111.382 (4)C13—H13A0.9300
O2—C101.429 (4)C14—C171.409 (4)
N2—C151.363 (4)C15—C161.365 (4)
N2—C141.377 (4)C15—H15A0.9300
N2—H2A0.8600C16—C171.439 (4)
C2—C91.378 (4)C16—C191.504 (4)
C2—C31.391 (5)C17—C181.406 (4)
C3—C41.369 (5)C18—H18A0.9300
C3—H3A0.9300C19—C201.529 (4)
N3—O31.209 (4)C19—H19A0.9800
N3—O41.224 (4)C20—C211.379 (4)
N3—C241.472 (5)C20—C251.384 (4)
C4—C51.387 (4)C21—C221.387 (5)
C4—H4A0.9300C21—H21A0.9300
C5—C81.399 (4)C22—C231.380 (5)
C6—C71.353 (4)C22—H22A0.9300
C6—H6A0.9300C23—C241.371 (5)
C7—C81.441 (4)C23—H23A0.9300
C7—C191.513 (4)C24—C251.388 (5)
C8—C91.399 (4)C25—H25A0.9300
C9—H9A0.9300
C2—O1—C1117.5 (3)C18—C11—C12121.4 (3)
C6—N1—C5108.2 (3)O2—C11—C12113.8 (3)
C6—N1—H1A125.9C13—C12—C11121.5 (3)
C5—N1—H1A125.9C13—C12—H12A119.2
O1—C1—H1B109.5C11—C12—H12A119.2
O1—C1—H1C109.5C12—C13—C14117.6 (3)
H1B—C1—H1C109.5C12—C13—H13A121.2
O1—C1—H1D109.5C14—C13—H13A121.2
H1B—C1—H1D109.5N2—C14—C13131.3 (3)
H1C—C1—H1D109.5N2—C14—C17106.8 (3)
C11—O2—C10116.6 (3)C13—C14—C17121.9 (3)
C15—N2—C14109.2 (3)N2—C15—C16110.7 (3)
C15—N2—H2A125.4N2—C15—H15A124.7
C14—N2—H2A125.4C16—C15—H15A124.7
C9—C2—O1116.3 (3)C15—C16—C17105.6 (3)
C9—C2—C3121.8 (3)C15—C16—C19129.9 (3)
O1—C2—C3121.9 (3)C17—C16—C19124.4 (3)
C4—C3—C2120.4 (3)C18—C17—C14119.7 (3)
C4—C3—H3A119.8C18—C17—C16132.6 (3)
C2—C3—H3A119.8C14—C17—C16107.7 (3)
O3—N3—O4122.8 (4)C11—C18—C17117.8 (3)
O3—N3—C24119.4 (3)C11—C18—H18A121.1
O4—N3—C24117.8 (4)C17—C18—H18A121.1
C3—C4—C5118.5 (3)C16—C19—C7112.5 (2)
C3—C4—H4A120.8C16—C19—C20112.6 (2)
C5—C4—H4A120.8C7—C19—C20110.9 (2)
N1—C5—C4130.3 (3)C16—C19—H19A106.8
N1—C5—C8107.9 (3)C7—C19—H19A106.8
C4—C5—C8121.8 (3)C20—C19—H19A106.8
C7—C6—N1110.8 (3)C21—C20—C25118.4 (3)
C7—C6—H6A124.6C21—C20—C19121.9 (3)
N1—C6—H6A124.6C25—C20—C19119.7 (3)
C6—C7—C8106.3 (3)C20—C21—C22122.2 (3)
C6—C7—C19127.7 (3)C20—C21—H21A118.9
C8—C7—C19126.0 (3)C22—C21—H21A118.9
C9—C8—C5119.1 (3)C23—C22—C21119.5 (4)
C9—C8—C7134.0 (3)C23—C22—H22A120.3
C5—C8—C7106.9 (3)C21—C22—H22A120.3
C2—C9—C8118.4 (3)C24—C23—C22118.2 (3)
C2—C9—H9A120.8C24—C23—H23A120.9
C8—C9—H9A120.8C22—C23—H23A120.9
O2—C10—H10A109.5C23—C24—C25122.9 (3)
O2—C10—H10B109.5C23—C24—N3119.3 (3)
H10A—C10—H10B109.5C25—C24—N3117.8 (3)
O2—C10—H10C109.5C20—C25—C24118.8 (3)
H10A—C10—H10C109.5C20—C25—H25A120.6
H10B—C10—H10C109.5C24—C25—H25A120.6
C18—C11—O2124.7 (3)
C1—O1—C2—C9145.9 (3)C13—C14—C17—C181.1 (5)
C1—O1—C2—C335.1 (5)N2—C14—C17—C161.5 (3)
C9—C2—C3—C40.1 (5)C13—C14—C17—C16177.9 (3)
O1—C2—C3—C4179.1 (3)C15—C16—C17—C18179.9 (3)
C2—C3—C4—C50.2 (5)C19—C16—C17—C183.8 (5)
C6—N1—C5—C4177.8 (3)C15—C16—C17—C141.0 (3)
C6—N1—C5—C81.2 (4)C19—C16—C17—C14175.1 (3)
C3—C4—C5—N1179.2 (3)O2—C11—C18—C17179.2 (3)
C3—C4—C5—C80.2 (5)C12—C11—C18—C170.2 (5)
C5—N1—C6—C71.1 (4)C14—C17—C18—C110.8 (4)
N1—C6—C7—C80.6 (4)C16—C17—C18—C11178.0 (3)
N1—C6—C7—C19179.2 (3)C15—C16—C19—C7112.0 (4)
N1—C5—C8—C9179.3 (3)C17—C16—C19—C772.9 (4)
C4—C5—C8—C90.2 (4)C15—C16—C19—C2014.2 (5)
N1—C5—C8—C70.9 (3)C17—C16—C19—C20160.9 (3)
C4—C5—C8—C7178.3 (3)C6—C7—C19—C1628.6 (4)
C6—C7—C8—C9178.3 (3)C8—C7—C19—C16151.7 (3)
C19—C7—C8—C91.9 (5)C6—C7—C19—C2098.5 (4)
C6—C7—C8—C50.2 (3)C8—C7—C19—C2081.2 (4)
C19—C7—C8—C5180.0 (3)C16—C19—C20—C2171.7 (4)
O1—C2—C9—C8179.1 (3)C7—C19—C20—C2155.3 (4)
C3—C2—C9—C80.1 (5)C16—C19—C20—C25108.4 (3)
C5—C8—C9—C20.1 (4)C7—C19—C20—C25124.5 (3)
C7—C8—C9—C2177.8 (3)C25—C20—C21—C220.6 (5)
C10—O2—C11—C187.4 (5)C19—C20—C21—C22179.2 (3)
C10—O2—C11—C12173.5 (3)C20—C21—C22—C230.3 (6)
C18—C11—C12—C130.9 (5)C21—C22—C23—C240.1 (5)
O2—C11—C12—C13180.0 (3)C22—C23—C24—C250.1 (5)
C11—C12—C13—C140.5 (5)C22—C23—C24—N3178.8 (3)
C15—N2—C14—C13177.9 (3)O3—N3—C24—C23176.6 (3)
C15—N2—C14—C171.4 (4)O4—N3—C24—C233.2 (5)
C12—C13—C14—N2179.7 (3)O3—N3—C24—C254.5 (5)
C12—C13—C14—C170.5 (5)O4—N3—C24—C25175.8 (3)
C14—N2—C15—C160.8 (4)C21—C20—C25—C240.6 (5)
N2—C15—C16—C170.2 (4)C19—C20—C25—C24179.2 (3)
N2—C15—C16—C19175.6 (3)C23—C24—C25—C200.4 (5)
N2—C14—C17—C18179.5 (3)N3—C24—C25—C20178.6 (3)
Hydrogen-bond geometry (Å, º) top
D—H···AD—HH···AD···AD—H···A
N2—H2A···O1i0.862.122.900 (4)151
N1—H1A···Cg1ii0.862.463.277 (2)160
Symmetry codes: (i) x, y+5/2, z+1/2; (ii) x, y+2, z+1.
 

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