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The title compound, C50H44, is a derivative of rubrene where tert-butyl side groups are added to two of the pendant aromatic rings. Two polymorphs of this derivative, the title compound (form A) and form B, have been identified. The mol­ecule of form A displays a strongly twisted naphthacene backbone. The in-plane arrangement differs from the classical herringbone structure, resembling a slip–stack structure type with the backbones separated by a minimum 7.0 Å in the direction of possible π-stacking.

Supporting information

cif

Crystallographic Information File (CIF) https://doi.org/10.1107/S1600536807022490/hb2402sup1.cif
Contains datablocks I, global

hkl

Structure factor file (CIF format) https://doi.org/10.1107/S1600536807022490/hb2402Isup2.hkl
Contains datablock I

CCDC reference: 651431

Key indicators

  • Single-crystal X-ray study
  • T = 292 K
  • Mean [sigma](C-C) = 0.007 Å
  • R factor = 0.098
  • wR factor = 0.169
  • Data-to-parameter ratio = 12.4

checkCIF/PLATON results

No syntax errors found



Alert level A PLAT220_ALERT_2_A Large Non-Solvent C Ueq(max)/Ueq(min) ... 6.23 Ratio
Author Response: The atom diaplacement parameters of the C atoms in the tert-butyl group is larger than usual, suggesting positional disorder.
PLAT242_ALERT_2_A Check Low       Ueq as Compared to Neighbors for        C36
Author Response: The atom diaplacement parameters of C36 and C46 is small as compared with extremely large atom displacement parameters of the C atoms in the tert-butyl groups.
PLAT242_ALERT_2_A Check Low       Ueq as Compared to Neighbors for        C46
Author Response: The atom diaplacement parameters of C36 and C46 is small as compared with extremely large atom displacement parameters of the C atoms in the tert-butyl groups.

Alert level B PLAT213_ALERT_2_B Atom C37 has ADP max/min Ratio ............. 4.20 prola PLAT222_ALERT_3_B Large Non-Solvent H Ueq(max)/Ueq(min) ... 4.25 Ratio
Author Response: The atom diaplacement parameters of the H atoms in the tert-butyl group is larger than usual, suggesting positional disorder.

Alert level C PLAT213_ALERT_2_C Atom C39 has ADP max/min Ratio ............. 3.70 prola PLAT213_ALERT_2_C Atom C47 has ADP max/min Ratio ............. 3.20 prola PLAT245_ALERT_2_C U(iso) H23 Smaller than U(eq) C23 by ... 0.02 AngSq PLAT340_ALERT_3_C Low Bond Precision on C-C Bonds (x 1000) Ang ... 7
3 ALERT level A = In general: serious problem 2 ALERT level B = Potentially serious problem 4 ALERT level C = Check and explain 0 ALERT level G = General alerts; check 0 ALERT type 1 CIF construction/syntax error, inconsistent or missing data 7 ALERT type 2 Indicator that the structure model may be wrong or deficient 2 ALERT type 3 Indicator that the structure quality may be low 0 ALERT type 4 Improvement, methodology, query or suggestion 0 ALERT type 5 Informative message, check

Comment top

The electronic properties of rubrene and rubrene derivatives are of great interest owing to fundamental questions on charge transport and associated applications (Sundar et al., 2004; Goldmann et al., 2004). The electric transport properties of the two polymorphs of the title compound are distinctly different: in polymorph B, the in-plane hole is as high as 12 cm2/Vs, on par with rubrene, which is known to be the organic semiconductor with the highest hole mobility. In contrast, the title compound, (I), polymorph A is highly resistive and does not show any field-induced electrical transport (Haas et al., 2007, Strassen et al., 2007).

The crystal structure of (I) is monoclinic, with space group P21/c, with four molecules in the unit cell (Fig. 1). The molecules form a layered structure, similar to linear acenes such as pentacene (Mattheus et al., 2001) with the naphthacene backbone standing upright (see Fig. 2). A particular characteristic of polymorph A is the twist of the naphthalene backbone by 43° (defined as the torsion angle between the two terminal C—C bonds [C1—C2 and C17—C18] at the ends of the backbone).

Polymorph B exclusively grows in the form of ultrathin platelets (Haas et al., 2007). From d-spacing measurements on these samples, a structure closely related to the one found for a constitutional isomer, 5,12-bis-(4-tert-butyl-phenyl)-6,11-diphenyl-naphthacene (Schuck et al., 2007) was assumed for polymorph B. A complete structure determination of form B, however, has not been feasible so far due to the crystal morphology.

Related literature top

For related literature, see: Goldmann et al. (2004); Haas et al. (2007); Kloc et al. (1997); Kopranenkov & Luk'yanets (1972); Mattheus et al. (2001); Schuck et al. (2007); Sundar et al. (2004).

For related literature, see: Laudize et al. (1998); Strassen (2007).

Experimental top

The title compound was synthesized according to the method of Kopranenkov & Luk'yanets (1972). Physical vapour transport (Kloc et al., 1997, Laudize et al., 1998) at 533 K, using high purity argon as the transport gas made single crystals of both polymorphs at the same time. The morphology (plates typically 0.1–0.2 µm thick), orange colour and transparency of both forms are basically the same. The two forms can only be distinguished by measuring their d-spacings perpendicular to the crystal platelets (form A: d100 = 23.4 Å and form B d = 35.1 Å) (Haas et al., 2007).

Only at a slightly higher temperature (and with longer growth time), a few thicker crystals of form A could be grown for full structural characterization with XRD.

Refinement top

The H atoms in the aromatic units were located in difference maps and their positions were freely refined with Uiso(H) = 1.2Ueq(carrier). The H atoms of the methyl groups were positioned geometrically (C—H = 0.96 Å) and were refined as riding on the parent C atoms with Uiso(H) = 1.5Ueq(carrier).

Structure description top

The electronic properties of rubrene and rubrene derivatives are of great interest owing to fundamental questions on charge transport and associated applications (Sundar et al., 2004; Goldmann et al., 2004). The electric transport properties of the two polymorphs of the title compound are distinctly different: in polymorph B, the in-plane hole is as high as 12 cm2/Vs, on par with rubrene, which is known to be the organic semiconductor with the highest hole mobility. In contrast, the title compound, (I), polymorph A is highly resistive and does not show any field-induced electrical transport (Haas et al., 2007, Strassen et al., 2007).

The crystal structure of (I) is monoclinic, with space group P21/c, with four molecules in the unit cell (Fig. 1). The molecules form a layered structure, similar to linear acenes such as pentacene (Mattheus et al., 2001) with the naphthacene backbone standing upright (see Fig. 2). A particular characteristic of polymorph A is the twist of the naphthalene backbone by 43° (defined as the torsion angle between the two terminal C—C bonds [C1—C2 and C17—C18] at the ends of the backbone).

Polymorph B exclusively grows in the form of ultrathin platelets (Haas et al., 2007). From d-spacing measurements on these samples, a structure closely related to the one found for a constitutional isomer, 5,12-bis-(4-tert-butyl-phenyl)-6,11-diphenyl-naphthacene (Schuck et al., 2007) was assumed for polymorph B. A complete structure determination of form B, however, has not been feasible so far due to the crystal morphology.

For related literature, see: Goldmann et al. (2004); Haas et al. (2007); Kloc et al. (1997); Kopranenkov & Luk'yanets (1972); Mattheus et al. (2001); Schuck et al. (2007); Sundar et al. (2004).

For related literature, see: Laudize et al. (1998); Strassen (2007).

Computing details top

Data collection: SMART (Bruker, 2000); cell refinement: SAINT (Bruker, 2000); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 1997); program(s) used to refine structure: SHELXL97 (Sheldrick, 1997); molecular graphics: ORTEP-3 (Farrugia, 1997); software used to prepare material for publication: WinGX (Farrugia, 1999).

Figures top
[Figure 1] Fig. 1. The molecular structure of (I), showing the atom numbering scheme and displacement ellipsoids at the 50% probability level (arbitrary spheres for the H atoms).
[Figure 2] Fig. 2. The crystal packing for (I), viewed (a) down the a axis and (b) viewed down the b axis.
5,11-Bis(4-tert-butyl-phenyl)-6,12-diphenylnaphthacene top
Crystal data top
C50H44F(000) = 1376
Mr = 644.85Dx = 1.141 Mg m3
Monoclinic, P21/cMo Kα radiation, λ = 0.71073 Å
Hall symbol: -P 2ybcCell parameters from 3136 reflections
a = 23.527 (3) Åθ = 3.0–25.0°
b = 9.0277 (10) ŵ = 0.06 mm1
c = 17.764 (2) ÅT = 292 K
β = 95.928 (4)°Plate, translucent orange
V = 3752.8 (8) Å30.36 × 0.16 × 0.04 mm
Z = 4
Data collection top
Brucker SMART CCD
diffractometer
6626 independent reflections
Radiation source: fine-focus sealed tube3478 reflections with I > 2σ(I)
Graphite monochromatorRint = 0.100
φ and ω scansθmax = 25.0°, θmin = 0.9°
Absorption correction: multi-scan
(SADABS; Sheldrick, 1996; Blessing, 1995)
h = 2727
Tmin = 0.990, Tmax = 0.997k = 1010
31129 measured reflectionsl = 2121
Refinement top
Refinement on F2Secondary atom site location: difference Fourier map
Least-squares matrix: fullHydrogen site location: difmap and geom
R[F2 > 2σ(F2)] = 0.098H atoms treated by a mixture of independent and constrained refinement
wR(F2) = 0.169 w = 1/[σ2(Fo2) + (0.0241P)2 + 4.9951P]
where P = (Fo2 + 2Fc2)/3
S = 1.11(Δ/σ)max = 0.004
6626 reflectionsΔρmax = 0.29 e Å3
536 parametersΔρmin = 0.21 e Å3
0 restraintsExtinction correction: SHELXL97, Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4
Primary atom site location: structure-invariant direct methodsExtinction coefficient: 0.0020 (3)
Crystal data top
C50H44V = 3752.8 (8) Å3
Mr = 644.85Z = 4
Monoclinic, P21/cMo Kα radiation
a = 23.527 (3) ŵ = 0.06 mm1
b = 9.0277 (10) ÅT = 292 K
c = 17.764 (2) Å0.36 × 0.16 × 0.04 mm
β = 95.928 (4)°
Data collection top
Brucker SMART CCD
diffractometer
6626 independent reflections
Absorption correction: multi-scan
(SADABS; Sheldrick, 1996; Blessing, 1995)
3478 reflections with I > 2σ(I)
Tmin = 0.990, Tmax = 0.997Rint = 0.100
31129 measured reflections
Refinement top
R[F2 > 2σ(F2)] = 0.0980 restraints
wR(F2) = 0.169H atoms treated by a mixture of independent and constrained refinement
S = 1.11Δρmax = 0.29 e Å3
6626 reflectionsΔρmin = 0.21 e Å3
536 parameters
Special details top

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
C10.4082 (2)0.7231 (5)0.3755 (3)0.0571 (13)
C20.43973 (19)0.6785 (5)0.4434 (3)0.0544 (13)
C30.35092 (18)0.7072 (5)0.3654 (2)0.0444 (11)
C40.41355 (18)0.6099 (5)0.4982 (3)0.0481 (12)
C50.32005 (16)0.6423 (4)0.4231 (2)0.0388 (10)
C60.35296 (15)0.5814 (4)0.4884 (2)0.0352 (10)
C70.26002 (16)0.6412 (4)0.4184 (2)0.0378 (10)
C80.32605 (15)0.4935 (4)0.5393 (2)0.0356 (10)
C90.23227 (15)0.5692 (4)0.4762 (2)0.0350 (10)
C100.26556 (15)0.4713 (4)0.5276 (2)0.0357 (10)
C110.17319 (15)0.5862 (4)0.4856 (2)0.0353 (10)
C120.23732 (16)0.3584 (4)0.5653 (2)0.0370 (10)
C130.14684 (15)0.4909 (4)0.5329 (2)0.0360 (10)
C140.17806 (16)0.3674 (4)0.5681 (2)0.0387 (10)
C150.08776 (17)0.5078 (5)0.5463 (2)0.0464 (11)
C160.14702 (19)0.2603 (5)0.6065 (3)0.0512 (12)
C170.0615 (2)0.4075 (6)0.5867 (3)0.0550 (13)
C180.0911 (2)0.2800 (6)0.6153 (3)0.0604 (14)
C200.22674 (17)0.6982 (5)0.3482 (2)0.0483 (11)
C210.2261 (2)0.8465 (6)0.3280 (3)0.0723 (16)
C220.1970 (3)0.8925 (10)0.2595 (5)0.106 (3)
C230.1690 (3)0.7895 (13)0.2123 (4)0.120 (4)
C240.1700 (3)0.6451 (11)0.2308 (3)0.105 (3)
C250.1988 (2)0.5961 (7)0.2987 (3)0.0669 (15)
C300.35873 (15)0.4391 (4)0.6107 (2)0.0375 (10)
C310.40131 (16)0.3323 (5)0.6126 (2)0.0444 (11)
C320.42905 (18)0.2851 (5)0.6807 (3)0.0487 (12)
C330.41595 (18)0.3416 (5)0.7495 (2)0.0488 (11)
C340.3746 (2)0.4500 (5)0.7468 (2)0.0519 (12)
C350.34595 (19)0.4986 (5)0.6788 (2)0.0486 (12)
C360.4456 (2)0.2853 (6)0.8254 (3)0.0669 (14)
C370.4903 (4)0.3883 (8)0.8554 (4)0.202 (5)
H37A0.50540.35710.90520.303*
H37B0.47450.48600.85800.303*
H37C0.52040.38930.82280.303*
C380.4708 (3)0.1331 (7)0.8175 (3)0.146 (3)
H38A0.50470.14070.79200.219*
H38B0.44350.07100.78860.219*
H38C0.48020.09080.86670.219*
C390.4024 (4)0.2652 (12)0.8809 (4)0.218 (6)
H39A0.41840.20460.92220.327*
H39B0.36890.21800.85630.327*
H39C0.39220.36010.89990.327*
C400.14101 (16)0.7183 (4)0.4525 (2)0.0371 (10)
C410.15368 (19)0.8579 (5)0.4817 (2)0.0491 (12)
C420.1243 (2)0.9821 (5)0.4531 (3)0.0579 (13)
C430.08086 (18)0.9718 (5)0.3945 (2)0.0446 (11)
C440.06779 (18)0.8326 (5)0.3667 (2)0.0490 (12)
C450.09662 (17)0.7067 (5)0.3952 (2)0.0437 (11)
C460.0491 (2)1.1098 (5)0.3632 (3)0.0653 (14)
C470.0073 (3)1.1571 (8)0.4184 (4)0.166 (4)
H47A0.02821.19120.46450.249*
H47B0.01611.07430.42920.249*
H47C0.01641.23570.39650.249*
C480.0899 (3)1.2343 (6)0.3525 (4)0.147 (3)
H48A0.10741.26660.40090.220*
H48B0.06951.31540.32730.220*
H48C0.11901.20050.32230.220*
C490.0140 (3)1.0800 (6)0.2874 (3)0.110 (2)
H49A0.00431.16980.26900.165*
H49B0.01451.00630.29410.165*
H49C0.03881.04500.25150.165*
C500.26843 (17)0.2211 (5)0.5919 (3)0.0473 (11)
C510.2768 (2)0.1763 (6)0.6668 (3)0.0656 (15)
C520.3053 (2)0.0437 (8)0.6856 (4)0.089 (2)
C530.3249 (3)0.0439 (7)0.6305 (6)0.103 (3)
C540.3169 (3)0.0008 (7)0.5560 (5)0.092 (2)
C550.2890 (2)0.1303 (5)0.5368 (3)0.0639 (14)
H10.4291 (19)0.759 (5)0.335 (2)0.077*
H20.4827 (19)0.693 (5)0.454 (2)0.077*
H30.3284 (18)0.744 (5)0.317 (2)0.077*
H40.4347 (18)0.574 (5)0.547 (2)0.077*
H150.0685 (18)0.600 (5)0.524 (2)0.077*
H160.1680 (18)0.174 (5)0.630 (2)0.077*
H170.0193 (19)0.428 (5)0.596 (2)0.077*
H180.0713 (19)0.218 (5)0.644 (2)0.077*
H210.245 (2)0.918 (6)0.366 (3)0.096*
H220.197 (2)0.993 (6)0.249 (3)0.096*
H230.148 (2)0.818 (6)0.163 (3)0.096*
H240.152 (2)0.564 (6)0.199 (3)0.096*
H250.201 (2)0.488 (6)0.316 (3)0.096*
H310.4121 (18)0.287 (5)0.565 (2)0.077*
H320.4602 (19)0.215 (5)0.678 (2)0.077*
H340.3639 (18)0.496 (5)0.793 (2)0.077*
H350.3160 (18)0.572 (5)0.681 (2)0.077*
H410.1844 (18)0.866 (5)0.523 (2)0.077*
H420.1385 (18)1.075 (5)0.476 (2)0.077*
H440.0400 (18)0.817 (5)0.325 (2)0.077*
H450.0856 (18)0.607 (5)0.373 (2)0.077*
H510.263 (2)0.241 (6)0.706 (3)0.096*
H520.310 (2)0.018 (6)0.736 (3)0.096*
H530.346 (2)0.140 (6)0.646 (3)0.096*
H540.329 (2)0.069 (6)0.514 (3)0.096*
H550.281 (2)0.163 (5)0.480 (3)0.096*
Atomic displacement parameters (Å2) top
U11U22U33U12U13U23
C10.047 (3)0.065 (3)0.061 (3)0.008 (3)0.018 (2)0.010 (3)
C20.034 (3)0.070 (3)0.058 (3)0.011 (3)0.000 (2)0.009 (3)
C30.043 (3)0.045 (3)0.046 (3)0.002 (2)0.009 (2)0.008 (2)
C40.039 (3)0.056 (3)0.048 (3)0.004 (2)0.003 (2)0.004 (2)
C50.039 (2)0.034 (2)0.043 (2)0.002 (2)0.0004 (19)0.0016 (19)
C60.028 (2)0.035 (2)0.042 (2)0.0030 (19)0.0011 (18)0.0019 (19)
C70.038 (2)0.038 (2)0.037 (2)0.003 (2)0.0016 (18)0.0045 (19)
C80.033 (2)0.034 (2)0.039 (2)0.0025 (19)0.0022 (18)0.0026 (19)
C90.032 (2)0.036 (2)0.036 (2)0.0012 (19)0.0014 (18)0.0010 (19)
C100.031 (2)0.040 (2)0.036 (2)0.0034 (19)0.0023 (17)0.0007 (19)
C110.031 (2)0.038 (2)0.035 (2)0.0015 (19)0.0029 (18)0.0006 (19)
C120.035 (2)0.040 (3)0.037 (2)0.004 (2)0.0057 (18)0.0036 (19)
C130.030 (2)0.045 (3)0.032 (2)0.001 (2)0.0005 (17)0.005 (2)
C140.039 (2)0.039 (3)0.039 (2)0.004 (2)0.0082 (19)0.002 (2)
C150.038 (3)0.057 (3)0.045 (3)0.001 (2)0.006 (2)0.001 (2)
C160.043 (3)0.056 (3)0.055 (3)0.005 (2)0.004 (2)0.008 (2)
C170.039 (3)0.068 (3)0.059 (3)0.000 (3)0.013 (2)0.004 (3)
C180.049 (3)0.072 (4)0.063 (3)0.011 (3)0.019 (2)0.011 (3)
C200.041 (3)0.065 (3)0.041 (3)0.010 (2)0.010 (2)0.012 (2)
C210.059 (3)0.081 (4)0.078 (4)0.012 (3)0.010 (3)0.041 (3)
C220.079 (5)0.127 (7)0.115 (6)0.033 (5)0.028 (4)0.076 (6)
C230.094 (6)0.208 (11)0.059 (5)0.061 (7)0.009 (4)0.045 (6)
C240.088 (5)0.168 (8)0.053 (4)0.050 (5)0.019 (3)0.023 (4)
C250.056 (3)0.097 (4)0.046 (3)0.023 (3)0.003 (2)0.010 (3)
C300.027 (2)0.043 (3)0.043 (3)0.001 (2)0.0014 (18)0.004 (2)
C310.031 (2)0.059 (3)0.043 (3)0.009 (2)0.002 (2)0.004 (2)
C320.037 (3)0.056 (3)0.053 (3)0.010 (2)0.004 (2)0.011 (2)
C330.051 (3)0.048 (3)0.047 (3)0.001 (2)0.000 (2)0.013 (2)
C340.065 (3)0.050 (3)0.040 (3)0.008 (3)0.006 (2)0.002 (2)
C350.053 (3)0.046 (3)0.046 (3)0.010 (2)0.002 (2)0.001 (2)
C360.085 (4)0.061 (3)0.051 (3)0.013 (3)0.010 (3)0.016 (3)
C370.268 (10)0.137 (7)0.160 (7)0.100 (7)0.174 (8)0.081 (6)
C380.226 (9)0.095 (5)0.100 (5)0.050 (6)0.066 (5)0.025 (4)
C390.200 (9)0.369 (15)0.095 (6)0.109 (10)0.062 (6)0.141 (8)
C400.032 (2)0.042 (3)0.037 (2)0.003 (2)0.0034 (18)0.005 (2)
C410.051 (3)0.050 (3)0.043 (3)0.005 (2)0.012 (2)0.005 (2)
C420.077 (3)0.038 (3)0.055 (3)0.002 (3)0.015 (3)0.010 (2)
C430.050 (3)0.044 (3)0.040 (2)0.013 (2)0.003 (2)0.001 (2)
C440.043 (3)0.050 (3)0.051 (3)0.005 (2)0.009 (2)0.004 (2)
C450.037 (2)0.040 (3)0.053 (3)0.005 (2)0.003 (2)0.003 (2)
C460.086 (4)0.047 (3)0.060 (3)0.024 (3)0.005 (3)0.005 (2)
C470.227 (9)0.165 (8)0.112 (6)0.157 (7)0.044 (6)0.026 (5)
C480.164 (7)0.055 (4)0.205 (8)0.021 (5)0.060 (6)0.053 (5)
C490.152 (6)0.084 (4)0.085 (4)0.042 (4)0.029 (4)0.026 (4)
C500.034 (2)0.041 (3)0.067 (3)0.002 (2)0.003 (2)0.011 (2)
C510.047 (3)0.067 (4)0.082 (4)0.001 (3)0.005 (3)0.035 (3)
C520.057 (4)0.088 (5)0.118 (6)0.002 (3)0.001 (4)0.062 (5)
C530.075 (5)0.049 (4)0.184 (9)0.016 (3)0.005 (5)0.035 (5)
C540.081 (4)0.046 (4)0.149 (7)0.012 (3)0.003 (4)0.014 (4)
C550.056 (3)0.044 (3)0.091 (4)0.005 (3)0.003 (3)0.008 (3)
Geometric parameters (Å, º) top
C1—C31.348 (6)C33—C361.539 (6)
C1—C21.408 (6)C34—C351.392 (6)
C1—H10.97 (4)C34—H340.98 (4)
C2—C41.355 (6)C35—H350.97 (4)
C2—H21.02 (4)C36—C371.464 (7)
C3—C51.439 (5)C36—C391.498 (8)
C3—H31.02 (4)C36—C381.508 (7)
C4—C61.441 (5)C37—H37A0.9600
C4—H41.01 (4)C37—H37B0.9600
C5—C71.406 (5)C37—H37C0.9600
C5—C61.437 (5)C38—H38A0.9600
C6—C81.402 (5)C38—H38B0.9600
C7—C91.428 (5)C38—H38C0.9600
C7—C201.495 (5)C39—H39A0.9600
C8—C101.431 (5)C39—H39B0.9600
C8—C301.498 (5)C39—H39C0.9600
C9—C111.425 (5)C40—C451.384 (5)
C9—C101.443 (5)C40—C411.384 (5)
C10—C121.422 (5)C41—C421.386 (6)
C11—C131.392 (5)C41—H410.98 (4)
C11—C401.499 (5)C42—C431.385 (6)
C12—C141.402 (5)C42—H420.98 (4)
C12—C501.491 (5)C43—C441.373 (6)
C13—C141.442 (5)C43—C461.528 (6)
C13—C151.442 (5)C44—C451.392 (6)
C14—C161.427 (6)C44—H440.95 (4)
C15—C171.346 (6)C45—H451.00 (4)
C15—H151.01 (4)C46—C481.504 (7)
C16—C181.353 (6)C46—C471.519 (7)
C16—H160.99 (4)C46—C491.528 (7)
C17—C181.412 (7)C47—H47A0.9600
C17—H171.04 (4)C47—H47B0.9600
C18—H180.92 (4)C47—H47C0.9600
C20—C211.385 (6)C48—H48A0.9600
C20—C251.391 (6)C48—H48B0.9600
C21—C221.397 (8)C48—H48C0.9600
C21—H211.00 (5)C49—H49A0.9600
C22—C231.373 (11)C49—H49B0.9600
C22—H220.93 (5)C49—H49C0.9600
C23—C241.344 (11)C50—C511.386 (6)
C23—H231.00 (5)C50—C551.401 (6)
C24—C251.392 (8)C51—C521.395 (8)
C24—H241.00 (5)C51—H511.00 (5)
C25—H251.03 (5)C52—C531.374 (9)
C30—C351.384 (5)C52—H520.92 (5)
C30—C311.388 (5)C53—C541.373 (9)
C31—C321.381 (5)C53—H531.02 (5)
C31—H310.99 (4)C54—C551.379 (7)
C32—C331.387 (6)C54—H541.04 (5)
C32—H320.97 (4)C55—H551.06 (5)
C33—C341.378 (6)
C3—C1—C2121.0 (4)C30—C35—C34120.5 (4)
C3—C1—H1121 (3)C30—C35—H35121 (3)
C2—C1—H1118 (3)C34—C35—H35118 (3)
C4—C2—C1120.5 (4)C37—C36—C39110.3 (7)
C4—C2—H2117 (2)C37—C36—C38109.7 (6)
C1—C2—H2123 (2)C39—C36—C38104.5 (6)
C1—C3—C5121.3 (4)C37—C36—C33110.7 (4)
C1—C3—H3120 (2)C39—C36—C33109.9 (5)
C5—C3—H3118 (2)C38—C36—C33111.5 (4)
C2—C4—C6120.8 (4)C36—C37—H37A109.5
C2—C4—H4123 (2)C36—C37—H37B109.5
C6—C4—H4116 (2)H37A—C37—H37B109.5
C7—C5—C6119.9 (4)C36—C37—H37C109.5
C7—C5—C3122.6 (4)H37A—C37—H37C109.5
C6—C5—C3117.5 (4)H37B—C37—H37C109.5
C8—C6—C5119.7 (3)C36—C38—H38A109.5
C8—C6—C4122.0 (4)C36—C38—H38B109.5
C5—C6—C4118.2 (4)H38A—C38—H38B109.5
C5—C7—C9119.5 (3)C36—C38—H38C109.5
C5—C7—C20118.8 (4)H38A—C38—H38C109.5
C9—C7—C20121.2 (3)H38B—C38—H38C109.5
C6—C8—C10119.6 (3)C36—C39—H39A109.5
C6—C8—C30120.4 (3)C36—C39—H39B109.5
C10—C8—C30119.5 (3)H39A—C39—H39B109.5
C11—C9—C7124.0 (3)C36—C39—H39C109.5
C11—C9—C10117.7 (3)H39A—C39—H39C109.5
C7—C9—C10118.4 (3)H39B—C39—H39C109.5
C12—C10—C8122.6 (3)C45—C40—C41117.5 (4)
C12—C10—C9119.2 (3)C45—C40—C11122.7 (4)
C8—C10—C9118.2 (3)C41—C40—C11119.8 (3)
C13—C11—C9120.3 (3)C40—C41—C42121.3 (4)
C13—C11—C40119.3 (3)C40—C41—H41118 (3)
C9—C11—C40119.9 (3)C42—C41—H41121 (3)
C14—C12—C10119.3 (3)C43—C42—C41121.5 (4)
C14—C12—C50119.6 (4)C43—C42—H42124 (3)
C10—C12—C50120.5 (3)C41—C42—H42114 (3)
C11—C13—C14120.1 (3)C44—C43—C42116.9 (4)
C11—C13—C15122.1 (4)C44—C43—C46122.1 (4)
C14—C13—C15117.8 (4)C42—C43—C46121.0 (4)
C12—C14—C16122.5 (4)C43—C44—C45122.3 (4)
C12—C14—C13119.6 (4)C43—C44—H44122 (3)
C16—C14—C13117.9 (4)C45—C44—H44116 (3)
C17—C15—C13121.4 (4)C40—C45—C44120.5 (4)
C17—C15—H15123 (3)C40—C45—H45120 (3)
C13—C15—H15115 (3)C44—C45—H45120 (3)
C18—C16—C14121.2 (4)C48—C46—C47109.6 (6)
C18—C16—H16120 (3)C48—C46—C49108.3 (5)
C14—C16—H16119 (3)C47—C46—C49107.0 (5)
C15—C17—C18120.2 (4)C48—C46—C43111.1 (4)
C15—C17—H17118 (2)C47—C46—C43108.6 (4)
C18—C17—H17122 (2)C49—C46—C43112.1 (4)
C16—C18—C17121.0 (5)C46—C47—H47A109.5
C16—C18—H18123 (3)C46—C47—H47B109.5
C17—C18—H18116 (3)H47A—C47—H47B109.5
C21—C20—C25119.0 (5)C46—C47—H47C109.5
C21—C20—C7122.6 (4)H47A—C47—H47C109.5
C25—C20—C7118.2 (4)H47B—C47—H47C109.5
C20—C21—C22120.2 (6)C46—C48—H48A109.5
C20—C21—H21117 (3)C46—C48—H48B109.5
C22—C21—H21123 (3)H48A—C48—H48B109.5
C23—C22—C21119.4 (7)C46—C48—H48C109.5
C23—C22—H22123 (4)H48A—C48—H48C109.5
C21—C22—H22118 (4)H48B—C48—H48C109.5
C24—C23—C22120.8 (7)C46—C49—H49A109.5
C24—C23—H23118 (3)C46—C49—H49B109.5
C22—C23—H23122 (3)H49A—C49—H49B109.5
C23—C24—C25120.9 (7)C46—C49—H49C109.5
C23—C24—H24126 (3)H49A—C49—H49C109.5
C25—C24—H24113 (3)H49B—C49—H49C109.5
C20—C25—C24119.5 (6)C51—C50—C55118.4 (5)
C20—C25—H25116 (3)C51—C50—C12124.2 (4)
C24—C25—H25124 (3)C55—C50—C12117.3 (4)
C35—C30—C31118.0 (4)C50—C51—C52119.8 (6)
C35—C30—C8118.3 (3)C50—C51—H51119 (3)
C31—C30—C8123.6 (4)C52—C51—H51121 (3)
C32—C31—C30120.7 (4)C53—C52—C51120.8 (6)
C32—C31—H31118 (3)C53—C52—H52123 (3)
C30—C31—H31121 (3)C51—C52—H52117 (4)
C31—C32—C33122.0 (4)C52—C53—C54120.0 (6)
C31—C32—H32117 (3)C52—C53—H53119 (3)
C33—C32—H32121 (3)C54—C53—H53121 (3)
C34—C33—C32116.9 (4)C53—C54—C55119.8 (6)
C34—C33—C36121.2 (4)C53—C54—H54121 (3)
C32—C33—C36121.9 (4)C55—C54—H54119 (3)
C33—C34—C35122.0 (4)C54—C55—C50121.2 (6)
C33—C34—H34121 (3)C54—C55—H55120 (3)
C35—C34—H34117 (3)C50—C55—H55118 (3)

Experimental details

Crystal data
Chemical formulaC50H44
Mr644.85
Crystal system, space groupMonoclinic, P21/c
Temperature (K)292
a, b, c (Å)23.527 (3), 9.0277 (10), 17.764 (2)
β (°) 95.928 (4)
V3)3752.8 (8)
Z4
Radiation typeMo Kα
µ (mm1)0.06
Crystal size (mm)0.36 × 0.16 × 0.04
Data collection
DiffractometerBrucker SMART CCD
Absorption correctionMulti-scan
(SADABS; Sheldrick, 1996; Blessing, 1995)
Tmin, Tmax0.990, 0.997
No. of measured, independent and
observed [I > 2σ(I)] reflections
31129, 6626, 3478
Rint0.100
(sin θ/λ)max1)0.596
Refinement
R[F2 > 2σ(F2)], wR(F2), S 0.098, 0.169, 1.11
No. of reflections6626
No. of parameters536
H-atom treatmentH atoms treated by a mixture of independent and constrained refinement
Δρmax, Δρmin (e Å3)0.29, 0.21

Computer programs: SMART (Bruker, 2000), SAINT (Bruker, 2000), SAINT, SHELXS97 (Sheldrick, 1997), SHELXL97 (Sheldrick, 1997), ORTEP-3 (Farrugia, 1997), WinGX (Farrugia, 1999).

 

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