organic compounds
2-p-Tolyl-1-p-tolylmethyl-1H-benzimidazole
aBiology and Chemistry Department, Nanchang University College of Science and Technology, Nanchang 330029, People's Republic of China
*Correspondence e-mail: liuting_ncu@yahoo.cn
The 22H20N2, contains two crystallographically independent molecules in which the planar benzimidazole ring systems are oriented with respect to the adjacent tolyl rings at dihedral angles of 47.08 (8)/76.85 (8) and 39.52 (9)/87.49 (9)°, while the dihedral angles between the tolyl rings are 73.99 (3) and 81.51 (9)°. In the pairs of intermolecular C—H⋯N interactions link one of the asymmetric molecules into centrosymmetric dimers through R22(8) ring motifs.
of the title compound, CRelated literature
For general background to the biological and pharmaceutical activities of benzimidazole derivatives, see: Matsuno et al. (2000). Garuti et al. (1999). For related structures, see: Tlahuext et al. (2007); Chen & Ruan (2007). For bond-length data, see: Allen et al. (1987). For ring-motifs, see: Bernstein et al. (1995).
Experimental
Crystal data
|
Refinement
|
Data collection: CrystalClear (Rigaku, 2005); cell CrystalClear; data reduction: CrystalClear; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXL97.
Supporting information
10.1107/S1600536809021175/hk2704sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536809021175/hk2704Isup2.hkl
For the preparation of the title compound, 4-methylbenzaldehyde(0.96 g, 8 mmol) was added to a solution of o-phenylenediamine (0.432 g, 4 mmol) in ethanol (20 ml). The mixture was refluxed with stirring for 4 h. When cooled to room temperature, the resultant solution was filtered and allowed to evaporate slowly. Crystals suitable for X-ray analysis were obtained after several weeks.
H atoms were positioned geometrically, with C-H = 0.93, 0.97 and 0.96 Å for aromatic, methylene and methyl H, respectively, and constrained to ride on their parent atoms, with Uiso(H) = 1.2Ueq(C).
Data collection: CrystalClear (Rigaku, 2005); cell
CrystalClear (Rigaku, 2005); data reduction: CrystalClear (Rigaku, 2005); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008).C22H20N2 | Z = 4 |
Mr = 312.40 | F(000) = 664 |
Triclinic, P1 | Dx = 1.199 Mg m−3 |
Hall symbol: -P 1 | Mo Kα radiation, λ = 0.71073 Å |
a = 9.7046 (19) Å | Cell parameters from 2562 reflections |
b = 10.457 (2) Å | θ = 3.0–27.5° |
c = 17.825 (4) Å | µ = 0.07 mm−1 |
α = 84.12 (3)° | T = 294 K |
β = 81.44 (3)° | Prism, yellow |
γ = 75.87 (3)° | 0.20 × 0.18 × 0.15 mm |
V = 1730.4 (7) Å3 |
Rigaku SCXmini diffractometer | 6773 independent reflections |
Radiation source: fine-focus sealed tube | 3812 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.057 |
Detector resolution: 13.6612 pixels mm-1 | θmax = 26.0°, θmin = 3.0° |
ω scans | h = −11→11 |
Absorption correction: multi-scan (CrystalClear; Rigaku, 2005) | k = −12→12 |
Tmin = 0.984, Tmax = 0.988 | l = −21→21 |
16221 measured reflections |
Refinement on F2 | Secondary atom site location: difference Fourier map |
Least-squares matrix: full | Hydrogen site location: inferred from neighbouring sites |
R[F2 > 2σ(F2)] = 0.065 | H-atom parameters constrained |
wR(F2) = 0.173 | w = 1/[σ2(Fo2) + (0.0746P)2 + 0.1986P] where P = (Fo2 + 2Fc2)/3 |
S = 1.01 | (Δ/σ)max = 0.001 |
6773 reflections | Δρmax = 0.23 e Å−3 |
434 parameters | Δρmin = −0.16 e Å−3 |
0 restraints | Extinction correction: SHELXL97 (Sheldrick, 2008), Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4 |
Primary atom site location: structure-invariant direct methods | Extinction coefficient: 0.0175 (19) |
C22H20N2 | γ = 75.87 (3)° |
Mr = 312.40 | V = 1730.4 (7) Å3 |
Triclinic, P1 | Z = 4 |
a = 9.7046 (19) Å | Mo Kα radiation |
b = 10.457 (2) Å | µ = 0.07 mm−1 |
c = 17.825 (4) Å | T = 294 K |
α = 84.12 (3)° | 0.20 × 0.18 × 0.15 mm |
β = 81.44 (3)° |
Rigaku SCXmini diffractometer | 6773 independent reflections |
Absorption correction: multi-scan (CrystalClear; Rigaku, 2005) | 3812 reflections with I > 2σ(I) |
Tmin = 0.984, Tmax = 0.988 | Rint = 0.057 |
16221 measured reflections |
R[F2 > 2σ(F2)] = 0.065 | 0 restraints |
wR(F2) = 0.173 | H-atom parameters constrained |
S = 1.01 | Δρmax = 0.23 e Å−3 |
6773 reflections | Δρmin = −0.16 e Å−3 |
434 parameters |
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. |
x | y | z | Uiso*/Ueq | ||
N1 | 0.6191 (2) | 1.6298 (2) | −0.44528 (12) | 0.0553 (6) | |
N2 | 0.6780 (2) | 1.57278 (19) | −0.32714 (11) | 0.0453 (5) | |
N3 | 0.1316 (2) | 1.0170 (2) | 0.07446 (11) | 0.0479 (5) | |
N4 | 0.2184 (2) | 0.98105 (19) | 0.18661 (11) | 0.0424 (5) | |
C1 | 0.8163 (3) | 1.4336 (2) | −0.43273 (14) | 0.0464 (6) | |
C2 | 0.9553 (3) | 1.4080 (3) | −0.41494 (14) | 0.0542 (7) | |
H2A | 0.9774 | 1.4587 | −0.3806 | 0.065* | |
C3 | 1.0614 (3) | 1.3078 (3) | −0.44762 (15) | 0.0586 (8) | |
H3B | 1.1543 | 1.2925 | −0.4355 | 0.070* | |
C4 | 1.0298 (3) | 1.2301 (3) | −0.49837 (16) | 0.0588 (8) | |
C5 | 0.8919 (3) | 1.2560 (3) | −0.51599 (16) | 0.0650 (8) | |
H5A | 0.8699 | 1.2052 | −0.5504 | 0.078* | |
C6 | 0.7857 (3) | 1.3558 (3) | −0.48363 (15) | 0.0576 (7) | |
H6A | 0.6930 | 1.3710 | −0.4960 | 0.069* | |
C7 | 1.1466 (3) | 1.1202 (3) | −0.53379 (19) | 0.0848 (10) | |
H7A | 1.2352 | 1.1176 | −0.5152 | 0.127* | |
H7B | 1.1578 | 1.1364 | −0.5881 | 0.127* | |
H7C | 1.1206 | 1.0371 | −0.5205 | 0.127* | |
C8 | 0.7038 (3) | 1.5452 (2) | −0.40265 (14) | 0.0466 (6) | |
C9 | 0.5663 (3) | 1.6844 (3) | −0.32230 (15) | 0.0479 (6) | |
C10 | 0.4940 (3) | 1.7545 (3) | −0.26059 (17) | 0.0612 (8) | |
H10A | 0.5174 | 1.7295 | −0.2116 | 0.073* | |
C11 | 0.3857 (3) | 1.8631 (3) | −0.2755 (2) | 0.0767 (9) | |
H11A | 0.3343 | 1.9126 | −0.2357 | 0.092* | |
C12 | 0.3519 (3) | 1.9000 (3) | −0.3491 (2) | 0.0804 (10) | |
H12A | 0.2792 | 1.9744 | −0.3575 | 0.096* | |
C13 | 0.4237 (3) | 1.8291 (3) | −0.40956 (19) | 0.0700 (9) | |
H13A | 0.4002 | 1.8542 | −0.4585 | 0.084* | |
C14 | 0.5320 (3) | 1.7190 (3) | −0.39567 (16) | 0.0523 (7) | |
C15 | 0.7380 (3) | 1.4943 (3) | −0.26301 (14) | 0.0507 (7) | |
H15A | 0.7855 | 1.4068 | −0.2790 | 0.061* | |
H15B | 0.6599 | 1.4847 | −0.2236 | 0.061* | |
C16 | 0.8433 (2) | 1.5486 (2) | −0.22885 (13) | 0.0437 (6) | |
C17 | 0.9021 (3) | 1.4811 (3) | −0.16589 (15) | 0.0618 (8) | |
H17A | 0.8757 | 1.4037 | −0.1457 | 0.074* | |
C18 | 0.9984 (3) | 1.5259 (3) | −0.13277 (17) | 0.0718 (9) | |
H18A | 1.0368 | 1.4775 | −0.0909 | 0.086* | |
C19 | 1.0397 (3) | 1.6404 (3) | −0.15976 (19) | 0.0659 (8) | |
C20 | 0.9818 (3) | 1.7078 (3) | −0.22217 (19) | 0.0662 (8) | |
H20A | 1.0078 | 1.7857 | −0.2417 | 0.079* | |
C21 | 0.8854 (3) | 1.6627 (3) | −0.25690 (16) | 0.0554 (7) | |
H21A | 0.8489 | 1.7101 | −0.2995 | 0.066* | |
C22 | 1.1441 (4) | 1.6895 (4) | −0.1216 (2) | 0.1041 (13) | |
H22A | 1.1721 | 1.6294 | −0.0791 | 0.156* | |
H22B | 1.0992 | 1.7755 | −0.1041 | 0.156* | |
H22C | 1.2272 | 1.6948 | −0.1573 | 0.156* | |
C23 | 0.3362 (3) | 1.1114 (2) | 0.07900 (13) | 0.0431 (6) | |
C24 | 0.4795 (3) | 1.0759 (3) | 0.09004 (14) | 0.0495 (7) | |
H24A | 0.5119 | 1.0032 | 0.1228 | 0.059* | |
C25 | 0.5746 (3) | 1.1477 (3) | 0.05280 (14) | 0.0541 (7) | |
H25A | 0.6702 | 1.1226 | 0.0611 | 0.065* | |
C26 | 0.5304 (3) | 1.2565 (3) | 0.00336 (14) | 0.0518 (7) | |
C27 | 0.3868 (3) | 1.2908 (3) | −0.00714 (15) | 0.0581 (7) | |
H27A | 0.3543 | 1.3637 | −0.0397 | 0.070* | |
C28 | 0.2916 (3) | 1.2198 (3) | 0.02942 (15) | 0.0532 (7) | |
H28A | 0.1962 | 1.2447 | 0.0208 | 0.064* | |
C29 | 0.6345 (3) | 1.3335 (3) | −0.03835 (17) | 0.0734 (9) | |
H29A | 0.5847 | 1.4046 | −0.0699 | 0.110* | |
H29B | 0.7084 | 1.2761 | −0.0695 | 0.110* | |
H29C | 0.6768 | 1.3690 | −0.0022 | 0.110* | |
C30 | 0.2308 (2) | 1.0356 (2) | 0.11300 (14) | 0.0438 (6) | |
C31 | 0.1011 (2) | 0.9250 (2) | 0.19544 (14) | 0.0423 (6) | |
C32 | 0.0355 (3) | 0.8616 (2) | 0.25793 (15) | 0.0526 (7) | |
H32A | 0.0700 | 0.8477 | 0.3048 | 0.063* | |
C33 | −0.0839 (3) | 0.8205 (3) | 0.24641 (17) | 0.0615 (8) | |
H33A | −0.1311 | 0.7774 | 0.2867 | 0.074* | |
C34 | −0.1361 (3) | 0.8413 (3) | 0.17649 (18) | 0.0608 (8) | |
H34A | −0.2171 | 0.8120 | 0.1714 | 0.073* | |
C35 | −0.0707 (3) | 0.9041 (2) | 0.11474 (16) | 0.0538 (7) | |
H35A | −0.1055 | 0.9172 | 0.0680 | 0.065* | |
C36 | 0.0495 (3) | 0.9472 (2) | 0.12493 (14) | 0.0447 (6) | |
C37 | 0.2984 (3) | 0.9895 (2) | 0.24814 (13) | 0.0471 (6) | |
H37A | 0.2310 | 1.0158 | 0.2929 | 0.056* | |
H37B | 0.3507 | 1.0582 | 0.2336 | 0.056* | |
C38 | 0.4024 (2) | 0.8630 (2) | 0.26853 (13) | 0.0428 (6) | |
C39 | 0.4396 (3) | 0.8375 (3) | 0.34111 (15) | 0.0651 (8) | |
H39A | 0.3976 | 0.8975 | 0.3777 | 0.078* | |
C40 | 0.5393 (3) | 0.7230 (3) | 0.36022 (16) | 0.0699 (9) | |
H40A | 0.5623 | 0.7076 | 0.4097 | 0.084* | |
C41 | 0.6042 (3) | 0.6326 (3) | 0.30811 (16) | 0.0539 (7) | |
C42 | 0.5665 (3) | 0.6578 (3) | 0.23607 (16) | 0.0546 (7) | |
H42A | 0.6086 | 0.5974 | 0.1997 | 0.065* | |
C43 | 0.4675 (3) | 0.7708 (2) | 0.21636 (14) | 0.0483 (6) | |
H43A | 0.4442 | 0.7851 | 0.1670 | 0.058* | |
C44 | 0.7142 (3) | 0.5098 (3) | 0.3292 (2) | 0.0820 (10) | |
H44A | 0.7274 | 0.5095 | 0.3815 | 0.123* | |
H44B | 0.8035 | 0.5090 | 0.2975 | 0.123* | |
H44C | 0.6816 | 0.4329 | 0.3219 | 0.123* |
U11 | U22 | U33 | U12 | U13 | U23 | |
N1 | 0.0517 (13) | 0.0609 (14) | 0.0511 (14) | −0.0031 (11) | −0.0162 (11) | −0.0040 (12) |
N2 | 0.0463 (12) | 0.0466 (12) | 0.0433 (12) | −0.0079 (10) | −0.0098 (9) | −0.0052 (10) |
N3 | 0.0442 (12) | 0.0577 (13) | 0.0432 (12) | −0.0158 (10) | −0.0102 (10) | 0.0059 (11) |
N4 | 0.0433 (12) | 0.0450 (12) | 0.0383 (12) | −0.0096 (10) | −0.0078 (9) | 0.0019 (10) |
C1 | 0.0471 (15) | 0.0490 (15) | 0.0415 (14) | −0.0080 (12) | −0.0083 (11) | 0.0000 (12) |
C2 | 0.0547 (17) | 0.0587 (17) | 0.0478 (16) | −0.0087 (14) | −0.0081 (13) | −0.0055 (14) |
C3 | 0.0518 (17) | 0.0625 (18) | 0.0529 (17) | −0.0027 (14) | −0.0039 (13) | 0.0059 (15) |
C4 | 0.067 (2) | 0.0468 (16) | 0.0526 (17) | −0.0016 (14) | 0.0037 (14) | 0.0008 (14) |
C5 | 0.074 (2) | 0.0587 (18) | 0.0642 (19) | −0.0117 (16) | −0.0110 (16) | −0.0164 (16) |
C6 | 0.0547 (17) | 0.0605 (18) | 0.0587 (17) | −0.0118 (14) | −0.0110 (13) | −0.0079 (15) |
C7 | 0.088 (2) | 0.068 (2) | 0.082 (2) | 0.0055 (18) | 0.0055 (19) | −0.0086 (18) |
C8 | 0.0438 (15) | 0.0521 (16) | 0.0460 (15) | −0.0111 (13) | −0.0110 (12) | −0.0054 (13) |
C9 | 0.0412 (14) | 0.0506 (15) | 0.0553 (17) | −0.0136 (12) | −0.0069 (12) | −0.0109 (13) |
C10 | 0.0611 (18) | 0.0663 (19) | 0.0587 (18) | −0.0145 (16) | −0.0080 (14) | −0.0167 (16) |
C11 | 0.062 (2) | 0.075 (2) | 0.090 (3) | −0.0025 (17) | −0.0051 (18) | −0.035 (2) |
C12 | 0.058 (2) | 0.072 (2) | 0.106 (3) | 0.0082 (16) | −0.0221 (19) | −0.023 (2) |
C13 | 0.0563 (18) | 0.070 (2) | 0.079 (2) | 0.0031 (16) | −0.0216 (16) | −0.0095 (18) |
C14 | 0.0415 (15) | 0.0579 (17) | 0.0590 (17) | −0.0085 (13) | −0.0117 (13) | −0.0104 (14) |
C15 | 0.0563 (17) | 0.0509 (16) | 0.0454 (15) | −0.0164 (13) | −0.0041 (13) | −0.0002 (13) |
C16 | 0.0439 (15) | 0.0468 (15) | 0.0385 (14) | −0.0067 (12) | −0.0059 (11) | −0.0026 (12) |
C17 | 0.0648 (19) | 0.0699 (19) | 0.0512 (17) | −0.0202 (16) | −0.0081 (14) | 0.0060 (15) |
C18 | 0.068 (2) | 0.093 (2) | 0.0534 (18) | −0.0091 (18) | −0.0245 (15) | −0.0008 (18) |
C19 | 0.0518 (18) | 0.069 (2) | 0.079 (2) | −0.0039 (15) | −0.0170 (16) | −0.0234 (18) |
C20 | 0.0556 (18) | 0.0503 (17) | 0.096 (2) | −0.0115 (14) | −0.0193 (17) | −0.0082 (17) |
C21 | 0.0542 (17) | 0.0454 (16) | 0.0666 (19) | −0.0085 (13) | −0.0171 (14) | 0.0017 (14) |
C22 | 0.074 (2) | 0.120 (3) | 0.132 (3) | −0.016 (2) | −0.045 (2) | −0.043 (3) |
C23 | 0.0431 (14) | 0.0497 (15) | 0.0377 (14) | −0.0132 (12) | −0.0056 (11) | −0.0029 (12) |
C24 | 0.0519 (16) | 0.0528 (16) | 0.0457 (15) | −0.0136 (13) | −0.0119 (12) | −0.0001 (13) |
C25 | 0.0463 (16) | 0.0699 (19) | 0.0513 (17) | −0.0203 (14) | −0.0062 (13) | −0.0114 (15) |
C26 | 0.0608 (18) | 0.0561 (17) | 0.0439 (15) | −0.0262 (14) | 0.0004 (13) | −0.0080 (14) |
C27 | 0.0647 (19) | 0.0566 (17) | 0.0536 (17) | −0.0194 (15) | −0.0102 (14) | 0.0100 (14) |
C28 | 0.0463 (16) | 0.0592 (17) | 0.0540 (16) | −0.0144 (13) | −0.0101 (13) | 0.0069 (14) |
C29 | 0.083 (2) | 0.083 (2) | 0.067 (2) | −0.0471 (19) | −0.0051 (16) | −0.0010 (17) |
C30 | 0.0393 (14) | 0.0464 (15) | 0.0436 (15) | −0.0065 (12) | −0.0057 (11) | −0.0020 (12) |
C31 | 0.0412 (14) | 0.0371 (13) | 0.0452 (15) | −0.0057 (11) | −0.0039 (11) | 0.0017 (12) |
C32 | 0.0537 (17) | 0.0460 (15) | 0.0538 (17) | −0.0070 (13) | −0.0056 (13) | 0.0035 (13) |
C33 | 0.0564 (18) | 0.0562 (17) | 0.067 (2) | −0.0160 (14) | 0.0065 (15) | 0.0066 (15) |
C34 | 0.0439 (16) | 0.0567 (17) | 0.081 (2) | −0.0146 (13) | −0.0078 (15) | 0.0048 (16) |
C35 | 0.0448 (16) | 0.0552 (17) | 0.0631 (18) | −0.0140 (13) | −0.0148 (13) | 0.0045 (14) |
C36 | 0.0419 (14) | 0.0452 (15) | 0.0446 (15) | −0.0061 (12) | −0.0080 (11) | 0.0027 (12) |
C37 | 0.0542 (16) | 0.0481 (15) | 0.0392 (14) | −0.0089 (13) | −0.0113 (12) | −0.0044 (12) |
C38 | 0.0414 (14) | 0.0524 (15) | 0.0370 (14) | −0.0163 (12) | −0.0063 (11) | 0.0002 (12) |
C39 | 0.0653 (19) | 0.083 (2) | 0.0389 (16) | 0.0035 (16) | −0.0135 (13) | −0.0090 (15) |
C40 | 0.0641 (19) | 0.097 (2) | 0.0414 (16) | −0.0047 (18) | −0.0168 (14) | 0.0069 (17) |
C41 | 0.0436 (15) | 0.0598 (18) | 0.0582 (18) | −0.0130 (13) | −0.0142 (13) | 0.0097 (15) |
C42 | 0.0530 (17) | 0.0521 (17) | 0.0584 (18) | −0.0104 (13) | −0.0087 (13) | −0.0052 (14) |
C43 | 0.0586 (17) | 0.0500 (16) | 0.0391 (14) | −0.0144 (13) | −0.0142 (12) | 0.0000 (13) |
C44 | 0.070 (2) | 0.075 (2) | 0.095 (3) | −0.0042 (17) | −0.0285 (18) | 0.0143 (19) |
N1—C8 | 1.315 (3) | C21—C20 | 1.389 (4) |
N1—C14 | 1.388 (3) | C21—H21A | 0.9300 |
N2—C8 | 1.379 (3) | C22—H22A | 0.9600 |
N2—C9 | 1.386 (3) | C22—H22B | 0.9600 |
N2—C15 | 1.446 (3) | C22—H22C | 0.9600 |
N3—C30 | 1.324 (3) | C23—C24 | 1.388 (3) |
N3—C36 | 1.383 (3) | C23—C28 | 1.386 (3) |
N4—C30 | 1.376 (3) | C23—C30 | 1.467 (3) |
N4—C31 | 1.384 (3) | C24—C25 | 1.382 (3) |
N4—C37 | 1.456 (3) | C24—H24A | 0.9300 |
C1—C2 | 1.387 (3) | C25—H25A | 0.9300 |
C1—C6 | 1.387 (3) | C26—C25 | 1.387 (4) |
C2—C3 | 1.384 (4) | C26—C29 | 1.508 (4) |
C2—H2A | 0.9300 | C27—C26 | 1.388 (4) |
C3—H3B | 0.9300 | C27—H27A | 0.9300 |
C4—C3 | 1.388 (4) | C28—C27 | 1.373 (3) |
C4—C5 | 1.376 (4) | C28—H28A | 0.9300 |
C4—C7 | 1.518 (4) | C29—H29A | 0.9600 |
C5—H5A | 0.9300 | C29—H29B | 0.9600 |
C6—C5 | 1.381 (4) | C29—H29C | 0.9600 |
C6—H6A | 0.9300 | C31—C32 | 1.389 (3) |
C7—H7A | 0.9600 | C31—C36 | 1.398 (3) |
C7—H7B | 0.9600 | C32—C33 | 1.378 (4) |
C7—H7C | 0.9600 | C32—H32A | 0.9300 |
C8—C1 | 1.474 (3) | C33—H33A | 0.9300 |
C9—C10 | 1.387 (4) | C34—C33 | 1.391 (4) |
C9—C14 | 1.388 (4) | C34—C35 | 1.376 (4) |
C10—C11 | 1.380 (4) | C34—H34A | 0.9300 |
C10—H10A | 0.9300 | C35—H35A | 0.9300 |
C11—H11A | 0.9300 | C36—C35 | 1.390 (3) |
C12—C11 | 1.393 (4) | C37—C38 | 1.504 (3) |
C12—H12A | 0.9300 | C37—H37A | 0.9700 |
C13—C12 | 1.373 (4) | C37—H37B | 0.9700 |
C13—H13A | 0.9300 | C38—C39 | 1.377 (3) |
C14—C13 | 1.385 (4) | C38—C43 | 1.380 (3) |
C15—H15A | 0.9700 | C39—C40 | 1.391 (4) |
C15—H15B | 0.9700 | C39—H39A | 0.9300 |
C16—C15 | 1.509 (3) | C40—H40A | 0.9300 |
C16—C17 | 1.384 (4) | C41—C40 | 1.367 (4) |
C16—C21 | 1.376 (3) | C41—C44 | 1.510 (4) |
C17—C18 | 1.369 (4) | C42—C41 | 1.369 (4) |
C17—H17A | 0.9300 | C42—H42A | 0.9300 |
C18—H18A | 0.9300 | C43—C42 | 1.380 (3) |
C19—C18 | 1.373 (4) | C43—H43A | 0.9300 |
C19—C22 | 1.511 (4) | C44—H44A | 0.9600 |
C20—C19 | 1.372 (4) | C44—H44B | 0.9600 |
C20—H20A | 0.9300 | C44—H44C | 0.9600 |
C8—N1—C14 | 105.0 (2) | C19—C22—H22C | 109.5 |
C8—N2—C15 | 128.5 (2) | H22A—C22—H22B | 109.5 |
C9—N2—C8 | 105.8 (2) | H22A—C22—H22C | 109.5 |
C9—N2—C15 | 125.2 (2) | H22B—C22—H22C | 109.5 |
C30—N3—C36 | 105.4 (2) | C24—C23—C30 | 123.7 (2) |
C30—N4—C31 | 106.51 (19) | C28—C23—C24 | 118.3 (2) |
C30—N4—C37 | 129.1 (2) | C28—C23—C30 | 118.0 (2) |
C31—N4—C37 | 124.1 (2) | C23—C24—H24A | 119.7 |
C2—C1—C8 | 121.9 (2) | C25—C24—C23 | 120.6 (2) |
C6—C1—C2 | 118.5 (2) | C25—C24—H24A | 119.7 |
C6—C1—C8 | 119.5 (2) | C24—C25—C26 | 121.3 (2) |
C1—C2—C3 | 120.9 (3) | C24—C25—H25A | 119.3 |
C1—C2—H2A | 119.5 | C26—C25—H25A | 119.3 |
C3—C2—H2A | 119.5 | C25—C26—C29 | 121.4 (3) |
C2—C3—C4 | 120.3 (3) | C27—C26—C25 | 117.4 (2) |
C2—C3—H3B | 119.9 | C27—C26—C29 | 121.1 (3) |
C4—C3—H3B | 119.9 | C26—C27—H27A | 119.2 |
C3—C4—C7 | 120.0 (3) | C28—C27—C26 | 121.6 (3) |
C5—C4—C3 | 118.6 (3) | C28—C27—H27A | 119.2 |
C5—C4—C7 | 121.3 (3) | C23—C28—H28A | 119.6 |
C4—C5—C6 | 121.3 (3) | C27—C28—C23 | 120.7 (2) |
C4—C5—H5A | 119.3 | C27—C28—H28A | 119.6 |
C6—C5—H5A | 119.3 | C26—C29—H29A | 109.5 |
C1—C6—H6A | 119.8 | C26—C29—H29B | 109.5 |
C5—C6—C1 | 120.4 (3) | C26—C29—H29C | 109.5 |
C5—C6—H6A | 119.8 | H29A—C29—H29B | 109.5 |
C4—C7—H7A | 109.5 | H29A—C29—H29C | 109.5 |
C4—C7—H7B | 109.5 | H29B—C29—H29C | 109.5 |
C4—C7—H7C | 109.5 | N3—C30—N4 | 112.4 (2) |
H7A—C7—H7B | 109.5 | N3—C30—C23 | 121.6 (2) |
H7A—C7—H7C | 109.5 | N4—C30—C23 | 125.9 (2) |
H7B—C7—H7C | 109.5 | N4—C31—C32 | 131.9 (2) |
N1—C8—N2 | 113.1 (2) | N4—C31—C36 | 105.7 (2) |
N1—C8—C1 | 123.4 (2) | C32—C31—C36 | 122.4 (2) |
N2—C8—C1 | 123.5 (2) | C31—C32—H32A | 122.0 |
N2—C9—C10 | 131.3 (3) | C33—C32—C31 | 116.1 (3) |
N2—C9—C14 | 106.1 (2) | C33—C32—H32A | 122.0 |
C10—C9—C14 | 122.6 (3) | C32—C33—C34 | 122.2 (3) |
C9—C10—H10A | 121.7 | C32—C33—H33A | 118.9 |
C11—C10—C9 | 116.6 (3) | C34—C33—H33A | 118.9 |
C11—C10—H10A | 121.7 | C33—C34—H34A | 119.2 |
C10—C11—C12 | 121.3 (3) | C35—C34—C33 | 121.6 (3) |
C10—C11—H11A | 119.4 | C35—C34—H34A | 119.2 |
C12—C11—H11A | 119.4 | C34—C35—C36 | 117.4 (3) |
C11—C12—H12A | 119.3 | C34—C35—H35A | 121.3 |
C13—C12—C11 | 121.4 (3) | C36—C35—H35A | 121.3 |
C13—C12—H12A | 119.3 | N3—C36—C35 | 129.7 (2) |
C12—C13—C14 | 118.2 (3) | N3—C36—C31 | 109.9 (2) |
C12—C13—H13A | 120.9 | C35—C36—C31 | 120.4 (2) |
C14—C13—H13A | 120.9 | N4—C37—C38 | 114.20 (19) |
N1—C14—C9 | 110.0 (2) | N4—C37—H37A | 108.7 |
C13—C14—N1 | 130.1 (3) | N4—C37—H37B | 108.7 |
C13—C14—C9 | 119.9 (3) | C38—C37—H37A | 108.7 |
N2—C15—C16 | 115.6 (2) | C38—C37—H37B | 108.7 |
N2—C15—H15A | 108.4 | H37A—C37—H37B | 107.6 |
N2—C15—H15B | 108.4 | C39—C38—C43 | 117.4 (2) |
C16—C15—H15A | 108.4 | C39—C38—C37 | 119.9 (2) |
C16—C15—H15B | 108.4 | C43—C38—C37 | 122.6 (2) |
H15A—C15—H15B | 107.4 | C38—C39—C40 | 120.7 (3) |
C17—C16—C15 | 119.0 (2) | C38—C39—H39A | 119.7 |
C21—C16—C17 | 117.4 (2) | C40—C39—H39A | 119.7 |
C21—C16—C15 | 123.7 (2) | C39—C40—H40A | 119.2 |
C16—C17—H17A | 119.3 | C41—C40—C39 | 121.6 (3) |
C18—C17—C16 | 121.4 (3) | C41—C40—H40A | 119.2 |
C18—C17—H17A | 119.3 | C40—C41—C44 | 121.1 (3) |
C17—C18—C19 | 121.7 (3) | C42—C41—C40 | 117.6 (3) |
C17—C18—H18A | 119.2 | C42—C41—C44 | 121.2 (3) |
C19—C18—H18A | 119.2 | C41—C42—C43 | 121.4 (3) |
C18—C19—C20 | 117.2 (3) | C41—C42—H42A | 119.3 |
C18—C19—C22 | 120.9 (3) | C43—C42—H42A | 119.3 |
C20—C19—C22 | 121.8 (3) | C38—C43—H43A | 119.4 |
C19—C20—C21 | 121.7 (3) | C42—C43—C38 | 121.3 (2) |
C19—C20—H20A | 119.2 | C42—C43—H43A | 119.4 |
C21—C20—H20A | 119.2 | C41—C44—H44A | 109.5 |
C16—C21—C20 | 120.6 (3) | C41—C44—H44B | 109.5 |
C16—C21—H21A | 119.7 | C41—C44—H44C | 109.5 |
C20—C21—H21A | 119.7 | H44A—C44—H44B | 109.5 |
C19—C22—H22A | 109.5 | H44A—C44—H44C | 109.5 |
C19—C22—H22B | 109.5 | H44B—C44—H44C | 109.5 |
D—H···A | D—H | H···A | D···A | D—H···A |
C35—H35A···N3i | 0.93 | 2.60 | 3.491 (3) | 162 |
Symmetry code: (i) −x, −y+2, −z. |
Experimental details
Crystal data | |
Chemical formula | C22H20N2 |
Mr | 312.40 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 294 |
a, b, c (Å) | 9.7046 (19), 10.457 (2), 17.825 (4) |
α, β, γ (°) | 84.12 (3), 81.44 (3), 75.87 (3) |
V (Å3) | 1730.4 (7) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.07 |
Crystal size (mm) | 0.20 × 0.18 × 0.15 |
Data collection | |
Diffractometer | Rigaku SCXmini diffractometer |
Absorption correction | Multi-scan (CrystalClear; Rigaku, 2005) |
Tmin, Tmax | 0.984, 0.988 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 16221, 6773, 3812 |
Rint | 0.057 |
(sin θ/λ)max (Å−1) | 0.617 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.065, 0.173, 1.01 |
No. of reflections | 6773 |
No. of parameters | 434 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.23, −0.16 |
Computer programs: CrystalClear (Rigaku, 2005), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008).
D—H···A | D—H | H···A | D···A | D—H···A |
C35—H35A···N3i | 0.93 | 2.60 | 3.491 (3) | 162 |
Symmetry code: (i) −x, −y+2, −z. |
References
Allen, F. H., Kennard, O., Watson, D. G., Brammer, L., Orpen, A. G. & Taylor, R. (1987). J. Chem. Soc. Perkin Trans. 2, pp. S1–19. CrossRef Web of Science Google Scholar
Bernstein, J., Davis, R. E., Shimoni, L. & Chang, N.-L. (1995). Angew. Chem. Int. Ed. Engl. 34, 1555–1573. CrossRef CAS Web of Science Google Scholar
Chen, J. & Ruan, Y. (2007). Acta Cryst. E63, m2964. Web of Science CSD CrossRef IUCr Journals Google Scholar
Garuti, L., Roberti, M. & Cermelli, C. (1999). Bioorg. Med. Chem. Lett. 9, 2525–2530. Web of Science CrossRef PubMed CAS Google Scholar
Matsuno, T., Kato, M., Sasahara, H., Watanabe, T., Inaba, M., Takahashi, M., Yaguchi, S. I., Yoshioka, K., Sakato, M. & Kawashima, S. (2000). Chem. Pharm. Bull. 48, 1778–1781. CrossRef PubMed CAS Google Scholar
Rigaku (2005). CrystalClear. Rigaku Corporation, Tokyo, Japan. Google Scholar
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar
Tlahuext, H., Tlahuextl, M., López-Gómez, S. & Tapia-Benavides, A. R. (2007). Acta Cryst. E63, m1263–m1265. 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.
Benzimidazole derivatives have attracted considerable attention because of their biological and pharmaceutical activities (Matsuno et al., 2000; Garuti et al., 1999). In addition, they play an important role in the development of coordination chemistry. Many derivatives of benzimidazole have been prepared and their complexes have been studied (Tlahuext et al., 2007; Chen & Ruan, 2007). We report herein the crystal structure of the title compound.
The asymmetric unit of the title compound contains two crystallographically independent molecules (Fig. 1), in which the bond lengths (Allen et al., 1987) and angles are within normal ranges. Rings A (C1-C6), B (N1/N2/C8/C9/C14), C (C9-C14), D (C16-C21) and E (C23-C28), F (N3/N4/C30/C31/C36), G (C31-C36), H (C38-C43) are, of course, planar. The planar benzimidazole ring systems, (N1/N2/C8-C14) and (N3/N4/C30-C36), are oriented with respect to the adjacent rings, A, D and E, H, at dihedral angles of 47.08 (8), 76.85 (8) ° and 39.52 (9), 87.49 (9) °, respectively, while the dihedral angles between rings A, D and E, H are 73.99 (3) and 81.51 (9) °, respectively.
In the crystal structure, intermolecular C-H···N interactions (Table 1) link the molecules into centrosymmetric dimers through R22(8) ring motifs (Bernstein et al., 1995) (Fig. 2), in which they may be effective in the stabilization of the structure.