Supporting information
Crystallographic Information File (CIF) https://doi.org/10.1107/S1600536807042687/ng2316sup1.cif | |
Structure factor file (CIF format) https://doi.org/10.1107/S1600536807042687/ng2316Isup2.hkl |
CCDC reference: 663806
H atoms bonded to N atoms were located in a difference Fourier map and refined with distance restraints of N—H = 0.87 (2) Å, and with Uiso(H) = 1.2Ueq(N). All other H atom positions were also observed in difference Fourier map. Nevertheless, in the refinement procedure the hydrogen atoms were positioned geometrically and refined using a riding model (including free rotation about the C—C bond), with C—H = 0.95–0.99 Å (C—H = 0.97 Å for CH2 groups, 0.96 Å for CH3 groups, and 0.93 Å for aromatic CH) and with Uiso(H) = 1.5Ueq(C) for methyl groups and Uiso(H) = 1.2Ueq(C) for all other H atoms. Refinement was performed with data set combined of two independent measurements and with BASF parameter as the scale factor for second data set (BASF parameter converged to 0.94477)
Benzodiazepines are one of the most important substances in medicinal chemistry, representing the prototypical 'privileged structure' (Evans et al. 1988). Compounds based on the diazepine skeleton are psychotherapeutic agents widely used for the treatment of anxiety and neurosis (Sternbach, 1978). The crystal structure analysis of N-(4-methylpyridin-2-yl)-5H-dibenzo[d,f][1,3] diazepine-6-carboxamide was performed to find out the influence of methyl substituent on molecular geometry and packing properties. The molecular structure of the title compound is shown in Fig. 1. The symmetrically independent part of the unit cell is composed of title compound molecule and disordered toluene molecule. The core of the diazepine molecule is composed of a seven-membered ring to which a pyridin-2-ylamino carbonyl substituent is attached and two benzene rings are fused. The puckering parameters of the seven-membered ring (atoms in N3, C2,···,C31 sequence): q2 = 0.5752, q3 = 0.0819, QT = 0.5810, φ2 = -6.33, φ3 = 10.46, θ2 = 81.89°, indicate a twisted-boat conformation with a pseudo-mirror plane (Cs) through the N3 atom and the centre of C41—C46 bond. From the chemical point of view there is also a pseudo 2-fold axis (C2) bisecting the diazepine ring through C2 and the center of C36–C46 bond. The bond lengths and valence angles are typical and comparable with the values reported in the literature (Allen et al. 1987). Two N atoms are involved in hydrogen bonds: two intra- and one intermolecular (Table 1). The intermolecular N3—H3···O1 [-x, 1 - y, 1 - z] interaction is relatively weak due to simultaneous donor participation in intramolecular interaction (bifurcated hydrogen bond). In addition, there are two types of π–π interactions, which assist in the stabilization of the three-dimensional-packing. The benzene ring C31···C36 is strictly parallel to another one in position [1 - x, 1 - y, 1 - z], with interplanar spacing of 3.556 Å, the ring-centroid separation of 3.883 Å and with ring offset of 1.560 Å. The pyridine ring is nearly parallel to another benzene ring C41···C46 of the molecule at [1 - x, - y, 1 - z]. The interplanar spacing is 3.651 Å, the corresponding ring-centroid separation is 3.790 Å, resulting in the offset of 1.017 Å. The π–π interaction are illustrated in Fig. 2. As it can be seen in Fig. 2, the solvent accessible cavities at 0, 1/2, 1 are filled with disordered toluene molecules which stabilized three-dimensional structure (total potential solvent area of 195.7 Å3 makes 20.3% of unit cell volume).
For literature on the medicinal and psychotherapeutic uses of similar compounds, see Evans et al. (1988); Sternbach (1978). For comparativ bond distances, see Allen et al. (1987).
Data collection: COLLECT (Nonius, 2000); cell refinement: SCALEPACK (Otwinowski & Minor, 1997); data reduction: SCALEPACK and DENZO (Otwinowski & Minor, 1997); program(s) used to solve structure: SIR92 (Altomare et al., 1994); program(s) used to refine structure: SHELXL97 (Sheldrick, 1997); molecular graphics: ORTEP-3 (Farrugia, 1997); software used to prepare material for publication: SHELXL97 (Sheldrick, 1997).
C20H16N4O·0.5C7H8 | Z = 2 |
Mr = 374.44 | F(000) = 394 |
Triclinic, P1 | Dx = 1.291 Mg m−3 |
Hall symbol: -P 1 | Mo Kα radiation, λ = 0.71073 Å |
a = 8.9323 (2) Å | Cell parameters from 2469 reflections |
b = 9.6863 (2) Å | θ = 1.0–27.5° |
c = 12.1478 (3) Å | µ = 0.08 mm−1 |
α = 77.050 (1)° | T = 293 K |
β = 87.529 (1)° | Prism, orange |
γ = 70.191 (1)° | 0.29 × 0.21 × 0.15 mm |
V = 963.08 (4) Å3 |
Nonius KappaCCD diffractometer | 8631 independent reflections |
Radiation source: fine-focus sealed tube | 5192 reflections with I > 2σ(I) |
Horizontally mounted graphite crystal monochromator | Rint = 0.000 |
Detector resolution: 9 pixels mm-1 | θmax = 27.4°, θmin = 2.4° |
φ and ω scans to fill asymmetric unit | h = −11→11 |
Absorption correction: multi-scan (DENZO and SCALEPACK; Otwinowski & Minor, 1997) | k = −12→12 |
Tmin = 0.977, Tmax = 0.988 | l = 0→15 |
17061 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)] = 0.052 | H atoms treated by a mixture of independent and constrained refinement |
wR(F2) = 0.148 | w = 1/[σ2(Fo2) + (0.0656P)2 + 0.0957P] where P = (Fo2 + 2Fc2)/3 |
S = 1.02 | (Δ/σ)max = 0.01 |
8631 reflections | Δρmax = 0.18 e Å−3 |
288 parameters | Δρmin = −0.18 e Å−3 |
0 restraints | Extinction correction: SHELXL97 (Sheldrick, 1997), Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4 |
Primary atom site location: structure-invariant direct methods | Extinction coefficient: 0.014 (3) |
C20H16N4O·0.5C7H8 | γ = 70.191 (1)° |
Mr = 374.44 | V = 963.08 (4) Å3 |
Triclinic, P1 | Z = 2 |
a = 8.9323 (2) Å | Mo Kα radiation |
b = 9.6863 (2) Å | µ = 0.08 mm−1 |
c = 12.1478 (3) Å | T = 293 K |
α = 77.050 (1)° | 0.29 × 0.21 × 0.15 mm |
β = 87.529 (1)° |
Nonius KappaCCD diffractometer | 8631 independent reflections |
Absorption correction: multi-scan (DENZO and SCALEPACK; Otwinowski & Minor, 1997) | 5192 reflections with I > 2σ(I) |
Tmin = 0.977, Tmax = 0.988 | Rint = 0.000 |
17061 measured reflections |
R[F2 > 2σ(F2)] = 0.052 | 0 restraints |
wR(F2) = 0.148 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.02 | Δρmax = 0.18 e Å−3 |
8631 reflections | Δρmin = −0.18 e Å−3 |
288 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 with redundant (i.e. not merged/unique) data set: data set combined of two independent measurements; refinement with BASF parameter as the scale factor for second data set. 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 | Occ. (<1) | |
C1 | 0.17801 (13) | 0.23113 (12) | 0.51837 (9) | 0.0458 (3) | |
O1 | 0.07918 (10) | 0.32376 (9) | 0.56173 (8) | 0.0611 (2) | |
C2 | 0.27718 (12) | 0.28173 (12) | 0.42283 (9) | 0.0430 (3) | |
N3 | 0.23275 (11) | 0.43460 (10) | 0.38922 (9) | 0.0505 (3) | |
H3 | 0.1546 (16) | 0.4821 (14) | 0.4286 (10) | 0.058 (4)* | |
C31 | 0.34450 (12) | 0.51109 (11) | 0.36175 (9) | 0.0435 (3) | |
C32 | 0.32397 (14) | 0.63436 (12) | 0.40814 (10) | 0.0534 (3) | |
H32 | 0.2384 | 0.6645 | 0.4540 | 0.064* | |
C33 | 0.42946 (16) | 0.71276 (13) | 0.38688 (11) | 0.0605 (3) | |
H33 | 0.4140 | 0.7963 | 0.4174 | 0.073* | |
C34 | 0.55721 (15) | 0.66709 (14) | 0.32055 (12) | 0.0603 (3) | |
H34 | 0.6297 | 0.7184 | 0.3071 | 0.072* | |
C35 | 0.57746 (14) | 0.54485 (13) | 0.27409 (10) | 0.0521 (3) | |
H35 | 0.6645 | 0.5149 | 0.2294 | 0.062* | |
C36 | 0.47134 (12) | 0.46415 (11) | 0.29185 (9) | 0.0427 (2) | |
C46 | 0.49668 (12) | 0.33809 (12) | 0.23420 (9) | 0.0430 (2) | |
C45 | 0.56872 (14) | 0.34457 (14) | 0.13001 (10) | 0.0560 (3) | |
H45 | 0.5935 | 0.4302 | 0.0970 | 0.067* | |
C44 | 0.60463 (17) | 0.22908 (16) | 0.07395 (12) | 0.0687 (4) | |
H44 | 0.6513 | 0.2380 | 0.0040 | 0.082* | |
C43 | 0.57127 (17) | 0.10084 (17) | 0.12164 (12) | 0.0702 (4) | |
H43 | 0.5972 | 0.0214 | 0.0852 | 0.084* | |
C42 | 0.49880 (14) | 0.09106 (14) | 0.22422 (11) | 0.0565 (3) | |
H42 | 0.4765 | 0.0039 | 0.2565 | 0.068* | |
C41 | 0.45811 (12) | 0.20788 (12) | 0.28090 (9) | 0.0428 (2) | |
N4 | 0.38063 (10) | 0.17891 (10) | 0.38303 (8) | 0.0450 (2) | |
N2 | 0.20866 (12) | 0.08255 (11) | 0.54501 (9) | 0.0513 (3) | |
H2 | 0.2779 (16) | 0.0327 (15) | 0.5026 (12) | 0.069 (4)* | |
C21 | 0.12759 (13) | −0.00035 (12) | 0.61882 (9) | 0.0458 (3) | |
C22 | 0.03000 (14) | 0.05641 (14) | 0.70102 (10) | 0.0531 (3) | |
H22 | 0.0155 | 0.1528 | 0.7103 | 0.064* | |
C23 | −0.04599 (15) | −0.03245 (15) | 0.76942 (10) | 0.0577 (3) | |
C24 | −0.01902 (16) | −0.17409 (15) | 0.75086 (11) | 0.0645 (4) | |
H24 | −0.0679 | −0.2374 | 0.7946 | 0.077* | |
C25 | 0.08051 (16) | −0.22065 (14) | 0.66741 (12) | 0.0624 (3) | |
H25 | 0.0970 | −0.3166 | 0.6565 | 0.075* | |
N26 | 0.15561 (12) | −0.13681 (10) | 0.60055 (8) | 0.0539 (3) | |
C27 | −0.1531 (2) | 0.0259 (2) | 0.86000 (13) | 0.0853 (5) | |
H27A | −0.1950 | −0.0498 | 0.8997 | 0.102* | |
H27B | −0.2393 | 0.1146 | 0.8260 | 0.102* | |
H27C | −0.0933 | 0.0502 | 0.9121 | 0.102* | |
C50 | 0.0601 (10) | 0.3448 (10) | −0.1225 (8) | 0.141 (4) | 0.50 |
H50A | 0.0559 | 0.4006 | −0.1991 | 0.169* | 0.50 |
H50B | −0.0135 | 0.2908 | −0.1153 | 0.169* | 0.50 |
H50C | 0.1659 | 0.2749 | −0.1032 | 0.169* | 0.50 |
C51 | 0.0177 (5) | 0.4482 (4) | −0.0469 (2) | 0.0800 (9) | 0.50 |
C52 | 0.1356 (3) | 0.4569 (3) | 0.0196 (3) | 0.0699 (17) | 0.50 |
H52 | 0.2411 | 0.3975 | 0.0150 | 0.084* | 0.50 |
C53 | 0.0958 (5) | 0.5544 (4) | 0.0928 (2) | 0.0986 (13) | 0.50 |
H53 | 0.1747 | 0.5603 | 0.1373 | 0.118* | 0.50 |
C54 | −0.0619 (6) | 0.6433 (4) | 0.0996 (3) | 0.118 (4) | 0.50 |
H54 | −0.0886 | 0.7085 | 0.1486 | 0.142* | 0.50 |
C55 | −0.1799 (3) | 0.6345 (4) | 0.0332 (4) | 0.1057 (14) | 0.50 |
H55 | −0.2854 | 0.6940 | 0.0377 | 0.127* | 0.50 |
C56 | −0.1400 (4) | 0.5370 (5) | −0.0401 (3) | 0.099 (3) | 0.50 |
H56 | −0.2189 | 0.5312 | −0.0845 | 0.119* | 0.50 |
U11 | U22 | U33 | U12 | U13 | U23 | |
C1 | 0.0459 (6) | 0.0426 (6) | 0.0505 (6) | −0.0172 (5) | 0.0101 (5) | −0.0112 (5) |
O1 | 0.0620 (5) | 0.0468 (5) | 0.0748 (6) | −0.0191 (4) | 0.0306 (5) | −0.0182 (4) |
C2 | 0.0421 (5) | 0.0398 (6) | 0.0486 (6) | −0.0160 (4) | 0.0072 (5) | −0.0103 (5) |
N3 | 0.0454 (5) | 0.0385 (5) | 0.0656 (6) | −0.0132 (4) | 0.0204 (5) | −0.0124 (4) |
C31 | 0.0451 (6) | 0.0366 (5) | 0.0464 (6) | −0.0134 (4) | 0.0077 (5) | −0.0062 (4) |
C32 | 0.0592 (7) | 0.0416 (6) | 0.0570 (7) | −0.0142 (5) | 0.0147 (6) | −0.0128 (5) |
C33 | 0.0734 (8) | 0.0438 (7) | 0.0698 (8) | −0.0238 (6) | 0.0090 (7) | −0.0187 (6) |
C34 | 0.0628 (7) | 0.0495 (7) | 0.0760 (9) | −0.0293 (6) | 0.0082 (7) | −0.0139 (6) |
C35 | 0.0500 (6) | 0.0488 (7) | 0.0588 (7) | −0.0208 (5) | 0.0128 (5) | −0.0101 (5) |
C36 | 0.0435 (5) | 0.0381 (6) | 0.0446 (6) | −0.0137 (4) | 0.0060 (5) | −0.0063 (4) |
C46 | 0.0387 (5) | 0.0444 (6) | 0.0449 (6) | −0.0130 (4) | 0.0064 (5) | −0.0104 (5) |
C45 | 0.0584 (7) | 0.0615 (7) | 0.0519 (7) | −0.0253 (6) | 0.0156 (6) | −0.0150 (6) |
C44 | 0.0777 (9) | 0.0797 (10) | 0.0563 (8) | −0.0304 (7) | 0.0272 (7) | −0.0292 (7) |
C43 | 0.0783 (9) | 0.0711 (9) | 0.0721 (9) | −0.0259 (7) | 0.0227 (8) | −0.0404 (7) |
C42 | 0.0594 (7) | 0.0505 (7) | 0.0644 (8) | −0.0199 (6) | 0.0138 (6) | −0.0221 (6) |
C41 | 0.0389 (5) | 0.0421 (6) | 0.0459 (6) | −0.0114 (4) | 0.0058 (5) | −0.0112 (4) |
N4 | 0.0454 (5) | 0.0399 (5) | 0.0496 (5) | −0.0148 (4) | 0.0107 (4) | −0.0110 (4) |
N2 | 0.0558 (6) | 0.0414 (5) | 0.0557 (6) | −0.0171 (4) | 0.0203 (5) | −0.0110 (4) |
C21 | 0.0452 (6) | 0.0430 (6) | 0.0466 (6) | −0.0160 (5) | 0.0030 (5) | −0.0033 (5) |
C22 | 0.0604 (7) | 0.0534 (7) | 0.0495 (6) | −0.0248 (6) | 0.0104 (6) | −0.0121 (5) |
C23 | 0.0575 (7) | 0.0733 (9) | 0.0446 (6) | −0.0305 (6) | 0.0065 (6) | −0.0053 (6) |
C24 | 0.0656 (8) | 0.0658 (9) | 0.0628 (8) | −0.0354 (7) | 0.0029 (7) | 0.0049 (6) |
C25 | 0.0651 (8) | 0.0464 (7) | 0.0745 (9) | −0.0238 (6) | 0.0006 (7) | −0.0026 (6) |
N26 | 0.0550 (6) | 0.0419 (5) | 0.0615 (6) | −0.0163 (4) | 0.0049 (5) | −0.0058 (4) |
C27 | 0.0911 (11) | 0.1162 (13) | 0.0609 (9) | −0.0534 (10) | 0.0294 (8) | −0.0204 (9) |
C50 | 0.189 (11) | 0.164 (8) | 0.103 (4) | −0.106 (7) | 0.024 (5) | −0.027 (5) |
C51 | 0.104 (3) | 0.076 (2) | 0.0657 (19) | −0.055 (2) | 0.010 (2) | 0.0105 (16) |
C52 | 0.049 (3) | 0.080 (4) | 0.076 (2) | −0.037 (3) | −0.010 (2) | 0.018 (2) |
C53 | 0.100 (3) | 0.114 (4) | 0.089 (3) | −0.062 (3) | −0.022 (2) | 0.008 (2) |
C54 | 0.157 (9) | 0.081 (4) | 0.114 (6) | −0.049 (5) | 0.037 (5) | −0.010 (4) |
C55 | 0.081 (3) | 0.105 (3) | 0.117 (4) | −0.037 (2) | 0.014 (3) | 0.011 (3) |
C56 | 0.096 (6) | 0.114 (7) | 0.084 (3) | −0.054 (5) | −0.007 (3) | 0.015 (3) |
C1—O1 | 1.223 (1) | N2—H2 | 0.87 (1) |
C1—N2 | 1.335 (1) | C21—N26 | 1.327 (1) |
C1—C2 | 1.524 (2) | C21—C22 | 1.380 (2) |
C2—N4 | 1.278 (1) | C22—C23 | 1.385 (2) |
C2—N3 | 1.364 (1) | C22—H22 | 0.9300 |
N3—C31 | 1.421 (1) | C23—C24 | 1.379 (2) |
N3—H3 | 0.88 (1) | C23—C27 | 1.506 (2) |
C31—C32 | 1.386 (2) | C24—C25 | 1.370 (2) |
C31—C36 | 1.397 (1) | C24—H24 | 0.9300 |
C32—C33 | 1.381 (2) | C25—N26 | 1.340 (2) |
C32—H32 | 0.9300 | C25—H25 | 0.9300 |
C33—C34 | 1.373 (2) | C27—H27A | 0.9600 |
C33—H33 | 0.9300 | C27—H27B | 0.9600 |
C34—C35 | 1.378 (2) | C27—H27C | 0.9600 |
C34—H34 | 0.9300 | C50—C51 | 1.455 (8) |
C35—C36 | 1.402 (2) | C50—H50A | 0.9600 |
C35—H35 | 0.9300 | C50—H50B | 0.9600 |
C36—C46 | 1.488 (2) | C50—H50C | 0.9600 |
C46—C45 | 1.393 (2) | C51—C52 | 1.3900 |
C46—C41 | 1.410 (2) | C51—C56 | 1.3900 |
C45—C44 | 1.377 (2) | C52—C53 | 1.3900 |
C45—H45 | 0.9300 | C52—H52 | 0.9300 |
C44—C43 | 1.372 (2) | C53—C54 | 1.3900 |
C44—H44 | 0.9300 | C53—H53 | 0.9300 |
C43—C42 | 1.378 (2) | C54—C55 | 1.3900 |
C43—H43 | 0.9300 | C54—H54 | 0.9300 |
C42—C41 | 1.391 (1) | C55—C56 | 1.3900 |
C42—H42 | 0.9300 | C55—H55 | 0.9300 |
C41—N4 | 1.414 (1) | C56—H56 | 0.9300 |
N2—C21 | 1.410 (1) | ||
O1—C1—N2 | 126.0 (1) | C2—N4—C41 | 123.5 (1) |
O1—C1—C2 | 120.4 (1) | C1—N2—C21 | 128.8 (1) |
N2—C1—C2 | 113.7 (1) | C1—N2—H2 | 114.6 (9) |
N4—C2—N3 | 130.1 (1) | C21—N2—H2 | 115.8 (9) |
N4—C2—C1 | 117.1 (1) | N26—C21—C22 | 124.3 (1) |
N3—C2—C1 | 112.7 (1) | N26—C21—N2 | 112.9 (1) |
C2—N3—C31 | 122.7 (1) | C22—C21—N2 | 122.8 (1) |
C2—N3—H3 | 113.0 (8) | C21—C22—C23 | 118.9 (1) |
C31—N3—H3 | 111.5 (8) | C21—C22—H22 | 120.5 |
C32—C31—C36 | 120.8 (1) | C23—C22—H22 | 120.5 |
C32—C31—N3 | 117.3 (1) | C24—C23—C22 | 117.4 (1) |
C36—C31—N3 | 121.9 (1) | C24—C23—C27 | 122.3 (1) |
C33—C32—C31 | 120.6 (1) | C22—C23—C27 | 120.3 (1) |
C33—C32—H32 | 119.7 | C25—C24—C23 | 119.4 (1) |
C31—C32—H32 | 119.7 | C25—C24—H24 | 120.3 |
C34—C33—C32 | 119.8 (1) | C23—C24—H24 | 120.3 |
C34—C33—H33 | 120.1 | N26—C25—C24 | 124.2 (1) |
C32—C33—H33 | 120.1 | N26—C25—H25 | 117.9 |
C33—C34—C35 | 119.6 (1) | C24—C25—H25 | 117.9 |
C33—C34—H34 | 120.2 | C21—N26—C25 | 115.7 (1) |
C35—C34—H34 | 120.2 | C23—C27—H27A | 109.5 |
C34—C35—C36 | 122.3 (1) | C23—C27—H27B | 109.5 |
C34—C35—H35 | 118.9 | H27A—C27—H27B | 109.5 |
C36—C35—H35 | 118.9 | C23—C27—H27C | 109.5 |
C31—C36—C35 | 116.8 (1) | H27A—C27—H27C | 109.5 |
C31—C36—C46 | 124.0 (1) | H27B—C27—H27C | 109.5 |
C35—C36—C46 | 119.1 (1) | C52—C51—C56 | 120.0 |
C45—C46—C41 | 117.3 (1) | C52—C51—C50 | 119.7 (5) |
C45—C46—C36 | 118.8 (1) | C56—C51—C50 | 120.3 (5) |
C41—C46—C36 | 123.9 (1) | C51—C52—C53 | 120.0 |
C44—C45—C46 | 122.5 (1) | C51—C52—H52 | 120.0 |
C44—C45—H45 | 118.7 | C53—C52—H52 | 120.0 |
C46—C45—H45 | 118.7 | C52—C53—C54 | 120.0 |
C43—C44—C45 | 119.8 (1) | C52—C53—H53 | 120.0 |
C43—C44—H44 | 120.1 | C54—C53—H53 | 120.0 |
C45—C44—H44 | 120.1 | C55—C54—C53 | 120.0 |
C44—C43—C42 | 119.2 (1) | C55—C54—H54 | 120.0 |
C44—C43—H43 | 120.4 | C53—C54—H54 | 120.0 |
C42—C43—H43 | 120.4 | C56—C55—C54 | 120.0 |
C43—C42—C41 | 121.9 (1) | C56—C55—H55 | 120.0 |
C43—C42—H42 | 119.1 | C54—C55—H55 | 120.0 |
C41—C42—H42 | 119.1 | C55—C56—C51 | 120.0 |
C42—C41—C46 | 119.2 (1) | C55—C56—H56 | 120.0 |
C42—C41—N4 | 113.7 (1) | C51—C56—H56 | 120.0 |
C46—C41—N4 | 127.1 (1) | ||
O1—C1—C2—N4 | 178.5 (1) | C45—C46—C41—C42 | 2.6 (2) |
N2—C1—C2—N4 | −2.8 (2) | C36—C46—C41—C42 | −174.7 (1) |
O1—C1—C2—N3 | −4.9 (2) | C45—C46—C41—N4 | −177.9 (1) |
N2—C1—C2—N3 | 173.7 (1) | C36—C46—C41—N4 | 4.9 (2) |
N4—C2—N3—C31 | −44.4 (2) | N3—C2—N4—C41 | −9.1 (2) |
C1—C2—N3—C31 | 139.6 (1) | C1—C2—N4—C41 | 166.7 (1) |
C2—N3—C31—C32 | −132.8 (1) | C42—C41—N4—C2 | −149.2 (1) |
C2—N3—C31—C36 | 46.6 (2) | C46—C41—N4—C2 | 31.2 (2) |
C36—C31—C32—C33 | −0.5 (2) | O1—C1—N2—C21 | 6.7 (2) |
N3—C31—C32—C33 | 178.9 (1) | C2—C1—N2—C21 | −171.9 (1) |
C31—C32—C33—C34 | −0.9 (2) | C1—N2—C21—N26 | 160.4 (1) |
C32—C33—C34—C35 | 1.1 (2) | C1—N2—C21—C22 | −19.7 (2) |
C33—C34—C35—C36 | 0.1 (2) | N26—C21—C22—C23 | −0.5 (2) |
C32—C31—C36—C35 | 1.7 (2) | N2—C21—C22—C23 | 179.6 (1) |
N3—C31—C36—C35 | −177.7 (1) | C21—C22—C23—C24 | 0.0 (2) |
C32—C31—C36—C46 | −176.7 (1) | C21—C22—C23—C27 | 179.9 (1) |
N3—C31—C36—C46 | 3.9 (2) | C22—C23—C24—C25 | 0.3 (2) |
C34—C35—C36—C31 | −1.5 (2) | C27—C23—C24—C25 | −179.7 (1) |
C34—C35—C36—C46 | 177.0 (1) | C23—C24—C25—N26 | −0.1 (2) |
C31—C36—C46—C45 | 148.6 (1) | C22—C21—N26—C25 | 0.7 (2) |
C35—C36—C46—C45 | −29.8 (2) | N2—C21—N26—C25 | −179.4 (1) |
C31—C36—C46—C41 | −34.2 (2) | C24—C25—N26—C21 | −0.4 (2) |
C35—C36—C46—C41 | 147.5 (1) | C56—C51—C52—C53 | 0.0 |
C41—C46—C45—C44 | −1.1 (2) | C50—C51—C52—C53 | −179.4 (5) |
C36—C46—C45—C44 | 176.3 (1) | C51—C52—C53—C54 | 0.0 |
C46—C45—C44—C43 | −0.9 (2) | C52—C53—C54—C55 | 0.0 |
C45—C44—C43—C42 | 1.4 (2) | C53—C54—C55—C56 | 0.0 |
C44—C43—C42—C41 | 0.1 (2) | C54—C55—C56—C51 | 0.0 |
C43—C42—C41—C46 | −2.2 (2) | C52—C51—C56—C55 | 0.0 |
C43—C42—C41—N4 | 178.2 (1) | C50—C51—C56—C55 | 179.4 (5) |
D—H···A | D—H | H···A | D···A | D—H···A |
N3—H3···O1 | 0.88 (1) | 2.22 (1) | 2.677 (1) | 112 (1) |
N3—H3···O1i | 0.88 (1) | 2.31 (1) | 3.108 (1) | 151 (1) |
N2—H2···N4 | 0.87 (1) | 2.19 (1) | 2.644 (1) | 112 (1) |
Symmetry code: (i) −x, −y+1, −z+1. |
Experimental details
Crystal data | |
Chemical formula | C20H16N4O·0.5C7H8 |
Mr | 374.44 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 293 |
a, b, c (Å) | 8.9323 (2), 9.6863 (2), 12.1478 (3) |
α, β, γ (°) | 77.050 (1), 87.529 (1), 70.191 (1) |
V (Å3) | 963.08 (4) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 0.08 |
Crystal size (mm) | 0.29 × 0.21 × 0.15 |
Data collection | |
Diffractometer | Nonius KappaCCD |
Absorption correction | Multi-scan (DENZO and SCALEPACK; Otwinowski & Minor, 1997) |
Tmin, Tmax | 0.977, 0.988 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 17061, 8631, 5192 |
Rint | 0.000 |
(sin θ/λ)max (Å−1) | 0.648 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.052, 0.148, 1.02 |
No. of reflections | 8631 |
No. of parameters | 288 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.18, −0.18 |
Computer programs: COLLECT (Nonius, 2000), SCALEPACK (Otwinowski & Minor, 1997), SCALEPACK and DENZO (Otwinowski & Minor, 1997), SIR92 (Altomare et al., 1994), SHELXL97 (Sheldrick, 1997), ORTEP-3 (Farrugia, 1997).
D—H···A | D—H | H···A | D···A | D—H···A |
N3—H3···O1 | 0.88 (1) | 2.22 (1) | 2.677 (1) | 112 (1) |
N3—H3···O1i | 0.88 (1) | 2.31 (1) | 3.108 (1) | 151 (1) |
N2—H2···N4 | 0.87 (1) | 2.19 (1) | 2.644 (1) | 112 (1) |
Symmetry code: (i) −x, −y+1, −z+1. |
Benzodiazepines are one of the most important substances in medicinal chemistry, representing the prototypical 'privileged structure' (Evans et al. 1988). Compounds based on the diazepine skeleton are psychotherapeutic agents widely used for the treatment of anxiety and neurosis (Sternbach, 1978). The crystal structure analysis of N-(4-methylpyridin-2-yl)-5H-dibenzo[d,f][1,3] diazepine-6-carboxamide was performed to find out the influence of methyl substituent on molecular geometry and packing properties. The molecular structure of the title compound is shown in Fig. 1. The symmetrically independent part of the unit cell is composed of title compound molecule and disordered toluene molecule. The core of the diazepine molecule is composed of a seven-membered ring to which a pyridin-2-ylamino carbonyl substituent is attached and two benzene rings are fused. The puckering parameters of the seven-membered ring (atoms in N3, C2,···,C31 sequence): q2 = 0.5752, q3 = 0.0819, QT = 0.5810, φ2 = -6.33, φ3 = 10.46, θ2 = 81.89°, indicate a twisted-boat conformation with a pseudo-mirror plane (Cs) through the N3 atom and the centre of C41—C46 bond. From the chemical point of view there is also a pseudo 2-fold axis (C2) bisecting the diazepine ring through C2 and the center of C36–C46 bond. The bond lengths and valence angles are typical and comparable with the values reported in the literature (Allen et al. 1987). Two N atoms are involved in hydrogen bonds: two intra- and one intermolecular (Table 1). The intermolecular N3—H3···O1 [-x, 1 - y, 1 - z] interaction is relatively weak due to simultaneous donor participation in intramolecular interaction (bifurcated hydrogen bond). In addition, there are two types of π–π interactions, which assist in the stabilization of the three-dimensional-packing. The benzene ring C31···C36 is strictly parallel to another one in position [1 - x, 1 - y, 1 - z], with interplanar spacing of 3.556 Å, the ring-centroid separation of 3.883 Å and with ring offset of 1.560 Å. The pyridine ring is nearly parallel to another benzene ring C41···C46 of the molecule at [1 - x, - y, 1 - z]. The interplanar spacing is 3.651 Å, the corresponding ring-centroid separation is 3.790 Å, resulting in the offset of 1.017 Å. The π–π interaction are illustrated in Fig. 2. As it can be seen in Fig. 2, the solvent accessible cavities at 0, 1/2, 1 are filled with disordered toluene molecules which stabilized three-dimensional structure (total potential solvent area of 195.7 Å3 makes 20.3% of unit cell volume).