Supporting information
Crystallographic Information File (CIF) https://doi.org/10.1107/S1600536807048519/cf2151sup1.cif | |
Structure factor file (CIF format) https://doi.org/10.1107/S1600536807048519/cf2151Isup2.hkl |
CCDC reference: 667313
Key indicators
- Single-crystal X-ray study
- T = 293 K
- Mean (C-C) = 0.002 Å
- R factor = 0.045
- wR factor = 0.116
- Data-to-parameter ratio = 17.8
checkCIF/PLATON results
No syntax errors found
Alert level A DIFF020_ALERT_1_A _diffrn_standards_interval_count and _diffrn_standards_interval_time are missing. Number of measurements between standards or time (min) between standards.
Author Response: In the Kappa apex2 CCD diffractometer there is no provision for repeat measurement of standard intensity. Instead, the decay correction is achieved indirectly by noting the intensity of equivalent reflections and time of their measurement during the data collection. |
DIFF022_ALERT_1_A _diffrn_standards_decay_% is missing Percentage decrease in standards intensity.
Alert level C ABSTM02_ALERT_3_C The ratio of expected to reported Tmax/Tmin(RR') is < 0.90 Tmin and Tmax reported: 0.868 1.000 Tmin(prime) and Tmax expected: 0.983 0.985 RR(prime) = 0.870 Please check that your absorption correction is appropriate. PLAT061_ALERT_3_C Tmax/Tmin Range Test RR' too Large ............. 0.87 PLAT062_ALERT_4_C Rescale T(min) & T(max) by ..................... 0.99 PLAT420_ALERT_2_C D-H Without Acceptor N11 - H11 ... ?
Alert level G ABSTM02_ALERT_3_G When printed, the submitted absorption T values will be replaced by the scaled T values. Since the ratio of scaled T's is identical to the ratio of reported T values, the scaling does not imply a change to the absorption corrections used in the study. Ratio of Tmax expected/reported 0.985 Tmax scaled 0.985 Tmin scaled 0.855 PLAT199_ALERT_1_G Check the Reported _cell_measurement_temperature 293 K PLAT200_ALERT_1_G Check the Reported _diffrn_ambient_temperature . 293 K PLAT793_ALERT_1_G Check the Absolute Configuration of C2 = ... S
2 ALERT level A = In general: serious problem 0 ALERT level B = Potentially serious problem 4 ALERT level C = Check and explain 4 ALERT level G = General alerts; check 5 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 3 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
For related literature, see: Chananont et al. (1980); Gałdecki & Główka (1980); Gilli et al. (1978); Ponnuswamy et al. (2006).
The title compound was prepared and characterized using NMR techniques by Ponnuswamy et al., 2006.
Atoms H11 at N11 and H5 at N5 were located in a difference Fourier map and refined isotropically. Remaining H atoms were positioned geometrically and allowed to ride on their parent atoms with C—H = 0.93–0.98 Å and Uiso = 1.2–1.5 Ueq(parent atom).
Benzodiazepines are a class of psychotherapeutic drugs discovered at the end of the 1950 s and now widely used owing to their broad spectrum of biological activities. They are mainly used as tranquillizers but are also of interest for their muscle relaxant, anticonvulsant and sleep-induction effects (Gilli et al., 1978; Gałdecki & Główka, 1980; Chananont et al., 1980). The X-ray structure analysis of the title compound was carried out to determine the crystal structure as well as to study the substituent effects on the geometry and conformation of the diazepine ring.
The conformation of the title molecule was established by NMR spectroscopy and semiempirical MO calculations by Ponnuswamy et al. (2006). The title molecule, C19H23N3O, contains a benzene ring fused to a diazepine ring. The phenylcarbamoyl group is substituted at N1. The methyl groups are substituted at C2 and C4 as expected. The seven-membered diazepine ring has a boat conformation (Fig. 1). The phenylcarbamoyl group is coplanar with the C2—N1—C10 plane of the diazepine ring. The methyl group substituted on the C2 atom is in an equatorial position. The dihedral angle between the two benzene rings is 81.07 (9)°. An N—H···O intermolecular hydrogen bond exists between H5 (on N5 of the diazepine ring) and atom O1i [(i): -x + 1/2, y + 1/2, z] of the phenylcarbamoyl group (Fig. 2), forming an infinite one-dimensional chain, with base vector [010]. C—H···O type intramolecular interactions [C2—H2A···O1 and C116—H116···O1] are also present.
For related literature, see: Chananont et al. (1980); Gałdecki & Główka (1980); Gilli et al. (1978); Ponnuswamy et al. (2006).
Data collection: APEX2 (Bruker, 2004); cell refinement: APEX2 (Bruker, 2004); data reduction: SAINT-NT (Bruker, 2004); program(s) used to solve structure: SIR97 (Altomare et al., 1999); program(s) used to refine structure: SHELXL97 (Sheldrick, 1997); molecular graphics: ORTEP-3 (Farrugia, 1997); software used to prepare material for publication: PLATON (Spek, 2003).
C19H23N3O | Dx = 1.192 Mg m−3 |
Mr = 309.40 | Melting point: 440.5 K |
Orthorhombic, Pbca | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2ac 2ab | Cell parameters from 5251 reflections |
a = 6.6010 (1) Å | θ = 2.9–27.2° |
b = 13.8353 (2) Å | µ = 0.08 mm−1 |
c = 37.7572 (6) Å | T = 293 K |
V = 3448.25 (9) Å3 | Rectangular block, colourless |
Z = 8 | 0.22 × 0.20 × 0.20 mm |
F(000) = 1328 |
Bruker APEXII diffractometer | 3834 independent reflections |
Radiation source: fine-focus sealed tube | 2674 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.029 |
φ and ω scans | θmax = 27.2°, θmin = 2.9° |
Absorption correction: multi-scan (SADABS; Bruker, 2004) | h = −8→8 |
Tmin = 0.868, Tmax = 1.000 | k = −17→17 |
18554 measured reflections | l = −48→32 |
Refinement on F2 | Primary atom site location: structure-invariant direct methods |
Least-squares matrix: full | Secondary atom site location: difference Fourier map |
R[F2 > 2σ(F2)] = 0.045 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.116 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.03 | w = 1/[σ2(Fo2) + (0.0477P)2 + 0.7067P] where P = (Fo2 + 2Fc2)/3 |
3834 reflections | (Δ/σ)max < 0.001 |
216 parameters | Δρmax = 0.13 e Å−3 |
0 restraints | Δρmin = −0.18 e Å−3 |
C19H23N3O | V = 3448.25 (9) Å3 |
Mr = 309.40 | Z = 8 |
Orthorhombic, Pbca | Mo Kα radiation |
a = 6.6010 (1) Å | µ = 0.08 mm−1 |
b = 13.8353 (2) Å | T = 293 K |
c = 37.7572 (6) Å | 0.22 × 0.20 × 0.20 mm |
Bruker APEXII diffractometer | 3834 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2004) | 2674 reflections with I > 2σ(I) |
Tmin = 0.868, Tmax = 1.000 | Rint = 0.029 |
18554 measured reflections |
R[F2 > 2σ(F2)] = 0.045 | 0 restraints |
wR(F2) = 0.116 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.03 | Δρmax = 0.13 e Å−3 |
3834 reflections | Δρmin = −0.18 e Å−3 |
216 parameters |
Geometry. Bond distances, angles etc. have been calculated using the rounded fractional coordinates. All su's are estimated from the variances of the (full) variance-covariance matrix. The cell e.s.d.'s are taken into account in the estimation of distances, angles and torsion angles |
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 | ||
O1 | 0.25792 (18) | −0.14773 (7) | 0.13677 (3) | 0.0589 (4) | |
N1 | 0.51148 (18) | −0.03994 (8) | 0.14618 (3) | 0.0425 (4) | |
N5 | 0.4053 (2) | 0.15447 (10) | 0.15438 (4) | 0.0519 (5) | |
N11 | 0.3963 (2) | −0.06939 (10) | 0.08966 (3) | 0.0505 (4) | |
C1 | 0.3802 (2) | −0.08931 (9) | 0.12488 (4) | 0.0425 (4) | |
C2 | 0.4970 (3) | −0.05268 (10) | 0.18463 (4) | 0.0475 (5) | |
C3 | 0.5002 (2) | 0.04477 (10) | 0.20331 (4) | 0.0453 (5) | |
C4 | 0.3515 (2) | 0.12114 (10) | 0.19023 (4) | 0.0440 (5) | |
C6 | 0.7016 (2) | 0.20114 (10) | 0.12087 (4) | 0.0477 (5) | |
C7 | 0.8697 (3) | 0.17729 (12) | 0.10145 (4) | 0.0557 (6) | |
C8 | 0.9295 (3) | 0.08264 (12) | 0.09829 (4) | 0.0552 (5) | |
C9 | 0.8157 (2) | 0.01174 (11) | 0.11412 (4) | 0.0472 (5) | |
C10 | 0.6412 (2) | 0.03434 (9) | 0.13268 (4) | 0.0378 (4) | |
C11 | 0.5825 (2) | 0.13084 (9) | 0.13702 (4) | 0.0371 (4) | |
C21 | 0.6649 (3) | −0.11839 (12) | 0.19792 (5) | 0.0736 (7) | |
C41 | 0.1354 (3) | 0.08303 (14) | 0.18925 (5) | 0.0658 (6) | |
C42 | 0.3633 (3) | 0.20749 (12) | 0.21531 (5) | 0.0658 (7) | |
C111 | 0.2814 (2) | −0.10638 (11) | 0.06149 (4) | 0.0470 (5) | |
C112 | 0.2901 (3) | −0.05737 (14) | 0.02975 (5) | 0.0650 (6) | |
C113 | 0.1836 (3) | −0.08972 (18) | 0.00075 (5) | 0.0837 (9) | |
C114 | 0.0668 (3) | −0.1704 (2) | 0.00327 (6) | 0.0902 (9) | |
C115 | 0.0577 (3) | −0.21940 (17) | 0.03451 (6) | 0.0848 (8) | |
C116 | 0.1655 (3) | −0.18920 (13) | 0.06388 (5) | 0.0630 (6) | |
H2A | 0.36710 | −0.08385 | 0.18984 | 0.0569* | |
H3A | 0.47418 | 0.03381 | 0.22827 | 0.0544* | |
H3B | 0.63591 | 0.07108 | 0.20134 | 0.0544* | |
H5 | 0.365 (3) | 0.2120 (15) | 0.1507 (5) | 0.081 (6)* | |
H6 | 0.66626 | 0.26586 | 0.12332 | 0.0573* | |
H7 | 0.94391 | 0.22565 | 0.09030 | 0.0668* | |
H8 | 1.04558 | 0.06678 | 0.08560 | 0.0662* | |
H9 | 0.85644 | −0.05242 | 0.11234 | 0.0567* | |
H11 | 0.481 (3) | −0.0247 (12) | 0.0847 (4) | 0.061 (5)* | |
H21A | 0.65873 | −0.17909 | 0.18565 | 0.1104* | |
H21B | 0.79383 | −0.08849 | 0.19364 | 0.1104* | |
H21C | 0.64823 | −0.12913 | 0.22287 | 0.1104* | |
H41A | 0.04631 | 0.13292 | 0.18092 | 0.0987* | |
H41B | 0.12831 | 0.02847 | 0.17359 | 0.0987* | |
H41C | 0.09530 | 0.06365 | 0.21264 | 0.0987* | |
H42A | 0.49968 | 0.23151 | 0.21591 | 0.0987* | |
H42B | 0.27407 | 0.25752 | 0.20712 | 0.0987* | |
H42C | 0.32350 | 0.18774 | 0.23867 | 0.0987* | |
H112 | 0.36869 | −0.00182 | 0.02792 | 0.0780* | |
H113 | 0.19159 | −0.05639 | −0.02060 | 0.1004* | |
H114 | −0.00641 | −0.19204 | −0.01623 | 0.1080* | |
H115 | −0.02290 | −0.27437 | 0.03612 | 0.1018* | |
H116 | 0.16011 | −0.22410 | 0.08491 | 0.0755* |
U11 | U22 | U33 | U12 | U13 | U23 | |
O1 | 0.0731 (8) | 0.0487 (6) | 0.0549 (7) | −0.0256 (6) | −0.0001 (6) | 0.0033 (5) |
N1 | 0.0550 (7) | 0.0340 (6) | 0.0385 (7) | −0.0098 (5) | −0.0033 (6) | 0.0035 (5) |
N5 | 0.0586 (9) | 0.0495 (8) | 0.0476 (8) | 0.0184 (7) | 0.0105 (6) | 0.0130 (6) |
N11 | 0.0569 (8) | 0.0520 (7) | 0.0425 (8) | −0.0177 (7) | −0.0036 (6) | 0.0001 (6) |
C1 | 0.0514 (9) | 0.0317 (6) | 0.0445 (8) | −0.0032 (6) | −0.0021 (7) | −0.0005 (6) |
C2 | 0.0627 (10) | 0.0402 (7) | 0.0395 (8) | −0.0070 (7) | −0.0047 (8) | 0.0077 (6) |
C3 | 0.0557 (9) | 0.0459 (8) | 0.0343 (8) | −0.0041 (7) | −0.0057 (7) | 0.0038 (6) |
C4 | 0.0474 (8) | 0.0490 (8) | 0.0357 (8) | 0.0008 (7) | 0.0006 (7) | −0.0004 (6) |
C6 | 0.0611 (10) | 0.0353 (7) | 0.0468 (9) | −0.0069 (7) | −0.0017 (8) | 0.0012 (6) |
C7 | 0.0558 (10) | 0.0571 (10) | 0.0542 (10) | −0.0199 (8) | 0.0039 (8) | 0.0053 (8) |
C8 | 0.0429 (8) | 0.0692 (10) | 0.0534 (10) | −0.0027 (8) | 0.0075 (8) | −0.0020 (8) |
C9 | 0.0500 (9) | 0.0423 (8) | 0.0494 (9) | 0.0061 (7) | −0.0009 (7) | −0.0048 (7) |
C10 | 0.0415 (8) | 0.0345 (6) | 0.0373 (8) | −0.0037 (6) | −0.0043 (6) | 0.0010 (6) |
C11 | 0.0415 (8) | 0.0348 (7) | 0.0350 (7) | −0.0005 (6) | −0.0029 (6) | 0.0031 (5) |
C21 | 0.1081 (16) | 0.0491 (9) | 0.0635 (12) | 0.0131 (10) | −0.0160 (11) | 0.0123 (8) |
C41 | 0.0509 (10) | 0.0903 (12) | 0.0562 (11) | −0.0045 (9) | 0.0035 (9) | 0.0037 (10) |
C42 | 0.0811 (13) | 0.0586 (10) | 0.0577 (11) | 0.0095 (9) | −0.0019 (10) | −0.0114 (8) |
C111 | 0.0423 (8) | 0.0542 (9) | 0.0446 (9) | 0.0022 (7) | −0.0024 (7) | −0.0113 (7) |
C112 | 0.0717 (12) | 0.0752 (11) | 0.0481 (10) | −0.0008 (10) | −0.0028 (9) | −0.0062 (9) |
C113 | 0.0843 (15) | 0.1195 (18) | 0.0473 (11) | 0.0095 (14) | −0.0113 (10) | −0.0109 (12) |
C114 | 0.0669 (13) | 0.140 (2) | 0.0637 (14) | −0.0025 (14) | −0.0154 (11) | −0.0363 (14) |
C115 | 0.0680 (13) | 0.1096 (16) | 0.0768 (15) | −0.0270 (12) | −0.0058 (11) | −0.0325 (13) |
C116 | 0.0581 (10) | 0.0719 (11) | 0.0589 (11) | −0.0140 (9) | −0.0041 (9) | −0.0146 (9) |
O1—C1 | 1.2273 (17) | C6—H6 | 0.930 |
N1—C1 | 1.3654 (18) | C7—H7 | 0.930 |
N1—C2 | 1.4656 (19) | C8—H8 | 0.930 |
N1—C10 | 1.4315 (17) | C9—H9 | 0.930 |
N5—C4 | 1.473 (2) | C111—C116 | 1.381 (2) |
N5—C11 | 1.3801 (19) | C111—C112 | 1.378 (2) |
N11—C1 | 1.3622 (19) | C112—C113 | 1.376 (3) |
N11—C111 | 1.4030 (19) | C113—C114 | 1.360 (3) |
N5—H5 | 0.85 (2) | C114—C115 | 1.362 (3) |
N11—H11 | 0.854 (18) | C115—C116 | 1.382 (3) |
C2—C21 | 1.519 (3) | C21—H21A | 0.960 |
C2—C3 | 1.522 (2) | C21—H21B | 0.960 |
C3—C4 | 1.5244 (19) | C21—H21C | 0.960 |
C4—C41 | 1.521 (2) | C41—H41A | 0.960 |
C4—C42 | 1.526 (2) | C41—H41B | 0.960 |
C6—C11 | 1.3914 (19) | C41—H41C | 0.960 |
C6—C7 | 1.370 (2) | C42—H42A | 0.960 |
C7—C8 | 1.373 (2) | C42—H42B | 0.960 |
C8—C9 | 1.373 (2) | C42—H42C | 0.960 |
C9—C10 | 1.3841 (19) | C112—H112 | 0.930 |
C10—C11 | 1.3998 (18) | C113—H113 | 0.930 |
C2—H2A | 0.980 | C114—H114 | 0.930 |
C3—H3A | 0.970 | C115—H115 | 0.930 |
C3—H3B | 0.970 | C116—H116 | 0.930 |
O1···C116 | 2.877 (2) | H3B···C10 | 2.640 |
O1···N5i | 3.0153 (17) | H3B···C11 | 2.590 |
O1···H2A | 2.310 | H3B···H21B | 2.460 |
O1···H116 | 2.320 | H3B···H42A | 2.460 |
O1···H5i | 2.17 (2) | H5···H6 | 2.360 |
N1···N5 | 2.7967 (18) | H5···H42B | 2.300 |
N1···C41 | 3.421 (2) | H5···O1ii | 2.17 (2) |
N5···N1 | 2.7967 (18) | H6···H5 | 2.360 |
N5···O1ii | 3.0153 (17) | H6···H9iv | 2.550 |
N11···C9 | 3.1269 (19) | H7···C1iv | 3.100 |
N1···H41B | 2.890 | H7···C116iv | 3.010 |
C6···C116ii | 3.578 (2) | H8···C111vi | 3.000 |
C9···N11 | 3.1269 (19) | H9···H6iii | 2.550 |
C41···N1 | 3.421 (2) | H11···C9 | 2.524 (19) |
C1···H41B | 2.970 | H11···C10 | 2.251 (16) |
C1···H116 | 2.800 | H11···C11 | 2.997 (16) |
C1···H7iii | 3.100 | H11···H112 | 2.290 |
C2···H41B | 2.710 | H21A···C6iii | 3.090 |
C6···H21Aiv | 3.090 | H21B···C10 | 3.030 |
C6···H116ii | 2.930 | H21B···H3B | 2.460 |
C8···H113v | 3.060 | H21C···H3A | 2.540 |
C9···H41Bvi | 3.060 | H41A···H42B | 2.490 |
C9···H11 | 2.524 (19) | H41B···N1 | 2.890 |
C10···H3B | 2.640 | H41B···C1 | 2.970 |
C10···H11 | 2.251 (16) | H41B···C2 | 2.710 |
C10···H21B | 3.030 | H41B···C9viii | 3.060 |
C11···H3B | 2.590 | H41B···H2A | 2.300 |
C11···H11 | 2.997 (16) | H41C···H42C | 2.490 |
C113···C113vii | 3.470 (3) | H41C···H3Axi | 2.410 |
C116···O1 | 2.877 (2) | H42A···H3B | 2.460 |
C116···C6i | 3.578 (2) | H42B···H5 | 2.300 |
C41···H2A | 2.770 | H42B···H41A | 2.490 |
C111···H8viii | 3.000 | H42B···H2Aii | 2.470 |
C113···H115ix | 3.040 | H42C···H3A | 2.380 |
C116···H7iii | 3.010 | H42C···H41C | 2.490 |
H2A···O1 | 2.310 | H112···H11 | 2.290 |
H2A···C41 | 2.770 | H113···C8v | 3.060 |
H2A···H41B | 2.300 | H115···C113xii | 3.040 |
H2A···H42Bi | 2.470 | H116···O1 | 2.320 |
H3A···H21C | 2.540 | H116···C1 | 2.800 |
H3A···H42C | 2.380 | H116···C6i | 2.930 |
H3A···H41Cx | 2.410 | ||
C1—N1—C2 | 118.81 (12) | C6—C7—H7 | 120.0 |
C1—N1—C10 | 121.94 (12) | C8—C7—H7 | 120.0 |
C2—N1—C10 | 118.56 (12) | C9—C8—H8 | 120.0 |
C4—N5—C11 | 124.50 (13) | C7—C8—H8 | 120.0 |
C1—N11—C111 | 128.62 (13) | C8—C9—H9 | 120.0 |
C4—N5—H5 | 111.6 (13) | C10—C9—H9 | 120.0 |
C11—N5—H5 | 114.2 (13) | N11—C111—C112 | 117.21 (14) |
C1—N11—H11 | 114.3 (10) | C112—C111—C116 | 119.23 (15) |
C111—N11—H11 | 116.8 (10) | N11—C111—C116 | 123.55 (15) |
N1—C1—N11 | 115.10 (12) | C111—C112—C113 | 120.71 (18) |
O1—C1—N1 | 122.10 (14) | C112—C113—C114 | 120.06 (19) |
O1—C1—N11 | 122.79 (13) | C113—C114—C115 | 119.6 (2) |
C3—C2—C21 | 111.54 (14) | C114—C115—C116 | 121.5 (2) |
N1—C2—C21 | 110.59 (14) | C111—C116—C115 | 118.93 (17) |
N1—C2—C3 | 110.59 (11) | C2—C21—H21A | 109.0 |
C2—C3—C4 | 117.07 (13) | C2—C21—H21B | 109.0 |
N5—C4—C3 | 111.06 (12) | C2—C21—H21C | 109.0 |
N5—C4—C41 | 108.19 (13) | H21A—C21—H21B | 109.0 |
N5—C4—C42 | 108.22 (12) | H21A—C21—H21C | 109.0 |
C3—C4—C41 | 111.80 (12) | H21B—C21—H21C | 109.0 |
C3—C4—C42 | 107.98 (13) | C4—C41—H41A | 109.0 |
C41—C4—C42 | 109.52 (13) | C4—C41—H41B | 109.0 |
C7—C6—C11 | 121.58 (13) | C4—C41—H41C | 109.0 |
C6—C7—C8 | 120.60 (16) | H41A—C41—H41B | 109.0 |
C7—C8—C9 | 119.11 (16) | H41A—C41—H41C | 109.0 |
C8—C9—C10 | 120.97 (14) | H41B—C41—H41C | 109.0 |
C9—C10—C11 | 120.34 (13) | C4—C42—H42A | 109.0 |
N1—C10—C9 | 121.06 (12) | C4—C42—H42B | 109.0 |
N1—C10—C11 | 118.52 (12) | C4—C42—H42C | 109.0 |
N5—C11—C10 | 121.07 (12) | H42A—C42—H42B | 109.0 |
C6—C11—C10 | 117.32 (13) | H42A—C42—H42C | 109.0 |
N5—C11—C6 | 121.43 (12) | H42B—C42—H42C | 109.0 |
C21—C2—H2A | 108.0 | C111—C112—H112 | 120.0 |
N1—C2—H2A | 108.0 | C113—C112—H112 | 120.0 |
C3—C2—H2A | 108.0 | C112—C113—H113 | 120.0 |
C2—C3—H3A | 108.0 | C114—C113—H113 | 120.0 |
C2—C3—H3B | 108.0 | C113—C114—H114 | 120.0 |
C4—C3—H3A | 108.0 | C115—C114—H114 | 120.0 |
C4—C3—H3B | 108.0 | C114—C115—H115 | 119.0 |
H3A—C3—H3B | 107.0 | C116—C115—H115 | 119.0 |
C7—C6—H6 | 119.0 | C111—C116—H116 | 121.0 |
C11—C6—H6 | 119.0 | C115—C116—H116 | 121.0 |
C2—N1—C1—O1 | −3.9 (2) | C2—C3—C4—C42 | 173.30 (13) |
C10—N1—C1—O1 | −174.28 (12) | C2—C3—C4—N5 | −68.20 (16) |
C2—N1—C1—N11 | 176.52 (12) | C2—C3—C4—C41 | 52.76 (18) |
C10—N1—C1—N11 | 6.17 (18) | C7—C6—C11—C10 | 0.0 (2) |
C2—N1—C10—C9 | 112.01 (16) | C11—C6—C7—C8 | −2.1 (2) |
C1—N1—C10—C11 | 99.09 (16) | C7—C6—C11—N5 | −175.22 (15) |
C1—N1—C2—C3 | −132.63 (13) | C6—C7—C8—C9 | 1.6 (2) |
C10—N1—C2—C3 | 38.05 (19) | C7—C8—C9—C10 | 0.9 (2) |
C1—N1—C2—C21 | 103.31 (16) | C8—C9—C10—C11 | −3.0 (2) |
C10—N1—C2—C21 | −86.01 (15) | C8—C9—C10—N1 | 173.69 (14) |
C1—N1—C10—C9 | −77.61 (18) | N1—C10—C11—C6 | −174.28 (13) |
C2—N1—C10—C11 | −71.29 (18) | C9—C10—C11—N5 | 177.72 (14) |
C4—N5—C11—C10 | 53.8 (2) | C9—C10—C11—C6 | 2.4 (2) |
C11—N5—C4—C3 | −8.98 (19) | N1—C10—C11—N5 | 1.0 (2) |
C11—N5—C4—C42 | 109.37 (16) | N11—C111—C112—C113 | 179.24 (17) |
C4—N5—C11—C6 | −131.10 (16) | C116—C111—C112—C113 | 0.5 (3) |
C11—N5—C4—C41 | −132.04 (15) | N11—C111—C116—C115 | 179.94 (16) |
C1—N11—C111—C116 | −17.8 (2) | C112—C111—C116—C115 | −1.4 (3) |
C111—N11—C1—N1 | −178.55 (13) | C111—C112—C113—C114 | 0.6 (3) |
C111—N11—C1—O1 | 1.9 (2) | C112—C113—C114—C115 | −0.7 (3) |
C1—N11—C111—C112 | 163.52 (16) | C113—C114—C115—C116 | −0.3 (3) |
N1—C2—C3—C4 | 51.20 (19) | C114—C115—C116—C111 | 1.3 (3) |
C21—C2—C3—C4 | 174.72 (13) |
Symmetry codes: (i) −x+1/2, y−1/2, z; (ii) −x+1/2, y+1/2, z; (iii) −x+3/2, y−1/2, z; (iv) −x+3/2, y+1/2, z; (v) −x+1, −y, −z; (vi) x+1, y, z; (vii) −x, −y, −z; (viii) x−1, y, z; (ix) x+1/2, −y−1/2, −z; (x) x+1/2, y, −z+1/2; (xi) x−1/2, y, −z+1/2; (xii) x−1/2, −y−1/2, −z. |
D—H···A | D—H | H···A | D···A | D—H···A |
N5—H5···O1ii | 0.85 (2) | 2.17 (2) | 3.0153 (17) | 174 (2) |
C2—H2A···O1 | 0.98 | 2.31 | 2.736 (2) | 106 |
C116—H116···O1 | 0.93 | 2.32 | 2.877 (2) | 118 |
Symmetry code: (ii) −x+1/2, y+1/2, z. |
Experimental details
Crystal data | |
Chemical formula | C19H23N3O |
Mr | 309.40 |
Crystal system, space group | Orthorhombic, Pbca |
Temperature (K) | 293 |
a, b, c (Å) | 6.6010 (1), 13.8353 (2), 37.7572 (6) |
V (Å3) | 3448.25 (9) |
Z | 8 |
Radiation type | Mo Kα |
µ (mm−1) | 0.08 |
Crystal size (mm) | 0.22 × 0.20 × 0.20 |
Data collection | |
Diffractometer | Bruker APEXII |
Absorption correction | Multi-scan (SADABS; Bruker, 2004) |
Tmin, Tmax | 0.868, 1.000 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 18554, 3834, 2674 |
Rint | 0.029 |
(sin θ/λ)max (Å−1) | 0.644 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.045, 0.116, 1.03 |
No. of reflections | 3834 |
No. of parameters | 216 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.13, −0.18 |
Computer programs: APEX2 (Bruker, 2004), SAINT-NT (Bruker, 2004), SIR97 (Altomare et al., 1999), SHELXL97 (Sheldrick, 1997), ORTEP-3 (Farrugia, 1997), PLATON (Spek, 2003).
D—H···A | D—H | H···A | D···A | D—H···A |
N5—H5···O1i | 0.85 (2) | 2.17 (2) | 3.0153 (17) | 174 (2) |
C2—H2A···O1 | 0.98 | 2.31 | 2.736 (2) | 106 |
C116—H116···O1 | 0.93 | 2.32 | 2.877 (2) | 118 |
Symmetry code: (i) −x+1/2, y+1/2, z. |
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Benzodiazepines are a class of psychotherapeutic drugs discovered at the end of the 1950 s and now widely used owing to their broad spectrum of biological activities. They are mainly used as tranquillizers but are also of interest for their muscle relaxant, anticonvulsant and sleep-induction effects (Gilli et al., 1978; Gałdecki & Główka, 1980; Chananont et al., 1980). The X-ray structure analysis of the title compound was carried out to determine the crystal structure as well as to study the substituent effects on the geometry and conformation of the diazepine ring.
The conformation of the title molecule was established by NMR spectroscopy and semiempirical MO calculations by Ponnuswamy et al. (2006). The title molecule, C19H23N3O, contains a benzene ring fused to a diazepine ring. The phenylcarbamoyl group is substituted at N1. The methyl groups are substituted at C2 and C4 as expected. The seven-membered diazepine ring has a boat conformation (Fig. 1). The phenylcarbamoyl group is coplanar with the C2—N1—C10 plane of the diazepine ring. The methyl group substituted on the C2 atom is in an equatorial position. The dihedral angle between the two benzene rings is 81.07 (9)°. An N—H···O intermolecular hydrogen bond exists between H5 (on N5 of the diazepine ring) and atom O1i [(i): -x + 1/2, y + 1/2, z] of the phenylcarbamoyl group (Fig. 2), forming an infinite one-dimensional chain, with base vector [010]. C—H···O type intramolecular interactions [C2—H2A···O1 and C116—H116···O1] are also present.