organic compounds
5-Chloro-1-[(E)-3-(dimethylamino)acryloyl]-3-methyl-1H-benzimidazol-2(3H)-one–6-chloro-1-[(E)-3-(dimethylamino)acryloyl]-3-methyl-1H-benzimidazol-2(3H)-one (4/1)
aLaboratoire de Chimie Organique Appliquée, Faculté des Sciences et Techniques, Université Sidi Mohamed Ben Abdallah, Fés, Morocco, bService Commun Rayons-X FR2599, Université Paul Sabatier Bâtiment 2R1, 118 route de Narbonne, Toulouse, France, cLaboratoire de Chimie Organique Hétérocyclique, Pôle de Compétences Pharmacochimie, Université Mohammed V-Agdal, BP 1014 Avenue Ibn Batout, Rabat, Morocco, and dDepartment of Chemistry, University of Malaya, 50603 Kuala Lumpur, Malaysia
*Correspondence e-mail: seikweng@um.edu.my
In the reaction of 7-chloro-1,5-benzodiazepine-2,4-dione with N,N-dimethylformamide/dimethylacetal, the diazepine seven-membered ring undergoes a contraction to form the five-membered ring. The reaction yields two isomers the title compound, C13H14ClN3O2; the major component has the chlorine-atom substituent in the 5-position of the benzimidazolone ring and the minor component has the chlorine atom in the 6-position. The two isomers form a disordered the chloromethylbenzimidazolone portion of both components are disordered with respect to each other in a 4:1 ratio [the refined ratio is 0.816 (5):0.184 (5)]; the dimethylaminocryloyl substitutent is ordered. The double bond of the dimethylaminoacryloyl substituent has an E configuration.
Related literature
For the structure of the 7-chloro-1,5-benzodiazepine-2,4-dione reactant, see: Mondieig et al. (2007).
Experimental
Crystal data
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Data collection: APEX2 (Bruker, 2005); cell SAINT (Bruker, 2005); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: X-SEED (Barbour, 2001); software used to prepare material for publication: publCIF (Westrip, 2010).
Supporting information
10.1107/S1600536811024706/xu5248sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536811024706/xu5248Isup2.hkl
Supporting information file. DOI: 10.1107/S1600536811024706/xu5248Isup3.cml
7-Chloro-1,5-benzodiazepine-2,4-dione (0.2 g. 0.95 mmol) in N,N-dimethylformamide-dimethylacetal (2.25 ml) was heated at 373 K for 4 h. The solid was collected and washed with cold dichloromethane. The brown product was recrystallized from petroleum ether.
Carbon-bound H-atoms were placed in calculated positions (C—H 0.93–0.97 Å) and were included in the
in the riding model approximation, with U(H) set to 1.2–1.5U(C).The chloro-3-methylbenzimidazol-2-one portion is disordered over two positions so that this portion is composed of a 5-chloro-3-methylbenzimidazol-2-one component and a 6-chloro-3-methylbenzimidazol-2-one. The occupancy refined to an 0.816 (5): 0.184 ratio.
The benzene ring was refined as a rigid hexagon of 1.39 Å sides. Pairs of bond lengths (C–Cl, C–N and C–O) were restrained to within 0.01 Å of each other. The temperature factors of the primed atoms were set to those of the unprimed ones, and the anisotropic temperature factors were restrained to be nearly isotropic.
Data collection: APEX2 (Bruker, 2005); cell
SAINT (Bruker, 2005); data reduction: SAINT (Bruker, 2005); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: X-SEED (Barbour, 2001); software used to prepare material for publication: publCIF (Westrip, 2010).C13H14ClN3O2 | F(000) = 1168 |
Mr = 279.72 | Dx = 1.413 Mg m−3 |
Orthorhombic, Pbca | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2ac 2ab | Cell parameters from 5721 reflections |
a = 7.3145 (2) Å | θ = 2.9–26.2° |
b = 14.2903 (3) Å | µ = 0.29 mm−1 |
c = 25.1512 (6) Å | T = 293 K |
V = 2628.96 (11) Å3 | Plate, brown |
Z = 8 | 0.30 × 0.25 × 0.05 mm |
Bruker APEXII diffractometer | 2684 independent reflections |
Radiation source: fine-focus sealed tube | 2103 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.053 |
ϕ and ω scans | θmax = 26.4°, θmin = 4.0° |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | h = −8→9 |
Tmin = 0.918, Tmax = 0.986 | k = −14→17 |
32296 measured reflections | l = −31→31 |
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)] = 0.067 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.204 | H-atom parameters constrained |
S = 1.15 | w = 1/[σ2(Fo2) + (0.092P)2 + 3.0624P] where P = (Fo2 + 2Fc2)/3 |
2684 reflections | (Δ/σ)max = 0.001 |
189 parameters | Δρmax = 0.35 e Å−3 |
82 restraints | Δρmin = −0.45 e Å−3 |
C13H14ClN3O2 | V = 2628.96 (11) Å3 |
Mr = 279.72 | Z = 8 |
Orthorhombic, Pbca | Mo Kα radiation |
a = 7.3145 (2) Å | µ = 0.29 mm−1 |
b = 14.2903 (3) Å | T = 293 K |
c = 25.1512 (6) Å | 0.30 × 0.25 × 0.05 mm |
Bruker APEXII diffractometer | 2684 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | 2103 reflections with I > 2σ(I) |
Tmin = 0.918, Tmax = 0.986 | Rint = 0.053 |
32296 measured reflections |
R[F2 > 2σ(F2)] = 0.067 | 82 restraints |
wR(F2) = 0.204 | H-atom parameters constrained |
S = 1.15 | Δρmax = 0.35 e Å−3 |
2684 reflections | Δρmin = −0.45 e Å−3 |
189 parameters |
x | y | z | Uiso*/Ueq | Occ. (<1) | |
Cl1 | 0.52676 (17) | 0.77941 (8) | 0.11089 (4) | 0.0493 (4) | 0.816 (5) |
O1 | 0.5389 (12) | 0.7581 (9) | 0.4050 (3) | 0.0492 (11) | 0.816 (5) |
N1 | 0.5117 (6) | 0.8034 (3) | 0.31659 (15) | 0.0341 (8) | 0.816 (5) |
N2 | 0.6106 (9) | 0.6599 (2) | 0.33224 (15) | 0.0335 (8) | 0.816 (5) |
C1 | 0.6049 (4) | 0.67203 (15) | 0.27723 (8) | 0.0252 (8) | 0.816 (5) |
C2 | 0.6483 (5) | 0.61571 (14) | 0.23398 (10) | 0.0316 (8) | 0.816 (5) |
H2 | 0.6929 | 0.5555 | 0.2394 | 0.038* | 0.816 (5) |
C3 | 0.6252 (5) | 0.64935 (17) | 0.18256 (9) | 0.0372 (9) | 0.816 (5) |
H3 | 0.6543 | 0.6117 | 0.1536 | 0.045* | 0.816 (5) |
C4 | 0.5586 (6) | 0.73931 (19) | 0.17439 (9) | 0.0376 (10) | 0.816 (5) |
C5 | 0.5152 (5) | 0.79563 (15) | 0.21764 (11) | 0.0349 (10) | 0.816 (5) |
H5 | 0.4706 | 0.8558 | 0.2122 | 0.042* | 0.816 (5) |
C6 | 0.5383 (4) | 0.76199 (15) | 0.26906 (10) | 0.0286 (8) | 0.816 (5) |
C7 | 0.4443 (8) | 0.8980 (3) | 0.32573 (18) | 0.0418 (12) | 0.816 (5) |
H7A | 0.3302 | 0.9063 | 0.3074 | 0.063* | 0.816 (5) |
H7B | 0.5318 | 0.9424 | 0.3126 | 0.063* | 0.816 (5) |
H7C | 0.4264 | 0.9076 | 0.3631 | 0.063* | 0.816 (5) |
C8 | 0.5526 (9) | 0.7426 (3) | 0.3577 (2) | 0.0367 (10) | 0.816 (5) |
Cl1' | 0.6682 (7) | 0.6174 (3) | 0.13514 (17) | 0.0493 (4) | 0.184 |
O1' | 0.532 (5) | 0.766 (5) | 0.4135 (13) | 0.0492 (11) | 0.184 |
N1' | 0.500 (3) | 0.8135 (16) | 0.3296 (7) | 0.0341 (8) | 0.184 |
N2' | 0.609 (4) | 0.6657 (9) | 0.3400 (7) | 0.0335 (8) | 0.184 |
C1' | 0.588 (2) | 0.6955 (10) | 0.2875 (4) | 0.0252 (8) | 0.184 |
C2' | 0.632 (3) | 0.6387 (9) | 0.2445 (6) | 0.0316 (8) | 0.184 |
H2' | 0.6760 | 0.5785 | 0.2502 | 0.038* | 0.184 (5) |
C3' | 0.609 (3) | 0.6718 (12) | 0.1930 (5) | 0.0372 (9) | 0.184 |
C4' | 0.542 (3) | 0.7617 (13) | 0.1845 (5) | 0.0376 (10) | 0.184 |
H4' | 0.5271 | 0.7839 | 0.1500 | 0.045* | 0.184 (5) |
C5' | 0.499 (3) | 0.8186 (9) | 0.2275 (7) | 0.0349 (10) | 0.184 |
H5' | 0.4549 | 0.8787 | 0.2218 | 0.042* | 0.184 (5) |
C6' | 0.5221 (18) | 0.7855 (9) | 0.2790 (5) | 0.0286 (8) | 0.184 |
C7' | 0.431 (4) | 0.9061 (17) | 0.3435 (11) | 0.0418 (12) | 0.184 |
H7'A | 0.4976 | 0.9528 | 0.3241 | 0.063* | 0.184 (5) |
H7'B | 0.4466 | 0.9163 | 0.3810 | 0.063* | 0.184 (5) |
H7'C | 0.3036 | 0.9100 | 0.3347 | 0.063* | 0.184 (5) |
C8' | 0.548 (3) | 0.7466 (13) | 0.3669 (11) | 0.0367 (10) | 0.184 |
O2 | 0.6605 (4) | 0.50518 (15) | 0.32831 (9) | 0.0496 (7) | |
N3 | 0.7521 (4) | 0.4747 (2) | 0.48942 (11) | 0.0491 (8) | |
C9 | 0.6537 (4) | 0.5735 (2) | 0.35780 (13) | 0.0369 (8) | |
C10 | 0.6877 (4) | 0.5726 (2) | 0.41357 (13) | 0.0385 (8) | |
H10 | 0.6848 | 0.6278 | 0.4331 | 0.046* | |
C11 | 0.7244 (5) | 0.4893 (2) | 0.43769 (13) | 0.0419 (8) | |
H11 | 0.7309 | 0.4371 | 0.4157 | 0.050* | |
C12 | 0.7832 (7) | 0.3809 (3) | 0.51016 (17) | 0.0679 (13) | |
H12A | 0.7952 | 0.3377 | 0.4811 | 0.102* | |
H12B | 0.6816 | 0.3627 | 0.5320 | 0.102* | |
H12C | 0.8931 | 0.3803 | 0.5310 | 0.102* | |
C13 | 0.7423 (6) | 0.5493 (3) | 0.52792 (14) | 0.0616 (11) | |
H13A | 0.6539 | 0.5948 | 0.5165 | 0.092* | |
H13B | 0.8599 | 0.5786 | 0.5311 | 0.092* | |
H13C | 0.7064 | 0.5243 | 0.5618 | 0.092* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Cl1 | 0.0640 (7) | 0.0447 (6) | 0.0391 (6) | −0.0008 (5) | 0.0014 (5) | 0.0036 (4) |
O1 | 0.0615 (18) | 0.041 (3) | 0.045 (3) | 0.0082 (17) | 0.0003 (18) | −0.012 (2) |
N1 | 0.0370 (16) | 0.0230 (17) | 0.042 (2) | 0.0014 (12) | 0.0022 (15) | −0.0035 (15) |
N2 | 0.0343 (14) | 0.0272 (13) | 0.0391 (18) | −0.0006 (12) | −0.0039 (15) | −0.0031 (12) |
C1 | 0.0230 (15) | 0.0169 (17) | 0.0357 (18) | −0.0020 (14) | 0.0010 (14) | −0.0065 (14) |
C2 | 0.0322 (18) | 0.0241 (19) | 0.039 (2) | −0.0012 (16) | −0.0007 (16) | −0.0060 (14) |
C3 | 0.038 (2) | 0.036 (2) | 0.038 (2) | −0.0052 (18) | 0.0046 (17) | −0.0077 (16) |
C4 | 0.037 (2) | 0.038 (3) | 0.038 (2) | −0.0075 (19) | 0.0018 (17) | −0.0005 (16) |
C5 | 0.0281 (18) | 0.0218 (19) | 0.055 (3) | −0.0007 (16) | −0.0005 (17) | 0.0045 (18) |
C6 | 0.0223 (16) | 0.016 (2) | 0.047 (2) | −0.0009 (15) | 0.0009 (14) | −0.0027 (14) |
C7 | 0.049 (2) | 0.0284 (18) | 0.048 (3) | 0.0036 (16) | 0.003 (2) | −0.008 (2) |
C8 | 0.0359 (18) | 0.0306 (16) | 0.044 (3) | 0.0020 (14) | −0.0027 (18) | −0.0055 (16) |
Cl1' | 0.0640 (7) | 0.0447 (6) | 0.0391 (6) | −0.0008 (5) | 0.0014 (5) | 0.0036 (4) |
O1' | 0.0615 (18) | 0.041 (3) | 0.045 (3) | 0.0082 (17) | 0.0003 (18) | −0.012 (2) |
N1' | 0.0370 (16) | 0.0230 (17) | 0.042 (2) | 0.0014 (12) | 0.0022 (15) | −0.0035 (15) |
N2' | 0.0343 (14) | 0.0272 (13) | 0.0391 (18) | −0.0006 (12) | −0.0039 (15) | −0.0031 (12) |
C1' | 0.0230 (15) | 0.0169 (17) | 0.0357 (18) | −0.0020 (14) | 0.0010 (14) | −0.0065 (14) |
C2' | 0.0322 (18) | 0.0241 (19) | 0.039 (2) | −0.0012 (16) | −0.0007 (16) | −0.0060 (14) |
C3' | 0.038 (2) | 0.036 (2) | 0.038 (2) | −0.0052 (18) | 0.0046 (17) | −0.0077 (16) |
C4' | 0.037 (2) | 0.038 (3) | 0.038 (2) | −0.0075 (19) | 0.0018 (17) | −0.0005 (16) |
C5' | 0.0281 (18) | 0.0218 (19) | 0.055 (3) | −0.0007 (16) | −0.0005 (17) | 0.0045 (18) |
C6' | 0.0223 (16) | 0.016 (2) | 0.047 (2) | −0.0009 (15) | 0.0009 (14) | −0.0027 (14) |
C7' | 0.049 (2) | 0.0284 (18) | 0.048 (3) | 0.0036 (16) | 0.003 (2) | −0.008 (2) |
C8' | 0.0359 (18) | 0.0306 (16) | 0.044 (3) | 0.0020 (14) | −0.0027 (18) | −0.0055 (16) |
O2 | 0.0705 (18) | 0.0299 (12) | 0.0483 (14) | 0.0076 (12) | −0.0090 (12) | −0.0024 (10) |
N3 | 0.0491 (18) | 0.0548 (19) | 0.0433 (16) | 0.0079 (15) | 0.0003 (14) | 0.0081 (13) |
C9 | 0.0320 (17) | 0.0316 (16) | 0.0470 (18) | 0.0005 (13) | −0.0020 (13) | 0.0020 (14) |
C10 | 0.0364 (17) | 0.0352 (16) | 0.0439 (17) | 0.0012 (14) | −0.0004 (14) | −0.0024 (14) |
C11 | 0.0386 (19) | 0.0417 (18) | 0.0453 (18) | 0.0013 (15) | −0.0004 (14) | 0.0015 (14) |
C12 | 0.071 (3) | 0.074 (3) | 0.059 (2) | 0.018 (2) | 0.011 (2) | 0.029 (2) |
C13 | 0.063 (3) | 0.080 (3) | 0.0422 (19) | −0.003 (2) | −0.0037 (19) | −0.0049 (19) |
Cl1—C4 | 1.713 (2) | N2'—C9 | 1.430 (9) |
O1—C8 | 1.213 (5) | C1'—C2' | 1.3900 |
N1—C6 | 1.348 (3) | C1'—C6' | 1.3900 |
N1—C8 | 1.383 (5) | C2'—C3' | 1.3900 |
N1—C7 | 1.458 (5) | C2'—H2' | 0.9300 |
N2—C1 | 1.395 (3) | C3'—C4' | 1.3900 |
N2—C8 | 1.409 (4) | C4'—C5' | 1.3900 |
N2—C9 | 1.427 (4) | C4'—H4' | 0.9300 |
C1—C2 | 1.3900 | C5'—C6' | 1.3900 |
C1—C6 | 1.3900 | C5'—H5' | 0.9300 |
C2—C3 | 1.3900 | C7'—H7'A | 0.9600 |
C2—H2 | 0.9300 | C7'—H7'B | 0.9600 |
C3—C4 | 1.3900 | C7'—H7'C | 0.9600 |
C3—H3 | 0.9300 | O2—C9 | 1.227 (4) |
C4—C5 | 1.3900 | N3—C11 | 1.333 (4) |
C5—C6 | 1.3900 | N3—C13 | 1.442 (5) |
C5—H5 | 0.9300 | N3—C12 | 1.457 (5) |
C7—H7A | 0.9600 | C9—C10 | 1.424 (5) |
C7—H7B | 0.9600 | C10—C11 | 1.363 (5) |
C7—H7C | 0.9600 | C10—H10 | 0.9300 |
Cl1'—C3' | 1.705 (8) | C11—H11 | 0.9300 |
O1'—C8' | 1.213 (10) | C12—H12A | 0.9600 |
N1'—C6' | 1.343 (10) | C12—H12B | 0.9600 |
N1'—C8' | 1.385 (10) | C12—H12C | 0.9600 |
N1'—C7' | 1.458 (10) | C13—H13A | 0.9600 |
N2'—C1' | 1.395 (9) | C13—H13B | 0.9600 |
N2'—C8' | 1.410 (10) | C13—H13C | 0.9600 |
C6—N1—C8 | 110.9 (4) | C5'—C4'—H4' | 120.0 |
C6—N1—C7 | 126.6 (4) | C3'—C4'—H4' | 120.0 |
C8—N1—C7 | 122.5 (3) | C4'—C5'—C6' | 120.0 |
C1—N2—C8 | 109.7 (3) | C4'—C5'—H5' | 120.0 |
C1—N2—C9 | 124.1 (3) | C6'—C5'—H5' | 120.0 |
C8—N2—C9 | 125.9 (4) | N1'—C6'—C5' | 140.1 (15) |
C2—C1—C6 | 120.0 | N1'—C6'—C1' | 99.9 (15) |
C2—C1—N2 | 134.2 (2) | C5'—C6'—C1' | 120.0 |
C6—C1—N2 | 105.8 (2) | N1'—C7'—H7'A | 109.5 |
C3—C2—C1 | 120.0 | N1'—C7'—H7'B | 109.5 |
C3—C2—H2 | 120.0 | H7'A—C7'—H7'B | 109.5 |
C1—C2—H2 | 120.0 | N1'—C7'—H7'C | 109.5 |
C4—C3—C2 | 120.0 | H7'A—C7'—H7'C | 109.5 |
C4—C3—H3 | 120.0 | H7'B—C7'—H7'C | 109.5 |
C2—C3—H3 | 120.0 | O1'—C8'—N1' | 118 (4) |
C5—C4—C3 | 120.0 | O1'—C8'—N2' | 133 (4) |
C5—C4—Cl1 | 120.32 (15) | N1'—C8'—N2' | 109 (2) |
C3—C4—Cl1 | 119.67 (15) | C11—N3—C13 | 122.1 (3) |
C4—C5—C6 | 120.0 | C11—N3—C12 | 121.2 (3) |
C4—C5—H5 | 120.0 | C13—N3—C12 | 116.6 (3) |
C6—C5—H5 | 120.0 | O2—C9—C10 | 125.5 (3) |
N1—C6—C5 | 131.0 (3) | O2—C9—N2 | 115.1 (3) |
N1—C6—C1 | 109.0 (3) | C10—C9—N2 | 119.3 (3) |
C5—C6—C1 | 120.0 | O2—C9—N2' | 123.6 (8) |
O1—C8—N1 | 126.9 (8) | C10—C9—N2' | 110.9 (8) |
O1—C8—N2 | 128.5 (8) | C11—C10—C9 | 118.7 (3) |
N1—C8—N2 | 104.6 (4) | C11—C10—H10 | 120.6 |
C6'—N1'—C8' | 114 (2) | C9—C10—H10 | 120.6 |
C6'—N1'—C7' | 122.7 (19) | N3—C11—C10 | 127.0 (3) |
C8'—N1'—C7' | 123.5 (16) | N3—C11—H11 | 116.5 |
C1'—N2'—C8' | 99.7 (15) | C10—C11—H11 | 116.5 |
C1'—N2'—C9 | 127.0 (15) | N3—C12—H12A | 109.5 |
C8'—N2'—C9 | 132.6 (15) | N3—C12—H12B | 109.5 |
C2'—C1'—C6' | 120.0 | H12A—C12—H12B | 109.5 |
C2'—C1'—N2' | 122.3 (12) | N3—C12—H12C | 109.5 |
C6'—C1'—N2' | 117.7 (12) | H12A—C12—H12C | 109.5 |
C1'—C2'—C3' | 120.0 | H12B—C12—H12C | 109.5 |
C1'—C2'—H2' | 120.0 | N3—C13—H13A | 109.5 |
C3'—C2'—H2' | 120.0 | N3—C13—H13B | 109.5 |
C2'—C3'—C4' | 120.0 | H13A—C13—H13B | 109.5 |
C2'—C3'—Cl1' | 127.5 (11) | N3—C13—H13C | 109.5 |
C4'—C3'—Cl1' | 112.3 (11) | H13A—C13—H13C | 109.5 |
C5'—C4'—C3' | 120.0 | H13B—C13—H13C | 109.5 |
C8—N2—C1—C2 | 178.9 (2) | Cl1'—C3'—C4'—C5' | −175.6 (11) |
C9—N2—C1—C2 | −6.1 (7) | C3'—C4'—C5'—C6' | 0.0 |
C8—N2—C1—C6 | −1.5 (3) | C8'—N1'—C6'—C5' | 180.0 (3) |
C9—N2—C1—C6 | 173.4 (5) | C7'—N1'—C6'—C5' | 0.1 (8) |
C6—C1—C2—C3 | 0.0 | C8'—N1'—C6'—C1' | −0.1 (5) |
N2—C1—C2—C3 | 179.5 (3) | C7'—N1'—C6'—C1' | −180.0 (5) |
C1—C2—C3—C4 | 0.0 | C4'—C5'—C6'—N1' | 180.0 (4) |
C2—C3—C4—C5 | 0.0 | C4'—C5'—C6'—C1' | 0.0 |
C2—C3—C4—Cl1 | −178.8 (3) | C2'—C1'—C6'—N1' | −180.0 (3) |
C3—C4—C5—C6 | 0.0 | N2'—C1'—C6'—N1' | 0.0 (4) |
Cl1—C4—C5—C6 | 178.8 (3) | C2'—C1'—C6'—C5' | 0.0 |
C8—N1—C6—C5 | 180.0 (2) | N2'—C1'—C6'—C5' | −180.0 (3) |
C7—N1—C6—C5 | 1.7 (5) | C6'—N1'—C8'—O1' | −180.0 (6) |
C8—N1—C6—C1 | −2.1 (3) | C7'—N1'—C8'—O1' | −0.1 (10) |
C7—N1—C6—C1 | 179.6 (3) | C6'—N1'—C8'—N2' | 0.1 (7) |
C4—C5—C6—N1 | 177.7 (3) | C7'—N1'—C8'—N2' | 180.0 (6) |
C4—C5—C6—C1 | 0.0 | C1'—N2'—C8'—O1' | −180.0 (7) |
C2—C1—C6—N1 | −178.2 (2) | C9—N2'—C8'—O1' | 9 (3) |
N2—C1—C6—N1 | 2.2 (3) | C1'—N2'—C8'—N1' | 0.0 (6) |
C2—C1—C6—C5 | 0.0 | C9—N2'—C8'—N1' | −172 (2) |
N2—C1—C6—C5 | −179.6 (2) | C1—N2—C9—O2 | −10.2 (7) |
C6—N1—C8—O1 | −178.3 (4) | C8—N2—C9—O2 | 164.0 (4) |
C7—N1—C8—O1 | 0.1 (7) | C1—N2—C9—C10 | 168.9 (4) |
C6—N1—C8—N2 | 1.1 (4) | C8—N2—C9—C10 | −17.0 (6) |
C7—N1—C8—N2 | 179.5 (4) | C1—N2—C9—N2' | 178 (9) |
C1—N2—C8—O1 | 179.7 (4) | C8—N2—C9—N2' | −8 (9) |
C9—N2—C8—O1 | 4.8 (8) | C1'—N2'—C9—O2 | −8 (2) |
C1—N2—C8—N1 | 0.3 (4) | C8'—N2'—C9—O2 | 161.0 (11) |
C9—N2—C8—N1 | −174.5 (5) | C1'—N2'—C9—C10 | 171.9 (12) |
C8'—N2'—C1'—C2' | −180.0 (3) | C8'—N2'—C9—C10 | −19 (2) |
C9—N2'—C1'—C2' | −8 (2) | C1'—N2'—C9—N2 | 0 (7) |
C8'—N2'—C1'—C6' | 0.0 (5) | C8'—N2'—C9—N2 | 170 (10) |
C9—N2'—C1'—C6' | 172 (2) | O2—C9—C10—C11 | −2.6 (5) |
C6'—C1'—C2'—C3' | 0.0 | N2—C9—C10—C11 | 178.5 (4) |
N2'—C1'—C2'—C3' | 180.0 (3) | N2'—C9—C10—C11 | 177.1 (12) |
C1'—C2'—C3'—C4' | 0.0 | C13—N3—C11—C10 | 1.3 (6) |
C1'—C2'—C3'—Cl1' | 174.9 (13) | C12—N3—C11—C10 | 177.6 (4) |
C2'—C3'—C4'—C5' | 0.0 | C9—C10—C11—N3 | −177.1 (3) |
Experimental details
Crystal data | |
Chemical formula | C13H14ClN3O2 |
Mr | 279.72 |
Crystal system, space group | Orthorhombic, Pbca |
Temperature (K) | 293 |
a, b, c (Å) | 7.3145 (2), 14.2903 (3), 25.1512 (6) |
V (Å3) | 2628.96 (11) |
Z | 8 |
Radiation type | Mo Kα |
µ (mm−1) | 0.29 |
Crystal size (mm) | 0.30 × 0.25 × 0.05 |
Data collection | |
Diffractometer | Bruker APEXII diffractometer |
Absorption correction | Multi-scan (SADABS; Sheldrick, 1996) |
Tmin, Tmax | 0.918, 0.986 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 32296, 2684, 2103 |
Rint | 0.053 |
(sin θ/λ)max (Å−1) | 0.626 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.067, 0.204, 1.15 |
No. of reflections | 2684 |
No. of parameters | 189 |
No. of restraints | 82 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.35, −0.45 |
Computer programs: APEX2 (Bruker, 2005), SAINT (Bruker, 2005), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), X-SEED (Barbour, 2001), publCIF (Westrip, 2010).
Acknowledgements
We thank Université Sidi Mohamed Ben Abdallah,Université Mohammed V-Agdal and the University of Malaya for supporting this study.
References
Barbour, L. J. (2001). J. Supramol. Chem. 1, 189–191. CrossRef CAS Google Scholar
Bruker (2005). APEX2 and SAINT. Bruker AXS Inc., Madison, Wisconsin, USA. Google Scholar
Mondieig, D., Negrier, Ph., Leger, J. M., Massip, S., Benali, B., Lazar, Z., Boucetta, A., Lakhrissi, B. & Massoui, M. (2007). Anal. Sci. X-ray Struct. Anal. Online, 23, x125–x126. CrossRef CAS Google Scholar
Sheldrick, G. M. (1996). SADABS. University of Göttingen, Germany. Google Scholar
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar
Westrip, S. P. (2010). J. Appl. Cryst. 43, 920–925. Web of Science CrossRef CAS IUCr Journals Google Scholar
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In the reaction of 7-chloro-1,5-benzodiazepine-2,4-dione (Mondieig et al., 2007) with N,N-dimethylformamide/dimethylacetal, the seven-membered ring that is fused with the chlorobenzene ring undergoes a contraction to form five-membered ring, the reaction yielding C13H14ClN3O2. The compound is a 4:1 co-crystal whose major component has the chlorine substituent in the 5-position of the benzimidazolone; the minor component has the chlorine in the 6-position (Scheme I, Fig. 1). The crystal structure is better described in terms of nearly 'whole-molecule disorder" (Fig. 2). Interestingly, if the reactant had been unsubstituted 1,5-benzodiazepine-2,4-dione only, the product would have been a single phase only.