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organic compounds
In the title compound, C18H19N3O2S, the thiadiazole ring adopts an envelope conformation. The crystal structure is stabilized by intermolecular N—HO hydrogen bonds, forming one-dimensional chains parallel to the b axis.
Supporting information
Crystallographic Information File (CIF) https://doi.org/10.1107/S1600536806005204/wn6417sup1.cif | |
Structure factor file (CIF format) https://doi.org/10.1107/S1600536806005204/wn6417Isup2.hkl |
CCDC reference: 601268
Key indicators
- Single-crystal X-ray study
- T = 298 K
- Mean (C-C) = 0.004 Å
- R factor = 0.063
- wR factor = 0.124
- Data-to-parameter ratio = 13.7
checkCIF/PLATON results
No syntax errors found
Alert level C PLAT066_ALERT_1_C Predicted and Reported Transmissions Identical . ? PLAT322_ALERT_2_C Check Hybridisation of S1 in Main Residue . ?
0 ALERT level A = In general: serious problem 0 ALERT level B = Potentially serious problem 2 ALERT level C = Check and explain 0 ALERT level G = General alerts; check 1 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 0 ALERT type 3 Indicator that the structure quality may be low 0 ALERT type 4 Improvement, methodology, query or suggestion
Computing details top
Data collection: SMART (Bruker, 2000); cell refinement: SAINT (Bruker, 2000); data reduction: SAINT; program(s) used to solve structure: SHELXTL (Sheldrick, 1997); program(s) used to refine structure: SHELXTL; molecular graphics: SHELXTL; software used to prepare material for publication: SHELXTL, PARST (Nardelli, 1995) and PLATON (Spek, 2003).
4-(4-Methoxybenzoyl)-2,2-dimethyl-5-phenylamino-2,3-dihydro-1,3,4-thiadiazole top
Crystal data top
C18H19N3O2S | F(000) = 1440 |
Mr = 341.42 | Dx = 1.336 Mg m−3 |
Orthorhombic, Pbca | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2ac 2ab | Cell parameters from 2397 reflections |
a = 9.4042 (14) Å | θ = 1.7–25.2° |
b = 15.603 (2) Å | µ = 0.21 mm−1 |
c = 23.143 (4) Å | T = 298 K |
V = 3395.8 (9) Å3 | Block, colourless |
Z = 8 | 0.48 × 0.30 × 0.20 mm |
Data collection top
Bruker SMART APEX CCD area-detector diffractometer | 3073 independent reflections |
Radiation source: fine-focus sealed tube | 2446 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.049 |
Detector resolution: 83.66 pixels mm-1 | θmax = 25.2°, θmin = 1.7° |
ω scans | h = −11→11 |
Absorption correction: multi-scan (SADABS; Bruker, 2000) | k = −18→18 |
Tmin = 0.907, Tmax = 0.960 | l = −18→27 |
16783 measured reflections |
Refinement top
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)] = 0.063 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.124 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.25 | w = 1/[σ2(Fo2) + (0.0359P)2 + 2.015P] where P = (Fo2 + 2Fc2)/3 |
3073 reflections | (Δ/σ)max < 0.001 |
224 parameters | Δρmax = 0.19 e Å−3 |
1 restraint | Δρmin = −0.25 e Å−3 |
Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2) top
x | y | z | Uiso*/Ueq | ||
S1 | 0.95754 (9) | 0.18140 (4) | 0.29183 (3) | 0.0434 (2) | |
O1 | 0.9255 (2) | 0.46800 (12) | 0.30248 (9) | 0.0465 (6) | |
O2 | 0.8325 (2) | 0.55427 (14) | 0.03674 (9) | 0.0540 (6) | |
N1 | 1.0452 (3) | 0.15321 (14) | 0.18271 (10) | 0.0370 (6) | |
H1B | 1.063 (3) | 0.1034 (9) | 0.1951 (11) | 0.037 (8)* | |
N2 | 1.0238 (3) | 0.29451 (13) | 0.21392 (9) | 0.0366 (6) | |
N3 | 0.9840 (3) | 0.33988 (13) | 0.26382 (9) | 0.0343 (6) | |
C1 | 1.1747 (3) | 0.11211 (19) | 0.09827 (13) | 0.0463 (8) | |
H1 | 1.2084 | 0.0647 | 0.1184 | 0.056* | |
C2 | 1.2146 (4) | 0.1250 (2) | 0.04176 (14) | 0.0597 (10) | |
H2 | 1.2751 | 0.0860 | 0.0239 | 0.072* | |
C3 | 1.1659 (4) | 0.1949 (2) | 0.01137 (14) | 0.0626 (10) | |
H3 | 1.1938 | 0.2037 | −0.0267 | 0.075* | |
C4 | 1.0758 (4) | 0.2512 (2) | 0.03810 (14) | 0.0538 (9) | |
H4 | 1.0418 | 0.2983 | 0.0176 | 0.065* | |
C5 | 1.0345 (3) | 0.23986 (18) | 0.09450 (13) | 0.0432 (8) | |
H5 | 0.9734 | 0.2789 | 0.1120 | 0.052* | |
C6 | 1.0848 (3) | 0.16949 (16) | 0.12513 (12) | 0.0349 (7) | |
C7 | 1.0146 (3) | 0.21353 (16) | 0.22344 (11) | 0.0323 (6) | |
C8 | 0.9995 (3) | 0.29014 (17) | 0.31795 (12) | 0.0342 (7) | |
C9 | 0.9469 (3) | 0.42353 (15) | 0.25918 (12) | 0.0326 (7) | |
C10 | 0.9249 (3) | 0.45955 (15) | 0.19985 (12) | 0.0324 (7) | |
C11 | 1.0191 (3) | 0.45278 (17) | 0.15439 (13) | 0.0404 (7) | |
H11 | 1.1058 | 0.4253 | 0.1599 | 0.049* | |
C12 | 0.9865 (3) | 0.48620 (18) | 0.10097 (13) | 0.0436 (8) | |
H12 | 1.0515 | 0.4819 | 0.0708 | 0.052* | |
C13 | 0.8566 (3) | 0.52638 (17) | 0.09204 (13) | 0.0385 (7) | |
C14 | 0.7636 (3) | 0.53593 (18) | 0.13717 (13) | 0.0418 (7) | |
H14 | 0.6774 | 0.5641 | 0.1317 | 0.050* | |
C15 | 0.7986 (3) | 0.50347 (17) | 0.19088 (13) | 0.0387 (7) | |
H15 | 0.7363 | 0.5113 | 0.2216 | 0.046* | |
C16 | 0.6954 (4) | 0.5854 (3) | 0.02343 (16) | 0.0726 (11) | |
H16A | 0.6258 | 0.5428 | 0.0334 | 0.109* | |
H16B | 0.6896 | 0.5976 | −0.0172 | 0.109* | |
H16C | 0.6775 | 0.6368 | 0.0450 | 0.109* | |
C17 | 0.8926 (4) | 0.31297 (19) | 0.36469 (13) | 0.0519 (9) | |
H17A | 0.9164 | 0.3677 | 0.3809 | 0.078* | |
H17B | 0.8949 | 0.2702 | 0.3945 | 0.078* | |
H17C | 0.7990 | 0.3154 | 0.3482 | 0.078* | |
C18 | 1.1516 (3) | 0.2929 (2) | 0.33883 (14) | 0.0531 (9) | |
H18A | 1.2141 | 0.2768 | 0.3079 | 0.080* | |
H18B | 1.1632 | 0.2538 | 0.3705 | 0.080* | |
H18C | 1.1742 | 0.3500 | 0.3514 | 0.080* |
Atomic displacement parameters (Å2) top
U11 | U22 | U33 | U12 | U13 | U23 | |
S1 | 0.0616 (6) | 0.0274 (4) | 0.0413 (5) | −0.0051 (4) | 0.0083 (4) | 0.0022 (3) |
O1 | 0.0654 (15) | 0.0286 (11) | 0.0456 (13) | 0.0047 (10) | 0.0038 (11) | −0.0079 (9) |
O2 | 0.0567 (15) | 0.0627 (14) | 0.0426 (14) | 0.0148 (11) | 0.0019 (11) | 0.0103 (11) |
N1 | 0.0520 (16) | 0.0209 (12) | 0.0381 (14) | 0.0030 (11) | 0.0011 (12) | 0.0010 (11) |
N2 | 0.0520 (16) | 0.0236 (11) | 0.0341 (13) | 0.0022 (11) | 0.0041 (12) | −0.0012 (10) |
N3 | 0.0456 (15) | 0.0254 (11) | 0.0320 (14) | 0.0037 (10) | 0.0050 (11) | −0.0010 (10) |
C1 | 0.060 (2) | 0.0325 (16) | 0.046 (2) | 0.0054 (15) | 0.0021 (16) | −0.0030 (14) |
C2 | 0.080 (3) | 0.053 (2) | 0.046 (2) | 0.0072 (19) | 0.0136 (19) | −0.0084 (17) |
C3 | 0.086 (3) | 0.065 (2) | 0.0366 (19) | −0.003 (2) | 0.0084 (19) | 0.0016 (17) |
C4 | 0.068 (2) | 0.051 (2) | 0.042 (2) | −0.0037 (18) | −0.0111 (18) | 0.0091 (16) |
C5 | 0.050 (2) | 0.0360 (16) | 0.0432 (19) | −0.0002 (15) | −0.0082 (15) | −0.0007 (13) |
C6 | 0.0422 (18) | 0.0271 (14) | 0.0353 (16) | −0.0052 (12) | −0.0048 (13) | −0.0028 (12) |
C7 | 0.0346 (17) | 0.0261 (14) | 0.0361 (16) | −0.0007 (12) | −0.0015 (13) | 0.0023 (12) |
C8 | 0.0401 (17) | 0.0267 (14) | 0.0358 (16) | −0.0001 (12) | 0.0037 (13) | 0.0006 (12) |
C9 | 0.0320 (16) | 0.0237 (13) | 0.0422 (18) | −0.0020 (12) | 0.0019 (14) | −0.0017 (12) |
C10 | 0.0373 (17) | 0.0198 (13) | 0.0400 (17) | −0.0010 (11) | 0.0022 (14) | 0.0001 (11) |
C11 | 0.0365 (18) | 0.0299 (15) | 0.055 (2) | 0.0062 (13) | 0.0073 (15) | 0.0078 (14) |
C12 | 0.0456 (19) | 0.0368 (16) | 0.0483 (19) | 0.0054 (14) | 0.0159 (15) | 0.0068 (14) |
C13 | 0.0452 (19) | 0.0288 (15) | 0.0414 (18) | 0.0010 (13) | 0.0012 (15) | 0.0016 (13) |
C14 | 0.0370 (18) | 0.0403 (17) | 0.0481 (19) | 0.0100 (13) | −0.0008 (15) | 0.0027 (15) |
C15 | 0.0371 (18) | 0.0341 (16) | 0.0449 (18) | 0.0040 (13) | 0.0075 (14) | −0.0032 (13) |
C16 | 0.077 (3) | 0.083 (3) | 0.058 (2) | 0.027 (2) | −0.010 (2) | 0.013 (2) |
C17 | 0.069 (2) | 0.0397 (17) | 0.0472 (19) | 0.0022 (16) | 0.0190 (17) | 0.0022 (15) |
C18 | 0.053 (2) | 0.056 (2) | 0.051 (2) | −0.0067 (17) | −0.0086 (17) | 0.0001 (16) |
Geometric parameters (Å, º) top
S1—C7 | 1.745 (3) | C8—C18 | 1.510 (4) |
S1—C8 | 1.844 (3) | C8—C17 | 1.519 (4) |
O1—C9 | 1.235 (3) | C9—C10 | 1.498 (4) |
O2—C13 | 1.371 (3) | C10—C11 | 1.380 (4) |
O2—C16 | 1.412 (4) | C10—C15 | 1.386 (4) |
N1—C7 | 1.363 (3) | C11—C12 | 1.376 (4) |
N1—C6 | 1.407 (4) | C11—H11 | 0.9300 |
N1—H1B | 0.844 (10) | C12—C13 | 1.389 (4) |
N2—C7 | 1.286 (3) | C12—H12 | 0.9300 |
N2—N3 | 1.405 (3) | C13—C14 | 1.371 (4) |
N3—C9 | 1.355 (3) | C14—C15 | 1.382 (4) |
N3—C8 | 1.481 (3) | C14—H14 | 0.9300 |
C1—C2 | 1.375 (4) | C15—H15 | 0.9300 |
C1—C6 | 1.379 (4) | C16—H16A | 0.9600 |
C1—H1 | 0.9300 | C16—H16B | 0.9600 |
C2—C3 | 1.376 (5) | C16—H16C | 0.9600 |
C2—H2 | 0.9300 | C17—H17A | 0.9600 |
C3—C4 | 1.369 (5) | C17—H17B | 0.9600 |
C3—H3 | 0.9300 | C17—H17C | 0.9600 |
C4—C5 | 1.373 (4) | C18—H18A | 0.9600 |
C4—H4 | 0.9300 | C18—H18B | 0.9600 |
C5—C6 | 1.390 (4) | C18—H18C | 0.9600 |
C5—H5 | 0.9300 | ||
C7—S1—C8 | 88.11 (12) | N3—C9—C10 | 118.0 (2) |
C13—O2—C16 | 117.6 (3) | C11—C10—C15 | 118.3 (3) |
C7—N1—C6 | 125.9 (2) | C11—C10—C9 | 125.5 (3) |
C7—N1—H1B | 116.2 (19) | C15—C10—C9 | 116.2 (2) |
C6—N1—H1B | 115.9 (19) | C12—C11—C10 | 120.9 (3) |
C7—N2—N3 | 109.6 (2) | C12—C11—H11 | 119.6 |
C9—N3—N2 | 119.3 (2) | C10—C11—H11 | 119.6 |
C9—N3—C8 | 126.7 (2) | C11—C12—C13 | 120.1 (3) |
N2—N3—C8 | 113.9 (2) | C11—C12—H12 | 120.0 |
C2—C1—C6 | 120.1 (3) | C13—C12—H12 | 120.0 |
C2—C1—H1 | 120.0 | O2—C13—C14 | 124.9 (3) |
C6—C1—H1 | 120.0 | O2—C13—C12 | 115.3 (3) |
C1—C2—C3 | 120.7 (3) | C14—C13—C12 | 119.8 (3) |
C1—C2—H2 | 119.6 | C13—C14—C15 | 119.6 (3) |
C3—C2—H2 | 119.6 | C13—C14—H14 | 120.2 |
C4—C3—C2 | 118.9 (3) | C15—C14—H14 | 120.2 |
C4—C3—H3 | 120.5 | C14—C15—C10 | 121.3 (3) |
C2—C3—H3 | 120.5 | C14—C15—H15 | 119.3 |
C3—C4—C5 | 121.4 (3) | C10—C15—H15 | 119.3 |
C3—C4—H4 | 119.3 | O2—C16—H16A | 109.5 |
C5—C4—H4 | 119.3 | O2—C16—H16B | 109.5 |
C4—C5—C6 | 119.4 (3) | H16A—C16—H16B | 109.5 |
C4—C5—H5 | 120.3 | O2—C16—H16C | 109.5 |
C6—C5—H5 | 120.3 | H16A—C16—H16C | 109.5 |
C1—C6—C5 | 119.4 (3) | H16B—C16—H16C | 109.5 |
C1—C6—N1 | 118.2 (2) | C8—C17—H17A | 109.5 |
C5—C6—N1 | 122.4 (3) | C8—C17—H17B | 109.5 |
N2—C7—N1 | 123.1 (3) | H17A—C17—H17B | 109.5 |
N2—C7—S1 | 117.3 (2) | C8—C17—H17C | 109.5 |
N1—C7—S1 | 119.60 (19) | H17A—C17—H17C | 109.5 |
N3—C8—C18 | 110.4 (2) | H17B—C17—H17C | 109.5 |
N3—C8—C17 | 114.5 (2) | C8—C18—H18A | 109.5 |
C18—C8—C17 | 113.1 (3) | C8—C18—H18B | 109.5 |
N3—C8—S1 | 100.59 (17) | H18A—C18—H18B | 109.5 |
C18—C8—S1 | 109.5 (2) | C8—C18—H18C | 109.5 |
C17—C8—S1 | 107.9 (2) | H18A—C18—H18C | 109.5 |
O1—C9—N3 | 121.2 (3) | H18B—C18—H18C | 109.5 |
O1—C9—C10 | 120.7 (2) | ||
C7—N2—N3—C9 | −161.4 (3) | C7—S1—C8—N3 | 26.20 (18) |
C7—N2—N3—C8 | 23.5 (3) | C7—S1—C8—C18 | −90.1 (2) |
C6—C1—C2—C3 | 0.1 (5) | C7—S1—C8—C17 | 146.4 (2) |
C1—C2—C3—C4 | −0.6 (6) | N2—N3—C9—O1 | −172.4 (2) |
C2—C3—C4—C5 | 0.7 (5) | C8—N3—C9—O1 | 2.0 (4) |
C3—C4—C5—C6 | −0.2 (5) | N2—N3—C9—C10 | 10.8 (4) |
C2—C1—C6—C5 | 0.4 (5) | C8—N3—C9—C10 | −174.7 (2) |
C2—C1—C6—N1 | 179.1 (3) | O1—C9—C10—C11 | 132.2 (3) |
C4—C5—C6—C1 | −0.4 (4) | N3—C9—C10—C11 | −51.1 (4) |
C4—C5—C6—N1 | −179.0 (3) | O1—C9—C10—C15 | −47.6 (4) |
C7—N1—C6—C1 | 149.1 (3) | N3—C9—C10—C15 | 129.2 (3) |
C7—N1—C6—C5 | −32.2 (4) | C15—C10—C11—C12 | −2.2 (4) |
N3—N2—C7—N1 | 179.3 (2) | C9—C10—C11—C12 | 178.1 (3) |
N3—N2—C7—S1 | 0.3 (3) | C10—C11—C12—C13 | −0.9 (4) |
C6—N1—C7—N2 | −2.6 (5) | C16—O2—C13—C14 | −8.4 (4) |
C6—N1—C7—S1 | 176.4 (2) | C16—O2—C13—C12 | 171.9 (3) |
C8—S1—C7—N2 | −17.4 (2) | C11—C12—C13—O2 | −177.5 (3) |
C8—S1—C7—N1 | 163.5 (2) | C11—C12—C13—C14 | 2.8 (4) |
C9—N3—C8—C18 | −92.5 (3) | O2—C13—C14—C15 | 178.7 (3) |
N2—N3—C8—C18 | 82.2 (3) | C12—C13—C14—C15 | −1.6 (4) |
C9—N3—C8—C17 | 36.5 (4) | C13—C14—C15—C10 | −1.5 (4) |
N2—N3—C8—C17 | −148.8 (2) | C11—C10—C15—C14 | 3.4 (4) |
C9—N3—C8—S1 | 151.9 (2) | C9—C10—C15—C14 | −176.9 (2) |
N2—N3—C8—S1 | −33.4 (3) |
Hydrogen-bond geometry (Å, º) top
D—H···A | D—H | H···A | D···A | D—H···A |
C5—H5···N2 | 0.93 | 2.42 | 2.894 (4) | 112 |
C11—H11···N2 | 0.93 | 2.51 | 2.828 (3) | 100 |
C17—H17A···O1 | 0.96 | 2.40 | 2.832 (4) | 107 |
N1—H1B···O1i | 0.85 (2) | 2.12 (1) | 2.923 (3) | 160 (2) |
Symmetry code: (i) −x+2, y−1/2, −z+1/2. |
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