In methyl 4-(5-amino-3-phenyl-1
H-pyrazol-1-yl)-3-nitrobenzoate, C
17H
14N
4O
4, the molecules are linked into complex sheets by a combination of N-H
N, N-H
O and C-H
O hydrogen bonds. In the isomeric methyl 3-nitro-4-[(5-phenyl-1
H-pyrazol-3-yl)amino]benzoate, molecules exhibit a polarized molecular-electronic structure and are linked into chains of edge-fused rings by a combination of N-H
O and C-H
O hydrogen bonds.
Supporting information
CCDC references: 661800; 661801
A solution of 5-amino-3-phenyl-1H-pyrazole (2 mmol) and methyl
4-fluoro-3-nitrobenzoate (2 mmol) in dimethylsulfoxide–methanol (8 ml of a
1:7 v/v mixture) was heated under reflux with magnetic stirring
for 10 min. The mixture was cooled to ambient temperature, and the resulting
solid was collected by filtration and washed with methanol (3 x 6 ml).
Recrystallization of the crude reaction product from dimethylsulfoxide gave
compound (II). The resulting filtrate was evaporated under reduced pressure,
and the resulting solid was crystallized successively from methanol and
dimethylsulfoxide to give compound (I). Compound (I): yield 46% according to
the above procedure, giving yellow crystals suitable for single-crystal X-ray
diffraction, m.p. 476–477 K. Analysis found: C 59.2, H 4.3, N 16.2%;
C17H14N4O4 requires: C 60.3, H 4.2, N 16.6%. Compuond (II): yield 48%
according to the above procedure, giving orange crystals suitable for
single-crystal X-ray diffraction, m.p. 530–531 K; obtained as sole product
when a similar reaction was carried out in neat dimethylsulfoxide (2 ml) at
298 K for 2 h (yield 90%). Analysis found: C 60.2, H 4.7, N 16.4%;
C17H14N4O4 requires: C 60.3, H 4.2, N 16.6%.
For compound (I), the space group P21/n was uniquely assigned
from the systematic absences. For compound (II), the systematic absences
permitted Cc and C2/c as possible space groups;
C2/c was selected and confirmed by the subsequent structure
analysis. All H atoms were located in difference maps and then treated as
riding atoms. H atoms bonded to C atoms were allowed to ride in geometrically
idealized positions, with C—H distances of 0.95 Å (aromatic and pyrazole)
or 0.98 Å (methyl), and with Uiso(H) = kUeq(C), where
k = 1.5 for the methyl groups and 1.2 for all other H atoms bonded to C
atoms. H atoms bonded to N atoms were permitted to ride at the positions
deduced from difference maps, all giving N—H distances of 0.87 Å, with
Uiso(H) = 1.2Ueq(N).
For both compounds, data collection: COLLECT (Hooft, 1999); cell refinement: DIRAX/LSQ (Duisenberg et al., 2000); data reduction: EVALCCD (Duisenberg et al., 2003); program(s) used to solve structure: SIR2004 (Burla et al., 2005) and WinGX (Farrugia, 1999); program(s) used to refine structure: OSCAIL (McArdle, 2003) and SHELXL97 (Sheldrick, 1997); molecular graphics: PLATON (Spek, 2003); software used to prepare material for publication: SHELXL97 and PRPKAPPA (Ferguson, 1999).
(I) methyl 4-(5-amino-3-phenyl-1
H-pyrazol-1-yl)-3-nitrobenzoate
top
Crystal data top
C17H14N4O4 | F(000) = 704 |
Mr = 338.32 | Dx = 1.435 Mg m−3 |
Monoclinic, P21/n | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2yn | Cell parameters from 3597 reflections |
a = 12.3516 (8) Å | θ = 3.2–27.5° |
b = 7.5202 (4) Å | µ = 0.11 mm−1 |
c = 17.1564 (13) Å | T = 120 K |
β = 100.699 (5)° | Block, yellow |
V = 1565.90 (18) Å3 | 0.55 × 0.35 × 0.19 mm |
Z = 4 | |
Data collection top
Bruker–Nonius KappaCCD diffractometer | 3597 independent reflections |
Radiation source: Bruker–Nonius FR591 rotating anode | 2266 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.057 |
Detector resolution: 9.091 pixels mm-1 | θmax = 27.5°, θmin = 3.2° |
ϕ & ω scans | h = −16→16 |
Absorption correction: multi-scan (SADABS; Sheldrick, 2003) | k = −9→9 |
Tmin = 0.951, Tmax = 0.980 | l = −22→22 |
37526 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)] = 0.056 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.178 | H-atom parameters constrained |
S = 1.08 | w = 1/[σ2(Fo2) + (0.0883P)2 + 0.9526P] where P = (Fo2 + 2Fc2)/3 |
3597 reflections | (Δ/σ)max < 0.001 |
227 parameters | Δρmax = 0.33 e Å−3 |
0 restraints | Δρmin = −0.39 e Å−3 |
Crystal data top
C17H14N4O4 | V = 1565.90 (18) Å3 |
Mr = 338.32 | Z = 4 |
Monoclinic, P21/n | Mo Kα radiation |
a = 12.3516 (8) Å | µ = 0.11 mm−1 |
b = 7.5202 (4) Å | T = 120 K |
c = 17.1564 (13) Å | 0.55 × 0.35 × 0.19 mm |
β = 100.699 (5)° | |
Data collection top
Bruker–Nonius KappaCCD diffractometer | 3597 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 2003) | 2266 reflections with I > 2σ(I) |
Tmin = 0.951, Tmax = 0.980 | Rint = 0.057 |
37526 measured reflections | |
Refinement top
R[F2 > 2σ(F2)] = 0.056 | 0 restraints |
wR(F2) = 0.178 | H-atom parameters constrained |
S = 1.08 | Δρmax = 0.33 e Å−3 |
3597 reflections | Δρmin = −0.39 e Å−3 |
227 parameters | |
Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2) top | x | y | z | Uiso*/Ueq | |
N1 | 0.70074 (15) | 0.6050 (3) | 0.23515 (10) | 0.0254 (4) | |
C11 | 0.72777 (18) | 0.5683 (3) | 0.31736 (13) | 0.0238 (5) | |
C12 | 0.65260 (17) | 0.4875 (3) | 0.35802 (13) | 0.0242 (5) | |
N12 | 0.54487 (16) | 0.4217 (3) | 0.31786 (12) | 0.0298 (5) | |
O121 | 0.53573 (13) | 0.3643 (2) | 0.24990 (10) | 0.0343 (4) | |
O122 | 0.46921 (14) | 0.4242 (3) | 0.35533 (11) | 0.0457 (5) | |
C13 | 0.67791 (19) | 0.4603 (3) | 0.43961 (13) | 0.0265 (5) | |
C141 | 0.81336 (19) | 0.4758 (3) | 0.56763 (13) | 0.0268 (5) | |
O141 | 0.90419 (14) | 0.5090 (2) | 0.60530 (9) | 0.0362 (4) | |
O142 | 0.73193 (14) | 0.4072 (2) | 0.59859 (9) | 0.0337 (4) | |
C142 | 0.7569 (2) | 0.3743 (4) | 0.68303 (14) | 0.0403 (6) | |
C14 | 0.78084 (18) | 0.5075 (3) | 0.48066 (13) | 0.0240 (5) | |
C15 | 0.85666 (18) | 0.5852 (3) | 0.44046 (13) | 0.0262 (5) | |
C16 | 0.83036 (18) | 0.6158 (3) | 0.35967 (13) | 0.0263 (5) | |
N2 | 0.75934 (15) | 0.5266 (2) | 0.18323 (11) | 0.0260 (4) | |
C3 | 0.70062 (18) | 0.5674 (3) | 0.11141 (13) | 0.0256 (5) | |
C31 | 0.73660 (19) | 0.5066 (3) | 0.03907 (13) | 0.0262 (5) | |
C32 | 0.8428 (2) | 0.4419 (3) | 0.04009 (14) | 0.0312 (6) | |
C33 | 0.8727 (2) | 0.3790 (4) | −0.02855 (14) | 0.0355 (6) | |
C34 | 0.7980 (2) | 0.3806 (3) | −0.09988 (14) | 0.0355 (6) | |
C35 | 0.6933 (2) | 0.4464 (3) | −0.10232 (14) | 0.0334 (6) | |
C36 | 0.6626 (2) | 0.5094 (3) | −0.03337 (13) | 0.0304 (5) | |
C4 | 0.60744 (18) | 0.6703 (3) | 0.11715 (13) | 0.0264 (5) | |
C5 | 0.61022 (18) | 0.6951 (3) | 0.19633 (13) | 0.0256 (5) | |
N5 | 0.54292 (16) | 0.7858 (3) | 0.23935 (11) | 0.0306 (5) | |
H13 | 0.6249 | 0.4098 | 0.4668 | 0.032* | |
H14A | 0.8229 | 0.2996 | 0.6956 | 0.060* | |
H145 | 0.6947 | 0.3132 | 0.6993 | 0.060* | |
H1C | 0.7702 | 0.4876 | 0.7114 | 0.060* | |
H15 | 0.9274 | 0.6177 | 0.4689 | 0.031* | |
H16 | 0.8829 | 0.6696 | 0.3331 | 0.032* | |
H32 | 0.8949 | 0.4410 | 0.0884 | 0.037* | |
H33 | 0.9450 | 0.3343 | −0.0270 | 0.043* | |
H34 | 0.8190 | 0.3365 | −0.1468 | 0.043* | |
H35 | 0.6422 | 0.4488 | −0.1511 | 0.040* | |
H36 | 0.5903 | 0.5549 | −0.0355 | 0.036* | |
H4 | 0.5535 | 0.7138 | 0.0746 | 0.032* | |
H5A | 0.5834 | 0.8580 | 0.2721 | 0.037* | |
H5B | 0.4926 | 0.8438 | 0.2069 | 0.037* | |
Atomic displacement parameters (Å2) top | U11 | U22 | U33 | U12 | U13 | U23 |
N1 | 0.0251 (10) | 0.0320 (10) | 0.0189 (9) | 0.0044 (8) | 0.0034 (7) | −0.0002 (8) |
C11 | 0.0278 (11) | 0.0245 (11) | 0.0183 (10) | 0.0019 (9) | 0.0019 (9) | −0.0004 (8) |
C12 | 0.0212 (11) | 0.0271 (12) | 0.0232 (11) | 0.0019 (9) | 0.0009 (9) | −0.0014 (9) |
N12 | 0.0281 (10) | 0.0339 (11) | 0.0267 (11) | −0.0029 (8) | 0.0031 (8) | 0.0021 (8) |
O121 | 0.0330 (9) | 0.0399 (10) | 0.0276 (9) | −0.0025 (8) | −0.0010 (7) | −0.0057 (7) |
O122 | 0.0264 (9) | 0.0765 (15) | 0.0358 (10) | −0.0069 (9) | 0.0097 (8) | 0.0020 (9) |
C13 | 0.0274 (12) | 0.0305 (12) | 0.0222 (11) | 0.0012 (9) | 0.0059 (9) | 0.0002 (9) |
C141 | 0.0294 (12) | 0.0286 (12) | 0.0218 (11) | 0.0037 (10) | 0.0025 (9) | −0.0013 (9) |
O141 | 0.0370 (10) | 0.0459 (11) | 0.0228 (9) | −0.0012 (8) | −0.0021 (7) | −0.0004 (7) |
O142 | 0.0358 (9) | 0.0445 (10) | 0.0212 (8) | 0.0021 (8) | 0.0063 (7) | 0.0036 (7) |
C142 | 0.0486 (16) | 0.0518 (16) | 0.0207 (12) | 0.0066 (13) | 0.0069 (11) | 0.0065 (11) |
C14 | 0.0273 (12) | 0.0236 (11) | 0.0204 (11) | 0.0043 (9) | 0.0027 (9) | −0.0025 (8) |
C15 | 0.0261 (11) | 0.0267 (12) | 0.0242 (12) | 0.0005 (9) | 0.0008 (9) | −0.0022 (9) |
C16 | 0.0263 (12) | 0.0271 (11) | 0.0256 (12) | 0.0003 (9) | 0.0051 (9) | 0.0003 (9) |
N2 | 0.0277 (10) | 0.0298 (10) | 0.0208 (9) | 0.0002 (8) | 0.0053 (8) | −0.0003 (8) |
C3 | 0.0284 (11) | 0.0254 (11) | 0.0223 (11) | −0.0040 (9) | 0.0028 (9) | 0.0013 (9) |
C31 | 0.0312 (12) | 0.0255 (11) | 0.0220 (11) | −0.0048 (10) | 0.0050 (9) | 0.0013 (9) |
C32 | 0.0333 (13) | 0.0367 (13) | 0.0234 (12) | −0.0022 (10) | 0.0046 (10) | −0.0003 (10) |
C33 | 0.0362 (14) | 0.0426 (14) | 0.0295 (13) | 0.0026 (11) | 0.0110 (11) | −0.0013 (11) |
C34 | 0.0452 (15) | 0.0389 (14) | 0.0247 (12) | −0.0024 (12) | 0.0124 (11) | −0.0012 (10) |
C35 | 0.0387 (14) | 0.0379 (14) | 0.0222 (12) | −0.0047 (11) | 0.0019 (10) | 0.0003 (10) |
C36 | 0.0327 (13) | 0.0326 (13) | 0.0255 (12) | −0.0003 (10) | 0.0047 (10) | 0.0016 (10) |
C4 | 0.0257 (11) | 0.0304 (12) | 0.0209 (11) | −0.0012 (9) | −0.0015 (9) | 0.0020 (9) |
C5 | 0.0255 (11) | 0.0263 (11) | 0.0240 (11) | −0.0012 (9) | 0.0019 (9) | 0.0019 (9) |
N5 | 0.0285 (10) | 0.0353 (11) | 0.0262 (10) | 0.0052 (9) | 0.0001 (8) | −0.0006 (8) |
Geometric parameters (Å, º) top
N1—C5 | 1.370 (3) | C16—H16 | 0.95 |
N1—N2 | 1.380 (3) | N2—C3 | 1.344 (3) |
N1—C11 | 1.415 (3) | C3—C4 | 1.406 (3) |
C11—C16 | 1.385 (3) | C3—C31 | 1.467 (3) |
C11—C12 | 1.400 (3) | C31—C32 | 1.396 (3) |
C12—C13 | 1.392 (3) | C31—C36 | 1.400 (3) |
C12—N12 | 1.466 (3) | C32—C33 | 1.381 (3) |
N12—O121 | 1.228 (2) | C32—H32 | 0.95 |
N12—O122 | 1.229 (3) | C33—C34 | 1.389 (4) |
C13—C14 | 1.381 (3) | C33—H33 | 0.95 |
C13—H13 | 0.95 | C34—C35 | 1.378 (4) |
C141—O141 | 1.212 (3) | C34—H34 | 0.95 |
C141—O142 | 1.326 (3) | C35—C36 | 1.391 (3) |
C141—C14 | 1.490 (3) | C35—H35 | 0.95 |
O142—C142 | 1.445 (3) | C36—H36 | 0.95 |
C142—H14A | 0.98 | C4—C5 | 1.365 (3) |
C142—H145 | 0.98 | C4—H4 | 0.95 |
C142—H1C | 0.98 | C5—N5 | 1.389 (3) |
C14—C15 | 1.391 (3) | N5—H5A | 0.87 |
C15—C16 | 1.383 (3) | N5—H5B | 0.87 |
C15—H15 | 0.95 | | |
| | | |
C5—N1—N2 | 112.09 (17) | C11—C16—H16 | 119.9 |
C5—N1—C11 | 126.98 (18) | C3—N2—N1 | 103.63 (17) |
N2—N1—C11 | 120.33 (17) | N2—C3—C4 | 111.8 (2) |
C16—C11—C12 | 118.5 (2) | N2—C3—C31 | 120.5 (2) |
C16—C11—N1 | 119.7 (2) | C4—C3—C31 | 127.7 (2) |
C12—C11—N1 | 121.72 (19) | C32—C31—C36 | 118.3 (2) |
C13—C12—C11 | 121.3 (2) | C32—C31—C3 | 122.0 (2) |
C13—C12—N12 | 116.0 (2) | C36—C31—C3 | 119.7 (2) |
C11—C12—N12 | 122.72 (19) | C33—C32—C31 | 120.5 (2) |
O121—N12—O122 | 123.9 (2) | C33—C32—H32 | 119.7 |
O121—N12—C12 | 118.68 (19) | C31—C32—H32 | 119.7 |
O122—N12—C12 | 117.45 (19) | C32—C33—C34 | 120.6 (2) |
C14—C13—C12 | 119.3 (2) | C32—C33—H33 | 119.7 |
C14—C13—H13 | 120.4 | C34—C33—H33 | 119.7 |
C12—C13—H13 | 120.4 | C35—C34—C33 | 119.7 (2) |
O141—C141—O142 | 124.2 (2) | C35—C34—H34 | 120.1 |
O141—C141—C14 | 123.5 (2) | C33—C34—H34 | 120.1 |
O142—C141—C14 | 112.31 (19) | C34—C35—C36 | 120.0 (2) |
C141—O142—C142 | 115.54 (19) | C34—C35—H35 | 120.0 |
O142—C142—H14A | 109.5 | C36—C35—H35 | 120.0 |
O142—C142—H145 | 109.5 | C35—C36—C31 | 120.9 (2) |
H14A—C142—H145 | 109.5 | C35—C36—H36 | 119.6 |
O142—C142—H1C | 109.5 | C31—C36—H36 | 119.6 |
H14A—C142—H1C | 109.5 | C5—C4—C3 | 105.98 (19) |
H145—C142—H1C | 109.5 | C5—C4—H4 | 127.0 |
C13—C14—C15 | 119.7 (2) | C3—C4—H4 | 127.0 |
C13—C14—C141 | 121.4 (2) | C4—C5—N1 | 106.48 (19) |
C15—C14—C141 | 118.8 (2) | C4—C5—N5 | 133.5 (2) |
C16—C15—C14 | 120.8 (2) | N1—C5—N5 | 119.97 (19) |
C16—C15—H15 | 119.6 | C5—N5—H5A | 108.7 |
C14—C15—H15 | 119.6 | C5—N5—H5B | 109.4 |
C15—C16—C11 | 120.3 (2) | H5A—N5—H5B | 110.9 |
C15—C16—H16 | 119.9 | | |
| | | |
C5—N1—C11—C16 | −126.6 (2) | N1—C11—C16—C15 | 178.16 (19) |
N2—N1—C11—C16 | 63.0 (3) | C5—N1—N2—C3 | −1.5 (2) |
C5—N1—C11—C12 | 52.2 (3) | C11—N1—N2—C3 | 170.23 (19) |
N2—N1—C11—C12 | −118.2 (2) | N1—N2—C3—C4 | 0.5 (2) |
C16—C11—C12—C13 | 2.2 (3) | N1—N2—C3—C31 | −179.92 (19) |
N1—C11—C12—C13 | −176.6 (2) | N2—C3—C31—C32 | −15.0 (3) |
C16—C11—C12—N12 | −175.9 (2) | C4—C3—C31—C32 | 164.5 (2) |
N1—C11—C12—N12 | 5.3 (3) | N2—C3—C31—C36 | 163.7 (2) |
C13—C12—N12—O121 | −146.4 (2) | C4—C3—C31—C36 | −16.8 (4) |
C11—C12—N12—O121 | 31.8 (3) | C36—C31—C32—C33 | −1.3 (4) |
C13—C12—N12—O122 | 32.2 (3) | C3—C31—C32—C33 | 177.4 (2) |
C11—C12—N12—O122 | −149.7 (2) | C31—C32—C33—C34 | 0.6 (4) |
C11—C12—C13—C14 | −2.7 (3) | C32—C33—C34—C35 | 0.4 (4) |
N12—C12—C13—C14 | 175.54 (19) | C33—C34—C35—C36 | −0.6 (4) |
O141—C141—O142—C142 | 0.7 (3) | C34—C35—C36—C31 | −0.2 (4) |
C14—C141—O142—C142 | −179.44 (19) | C32—C31—C36—C35 | 1.1 (3) |
C12—C13—C14—C15 | 1.6 (3) | C3—C31—C36—C35 | −177.6 (2) |
C12—C13—C14—C141 | −178.0 (2) | N2—C3—C4—C5 | 0.7 (3) |
O141—C141—C14—C13 | 177.1 (2) | C31—C3—C4—C5 | −178.9 (2) |
O142—C141—C14—C13 | −2.7 (3) | C3—C4—C5—N1 | −1.6 (2) |
O141—C141—C14—C15 | −2.5 (3) | C3—C4—C5—N5 | 179.1 (2) |
O142—C141—C14—C15 | 177.68 (19) | N2—N1—C5—C4 | 2.0 (2) |
C13—C14—C15—C16 | −0.1 (3) | C11—N1—C5—C4 | −169.1 (2) |
C141—C14—C15—C16 | 179.5 (2) | N2—N1—C5—N5 | −178.54 (19) |
C14—C15—C16—C11 | −0.3 (3) | C11—N1—C5—N5 | 10.4 (3) |
C12—C11—C16—C15 | −0.7 (3) | | |
Hydrogen-bond geometry (Å, º) top
D—H···A | D—H | H···A | D···A | D—H···A |
N5—H5A···N2i | 0.87 | 2.33 | 3.131 (3) | 154 |
N5—H5B···O141ii | 0.87 | 2.18 | 3.024 (3) | 163 |
C16—H16···O121i | 0.95 | 2.39 | 3.304 (3) | 161 |
Symmetry codes: (i) −x+3/2, y+1/2, −z+1/2; (ii) x−1/2, −y+3/2, z−1/2. |
(II) methyl 3-nitro-4-[(5-phenyl-1
H-pyrazol-3-yl)amino]benzoate
top
Crystal data top
C17H14N4O4 | F(000) = 1408 |
Mr = 338.32 | Dx = 1.504 Mg m−3 |
Monoclinic, C2/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -C 2yc | Cell parameters from 3420 reflections |
a = 31.0506 (4) Å | θ = 3.1–27.5° |
b = 5.4210 (11) Å | µ = 0.11 mm−1 |
c = 20.7251 (12) Å | T = 120 K |
β = 121.071 (6)° | Lath, orange |
V = 2988.1 (7) Å3 | 0.50 × 0.29 × 0.28 mm |
Z = 8 | |
Data collection top
Bruker–Nonius KappaCCD diffractometer | 3420 independent reflections |
Radiation source: Bruker-Nonius FR591 rotating anode | 2488 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.044 |
Detector resolution: 9.091 pixels mm-1 | θmax = 27.5°, θmin = 3.1° |
ϕ & ω scans | h = −40→40 |
Absorption correction: multi-scan (SADABS; Sheldrick, 2003) | k = −6→7 |
Tmin = 0.947, Tmax = 0.967 | l = −26→26 |
33526 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)] = 0.048 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.134 | H-atom parameters constrained |
S = 1.11 | w = 1/[σ2(Fo2) + (0.0578P)2 + 4.6327P] where P = (Fo2 + 2Fc2)/3 |
3420 reflections | (Δ/σ)max = 0.001 |
227 parameters | Δρmax = 0.28 e Å−3 |
0 restraints | Δρmin = −0.36 e Å−3 |
Crystal data top
C17H14N4O4 | V = 2988.1 (7) Å3 |
Mr = 338.32 | Z = 8 |
Monoclinic, C2/c | Mo Kα radiation |
a = 31.0506 (4) Å | µ = 0.11 mm−1 |
b = 5.4210 (11) Å | T = 120 K |
c = 20.7251 (12) Å | 0.50 × 0.29 × 0.28 mm |
β = 121.071 (6)° | |
Data collection top
Bruker–Nonius KappaCCD diffractometer | 3420 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 2003) | 2488 reflections with I > 2σ(I) |
Tmin = 0.947, Tmax = 0.967 | Rint = 0.044 |
33526 measured reflections | |
Refinement top
R[F2 > 2σ(F2)] = 0.048 | 0 restraints |
wR(F2) = 0.134 | H-atom parameters constrained |
S = 1.11 | Δρmax = 0.28 e Å−3 |
3420 reflections | Δρmin = −0.36 e Å−3 |
227 parameters | |
Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2) top | x | y | z | Uiso*/Ueq | |
N1 | 0.59810 (6) | 0.7513 (3) | 0.60667 (8) | 0.0228 (4) | |
N2 | 0.63253 (6) | 0.7928 (3) | 0.68076 (8) | 0.0214 (3) | |
C3 | 0.66832 (6) | 0.6152 (3) | 0.71231 (9) | 0.0184 (4) | |
C31 | 0.70897 (6) | 0.6193 (3) | 0.79170 (9) | 0.0182 (4) | |
C32 | 0.74389 (7) | 0.4276 (4) | 0.82041 (10) | 0.0219 (4) | |
C33 | 0.78193 (7) | 0.4238 (4) | 0.89564 (10) | 0.0238 (4) | |
C34 | 0.78548 (7) | 0.6121 (4) | 0.94348 (10) | 0.0238 (4) | |
C35 | 0.75135 (7) | 0.8050 (4) | 0.91523 (10) | 0.0238 (4) | |
C36 | 0.71360 (7) | 0.8107 (4) | 0.84023 (10) | 0.0216 (4) | |
C4 | 0.65743 (7) | 0.4485 (3) | 0.65562 (10) | 0.0202 (4) | |
C5 | 0.61378 (6) | 0.5413 (3) | 0.59205 (9) | 0.0195 (4) | |
C51 | 0.54722 (6) | 0.4771 (3) | 0.45658 (9) | 0.0183 (4) | |
C52 | 0.52986 (6) | 0.3312 (3) | 0.39047 (9) | 0.0178 (4) | |
N5 | 0.59048 (6) | 0.4223 (3) | 0.52237 (8) | 0.0212 (3) | |
N52 | 0.55736 (5) | 0.1186 (3) | 0.38848 (8) | 0.0200 (3) | |
O521 | 0.59647 (5) | 0.0523 (3) | 0.44756 (7) | 0.0265 (3) | |
O522 | 0.54173 (5) | 0.0068 (2) | 0.32903 (7) | 0.0259 (3) | |
C53 | 0.48594 (6) | 0.3880 (3) | 0.32318 (10) | 0.0185 (4) | |
C54 | 0.45787 (6) | 0.5917 (3) | 0.31831 (9) | 0.0188 (4) | |
C541 | 0.41265 (7) | 0.6645 (3) | 0.24683 (10) | 0.0194 (4) | |
O541 | 0.38721 (5) | 0.8454 (3) | 0.23954 (7) | 0.0258 (3) | |
O542 | 0.40194 (5) | 0.5128 (2) | 0.18978 (7) | 0.0227 (3) | |
C542 | 0.35970 (7) | 0.5849 (4) | 0.11720 (10) | 0.0251 (4) | |
C55 | 0.47383 (7) | 0.7361 (3) | 0.38303 (10) | 0.0205 (4) | |
C56 | 0.51666 (7) | 0.6817 (3) | 0.44995 (10) | 0.0203 (4) | |
H2 | 0.6277 | 0.9160 | 0.7034 | 0.026* | |
H32 | 0.7416 | 0.2977 | 0.7880 | 0.026* | |
H33 | 0.8055 | 0.2923 | 0.9144 | 0.029* | |
H34 | 0.8111 | 0.6088 | 0.9952 | 0.029* | |
H35 | 0.7539 | 0.9349 | 0.9478 | 0.029* | |
H36 | 0.6907 | 0.9451 | 0.8215 | 0.026* | |
H4 | 0.6754 | 0.3028 | 0.6588 | 0.024* | |
H5 | 0.6041 | 0.2833 | 0.5213 | 0.025* | |
H53 | 0.4752 | 0.2856 | 0.2803 | 0.022* | |
H54A | 0.3296 | 0.6018 | 0.1209 | 0.038* | |
H54B | 0.3538 | 0.4586 | 0.0797 | 0.038* | |
H54C | 0.3671 | 0.7429 | 0.1020 | 0.038* | |
H55 | 0.4544 | 0.8754 | 0.3803 | 0.025* | |
H56 | 0.5261 | 0.7827 | 0.4927 | 0.024* | |
Atomic displacement parameters (Å2) top | U11 | U22 | U33 | U12 | U13 | U23 |
N1 | 0.0213 (8) | 0.0255 (9) | 0.0162 (8) | 0.0016 (7) | 0.0058 (6) | −0.0031 (6) |
N2 | 0.0215 (8) | 0.0225 (8) | 0.0152 (7) | 0.0019 (6) | 0.0059 (6) | −0.0038 (6) |
C3 | 0.0164 (8) | 0.0219 (9) | 0.0178 (8) | 0.0002 (7) | 0.0094 (7) | 0.0000 (7) |
C31 | 0.0175 (8) | 0.0208 (9) | 0.0165 (8) | −0.0024 (7) | 0.0088 (7) | 0.0010 (7) |
C32 | 0.0222 (9) | 0.0220 (9) | 0.0218 (9) | 0.0014 (7) | 0.0115 (8) | −0.0002 (7) |
C33 | 0.0211 (9) | 0.0247 (10) | 0.0236 (9) | 0.0034 (8) | 0.0101 (8) | 0.0043 (8) |
C34 | 0.0196 (9) | 0.0300 (10) | 0.0179 (9) | −0.0019 (8) | 0.0069 (7) | 0.0000 (8) |
C35 | 0.0230 (9) | 0.0263 (10) | 0.0199 (9) | −0.0021 (8) | 0.0096 (8) | −0.0051 (7) |
C36 | 0.0204 (9) | 0.0231 (9) | 0.0194 (9) | 0.0017 (7) | 0.0088 (7) | 0.0006 (7) |
C4 | 0.0204 (9) | 0.0209 (9) | 0.0185 (8) | 0.0000 (7) | 0.0094 (7) | −0.0007 (7) |
C5 | 0.0187 (8) | 0.0234 (9) | 0.0151 (8) | −0.0018 (7) | 0.0079 (7) | −0.0008 (7) |
C51 | 0.0178 (8) | 0.0210 (9) | 0.0166 (8) | −0.0024 (7) | 0.0092 (7) | −0.0004 (7) |
C52 | 0.0182 (8) | 0.0174 (9) | 0.0189 (9) | 0.0003 (7) | 0.0103 (7) | −0.0002 (7) |
N5 | 0.0200 (7) | 0.0223 (8) | 0.0176 (7) | 0.0018 (6) | 0.0070 (6) | −0.0034 (6) |
N52 | 0.0194 (7) | 0.0218 (8) | 0.0176 (7) | −0.0011 (6) | 0.0087 (6) | −0.0010 (6) |
O521 | 0.0199 (6) | 0.0297 (8) | 0.0203 (7) | 0.0060 (6) | 0.0036 (5) | −0.0034 (5) |
O522 | 0.0295 (7) | 0.0262 (7) | 0.0184 (6) | 0.0033 (6) | 0.0098 (6) | −0.0048 (5) |
C53 | 0.0194 (8) | 0.0196 (9) | 0.0164 (8) | −0.0032 (7) | 0.0091 (7) | −0.0017 (7) |
C54 | 0.0172 (8) | 0.0207 (9) | 0.0178 (8) | −0.0011 (7) | 0.0086 (7) | 0.0010 (7) |
C541 | 0.0198 (8) | 0.0208 (9) | 0.0185 (9) | −0.0017 (7) | 0.0105 (7) | −0.0015 (7) |
O541 | 0.0238 (7) | 0.0282 (7) | 0.0206 (7) | 0.0062 (6) | 0.0080 (6) | −0.0011 (5) |
O542 | 0.0217 (6) | 0.0240 (7) | 0.0165 (6) | 0.0009 (5) | 0.0056 (5) | −0.0031 (5) |
C542 | 0.0233 (9) | 0.0301 (10) | 0.0152 (9) | −0.0007 (8) | 0.0052 (7) | −0.0012 (8) |
C55 | 0.0209 (9) | 0.0196 (9) | 0.0202 (9) | 0.0013 (7) | 0.0102 (7) | −0.0001 (7) |
C56 | 0.0198 (8) | 0.0231 (9) | 0.0175 (8) | −0.0031 (7) | 0.0094 (7) | −0.0034 (7) |
Geometric parameters (Å, º) top
N1—C5 | 1.333 (2) | C51—C52 | 1.425 (2) |
N1—N2 | 1.363 (2) | C52—C53 | 1.391 (2) |
N2—C3 | 1.356 (2) | C53—C54 | 1.378 (3) |
N2—H2 | 0.87 | C54—C55 | 1.404 (2) |
C3—C4 | 1.379 (2) | C55—C56 | 1.370 (3) |
C3—C31 | 1.469 (2) | C56—C51 | 1.419 (3) |
C31—C32 | 1.394 (3) | C52—N52 | 1.448 (2) |
C31—C36 | 1.400 (3) | N5—H5 | 0.87 |
C32—C33 | 1.388 (2) | N52—O521 | 1.2522 (19) |
C32—H32 | 0.95 | N52—O522 | 1.2262 (19) |
C33—C34 | 1.387 (3) | C53—H53 | 0.95 |
C33—H33 | 0.95 | C54—C541 | 1.475 (2) |
C34—C35 | 1.385 (3) | C541—O541 | 1.219 (2) |
C34—H34 | 0.95 | C541—O542 | 1.334 (2) |
C35—C36 | 1.382 (3) | O542—C542 | 1.449 (2) |
C35—H35 | 0.95 | C542—H54A | 0.98 |
C36—H36 | 0.95 | C542—H54B | 0.98 |
C4—C5 | 1.408 (2) | C542—H54C | 0.98 |
C4—H4 | 0.95 | C55—H55 | 0.95 |
C5—N5 | 1.395 (2) | C56—H56 | 0.95 |
C51—N5 | 1.364 (2) | | |
| | | |
C5—N1—N2 | 103.36 (14) | C56—C51—C52 | 116.00 (16) |
C3—N2—N1 | 113.40 (15) | C53—C52—C51 | 121.99 (16) |
C3—N2—H2 | 127.5 | C53—C52—N52 | 115.77 (15) |
N1—N2—H2 | 118.7 | C51—C52—N52 | 122.23 (15) |
N2—C3—C4 | 105.95 (15) | C51—N5—C5 | 130.60 (16) |
N2—C3—C31 | 123.09 (16) | C51—N5—H5 | 113.8 |
C4—C3—C31 | 130.96 (16) | C5—N5—H5 | 115.3 |
C32—C31—C36 | 118.49 (16) | O522—N52—O521 | 121.46 (15) |
C32—C31—C3 | 119.75 (16) | O522—N52—C52 | 119.26 (14) |
C36—C31—C3 | 121.76 (16) | O521—N52—C52 | 119.28 (14) |
C33—C32—C31 | 120.94 (17) | C54—C53—C52 | 120.40 (16) |
C33—C32—H32 | 119.5 | C54—C53—H53 | 119.8 |
C31—C32—H32 | 119.5 | C52—C53—H53 | 119.8 |
C34—C33—C32 | 119.98 (17) | C53—C54—C55 | 118.61 (16) |
C34—C33—H33 | 120.0 | C53—C54—C541 | 121.75 (16) |
C32—C33—H33 | 120.0 | C55—C54—C541 | 119.61 (16) |
C35—C34—C33 | 119.47 (17) | O541—C541—O542 | 122.48 (16) |
C35—C34—H34 | 120.3 | O541—C541—C54 | 124.05 (16) |
C33—C34—H34 | 120.3 | O542—C541—C54 | 113.46 (15) |
C36—C35—C34 | 120.81 (18) | C541—O542—C542 | 115.60 (14) |
C36—C35—H35 | 119.6 | O542—C542—H54A | 109.5 |
C34—C35—H35 | 119.6 | O542—C542—H54B | 109.5 |
C35—C36—C31 | 120.29 (17) | H54A—C542—H54B | 109.5 |
C35—C36—H36 | 119.9 | O542—C542—H54C | 109.5 |
C31—C36—H36 | 119.9 | H54A—C542—H54C | 109.5 |
C3—C4—C5 | 104.91 (16) | H54B—C542—H54C | 109.5 |
C3—C4—H4 | 127.5 | C56—C55—C54 | 121.78 (17) |
C5—C4—H4 | 127.5 | C56—C55—H55 | 119.1 |
N1—C5—N5 | 125.10 (16) | C54—C55—H55 | 119.1 |
N1—C5—C4 | 112.37 (16) | C55—C56—C51 | 121.18 (17) |
N5—C5—C4 | 122.53 (17) | C55—C56—H56 | 119.4 |
N5—C51—C56 | 122.09 (16) | C51—C56—H56 | 119.4 |
N5—C51—C52 | 121.92 (16) | | |
| | | |
C5—N1—N2—C3 | −0.7 (2) | C56—C51—C52—N52 | 179.27 (15) |
N1—N2—C3—C4 | 0.9 (2) | C56—C51—N5—C5 | −1.0 (3) |
N1—N2—C3—C31 | −179.26 (15) | C52—C51—N5—C5 | 179.37 (17) |
N2—C3—C31—C32 | 178.86 (17) | N1—C5—N5—C51 | −3.7 (3) |
C4—C3—C31—C32 | −1.4 (3) | C4—C5—N5—C51 | 176.24 (18) |
N2—C3—C31—C36 | −0.6 (3) | C53—C52—N52—O522 | 1.8 (2) |
C4—C3—C31—C36 | 179.14 (18) | C51—C52—N52—O522 | −176.73 (16) |
C36—C31—C32—C33 | 1.1 (3) | C53—C52—N52—O521 | −177.92 (15) |
C3—C31—C32—C33 | −178.41 (16) | C51—C52—N52—O521 | 3.6 (2) |
C31—C32—C33—C34 | 0.2 (3) | C51—C52—C53—C54 | 0.7 (3) |
C32—C33—C34—C35 | −1.1 (3) | N52—C52—C53—C54 | −177.77 (15) |
C33—C34—C35—C36 | 0.6 (3) | C52—C53—C54—C55 | −1.7 (3) |
C34—C35—C36—C31 | 0.7 (3) | C52—C53—C54—C541 | 176.70 (16) |
C32—C31—C36—C35 | −1.5 (3) | C53—C54—C541—O541 | −178.65 (17) |
C3—C31—C36—C35 | 177.94 (17) | C55—C54—C541—O541 | −0.3 (3) |
N2—C3—C4—C5 | −0.71 (19) | C53—C54—C541—O542 | 1.1 (2) |
C31—C3—C4—C5 | 179.51 (18) | C55—C54—C541—O542 | 179.46 (15) |
N2—N1—C5—N5 | −179.79 (16) | O541—C541—O542—C542 | 3.5 (2) |
N2—N1—C5—C4 | 0.2 (2) | C54—C541—O542—C542 | −176.23 (15) |
C3—C4—C5—N1 | 0.3 (2) | C53—C54—C55—C56 | 1.0 (3) |
C3—C4—C5—N5 | −179.67 (16) | C541—C54—C55—C56 | −177.40 (17) |
N5—C51—C52—C53 | −179.51 (16) | C54—C55—C56—C51 | 0.6 (3) |
C56—C51—C52—C53 | 0.8 (3) | N5—C51—C56—C55 | 178.84 (17) |
N5—C51—C52—N52 | −1.1 (3) | C52—C51—C56—C55 | −1.5 (3) |
Hydrogen-bond geometry (Å, º) top
D—H···A | D—H | H···A | D···A | D—H···A |
N5—H5···O521 | 0.87 | 1.89 | 2.600 (2) | 137 |
N2—H2···O541i | 0.87 | 1.96 | 2.828 (2) | 171 |
C36—H36···O541i | 0.95 | 2.36 | 3.266 (3) | 159 |
C53—H53···O522ii | 0.95 | 2.54 | 3.487 (2) | 173 |
Symmetry codes: (i) −x+1, −y+2, −z+1; (ii) −x+1, y, −z+1/2. |
Experimental details
| (I) | (II) |
Crystal data |
Chemical formula | C17H14N4O4 | C17H14N4O4 |
Mr | 338.32 | 338.32 |
Crystal system, space group | Monoclinic, P21/n | Monoclinic, C2/c |
Temperature (K) | 120 | 120 |
a, b, c (Å) | 12.3516 (8), 7.5202 (4), 17.1564 (13) | 31.0506 (4), 5.4210 (11), 20.7251 (12) |
β (°) | 100.699 (5) | 121.071 (6) |
V (Å3) | 1565.90 (18) | 2988.1 (7) |
Z | 4 | 8 |
Radiation type | Mo Kα | Mo Kα |
µ (mm−1) | 0.11 | 0.11 |
Crystal size (mm) | 0.55 × 0.35 × 0.19 | 0.50 × 0.29 × 0.28 |
|
Data collection |
Diffractometer | Bruker–Nonius KappaCCD diffractometer | Bruker–Nonius KappaCCD diffractometer |
Absorption correction | Multi-scan (SADABS; Sheldrick, 2003) | Multi-scan (SADABS; Sheldrick, 2003) |
Tmin, Tmax | 0.951, 0.980 | 0.947, 0.967 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 37526, 3597, 2266 | 33526, 3420, 2488 |
Rint | 0.057 | 0.044 |
(sin θ/λ)max (Å−1) | 0.650 | 0.650 |
|
Refinement |
R[F2 > 2σ(F2)], wR(F2), S | 0.056, 0.178, 1.08 | 0.048, 0.134, 1.11 |
No. of reflections | 3597 | 3420 |
No. of parameters | 227 | 227 |
H-atom treatment | H-atom parameters constrained | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.33, −0.39 | 0.28, −0.36 |
Hydrogen-bond geometry (Å, º) for (I) top
D—H···A | D—H | H···A | D···A | D—H···A |
N5—H5A···N2i | 0.87 | 2.33 | 3.131 (3) | 154 |
N5—H5B···O141ii | 0.87 | 2.18 | 3.024 (3) | 163 |
C16—H16···O121i | 0.95 | 2.39 | 3.304 (3) | 161 |
Symmetry codes: (i) −x+3/2, y+1/2, −z+1/2; (ii) x−1/2, −y+3/2, z−1/2. |
Selected bond lengths (Å) for (II) topC51—N5 | 1.364 (2) | C55—C56 | 1.370 (3) |
C51—C52 | 1.425 (2) | C56—C51 | 1.419 (3) |
C52—C53 | 1.391 (2) | C52—N52 | 1.448 (2) |
C53—C54 | 1.378 (3) | N52—O521 | 1.2522 (19) |
C54—C55 | 1.404 (2) | N52—O522 | 1.2262 (19) |
Hydrogen-bond geometry (Å, º) for (II) top
D—H···A | D—H | H···A | D···A | D—H···A |
N5—H5···O521 | 0.87 | 1.89 | 2.600 (2) | 137 |
N2—H2···O541i | 0.87 | 1.96 | 2.828 (2) | 171 |
C36—H36···O541i | 0.95 | 2.36 | 3.266 (3) | 159 |
C53—H53···O522ii | 0.95 | 2.54 | 3.487 (2) | 173 |
Symmetry codes: (i) −x+1, −y+2, −z+1; (ii) −x+1, y, −z+1/2. |
We report here the molecular and supramolecular structures of the title compounds, (I) and (II) (Figs. 1 and 2), which are the products from the two alternative pathways for the reaction of methyl 4-fluoro-3-nitrobenzoate with 5-amino-3-phenylpyrazole. The reaction in which the atom N1 of the pyrazole ring acts as the nucleophile generates compound (I), while compound (II) is formed in the reaction in which the amino N atom of the pyrazole ring acts as the nucleophile (see first scheme below). The product mixture appears to be very sensitive to the polarity of the solvent employed; in a 1:7 v/v mixture of dimethylsulfoxide and methanol as the solvent, compounds (I) and (II) are formed in equimolar quantities, but compound (II) was the sole product isolated from the corresponding reaction in neat dimethylsulfoxide. An analogous reaction in neat dimethylsulfoxide using 5-amino-3-methylpyrazole in place of 5-amino-3-phenylpyrazole generates only compound (III), the direct analogue of compound (II) (Portilla et al., 2007). Compound (I) and its analogues should prove to be useful for the synthesis of pyrazolobenzotriazepines, which have applications as drug, agrochemical and dye intermediates (Tachibana & Kaneko, 1989).
In (I), the C—C bond distances within the aryl ring fall in the range 1.381 (3)–1.400 (3) Å, consistent with essentially unperturbed aromatic delocalization, while the remaining bond distances are all typical of their types (Allen et al., 1987). By contrast, in (II), the C53—C54 and C51—C56 bond distances are both significantly shorter than the remaining bonds in this ring (Table 2), while the C52—N52 bond is short for its type. In addition, the N52—O521 bond, which participates in an intramolecular hydrogen bond (Table 3), is long for its type. These observations, taken all together, provide evidence for the polarized forms (IIa) and (IIb) (see scheme below) as important contributors of the overall molecular–electronic structure of compound (II). A similar conclusion was drawn from the intramolecular geometry of compound (III) (Portilla et al., 2007).
The molecules of (I) are linked into sheets by a combination of N—H···N, N—H···O and C—H···O hydrogen bonds (Table 1), and the formation of the sheet is readily analysed in terms of two simple one-dimensional substructures. The atoms N5 and C16 in the molecule at (x, y, z) act as hydrogen-bond donors to pyrazole atom N2 and nitro atom O121, respectively, both in the molecule at (3/2 - x, 1/2 + y, 1/2 - z), so forming a C(5)C(6)[R22(13) chain of rings (Bernstein et al., 1995) running parallel to the [010] direction and generated by the 21 screw axis along (3/4, y, 1/4) (Fig. 3). In the second substructure, atom N5 at (x, y, z) acts as a hydrogen-bond donor to ketonic atom O141 in the molecule at (-1/2 + x, 3/2 - y, -1/2 + z), so forming a simple C(10) chain running parallel to the [101] direction and generated by the n-glide plane at y = 3/4 (Fig. 4). The combination of the chains parallel to [010] and [101] generates a sheet parallel to (101), but there are no significant direction-specific interactions between adjacent sheets.
In addition, to the intramolecular N—H···O hydrogen bond, the structure of (II) contains three significant intermolecular hydrogen bonds (Table 3), which combine to generate a one-dimensional hydrogen-bonded structure of considerable elegance. Atoms N2 and C36 in the molecule at (x, y, z) both act as hydrogen-bond donors to carbonyl atom O541 in the molecule at (1 - x, 2 - y, 1 - z), thereby generating by inversion a cyclic dimer containing concentric R22(22) and R22(26) rings, embedding two symmetry-related R12(7) rings (Fig. 5). In addition atom C53 in the molecule at (x, y, z) acts as a hydrogen-bond donor to nitro atom O522 in the molecule at (1 - x, y, 1/2 - z), so forming a further cyclic motif, this time an R22(10) ring generated by the twofold rotation axis along (1/2, y, 1/4). Propagation of these two motifs by successive inversion and rotation then generates a complex chain of edge-fused rings running parallel to the [001] direction (Fig. 6). Two chains of this type, related to one another by the C-centring operation, pass through each unit cell, but there are no significant direction-specific interactions between adjacent chains.
By contrast with the complexity of the chain of rings formed by (II), the methyl analogue (III) forms a simpler chain of edge-fused rings containing alternating R22(16) and R22(22) rings, both generated by inversion using C—H···O and N—H···O hydrogen bonds, respectively (Portilla et al., 2007).