organic compounds
(4Z)-4-[(2-Chloroanilino)(phenyl)methylidene]-3-methyl-1-phenyl-1H-pyrazol-5(4H)-one
aSchool of Chemical Engineering and Technology, Harbin Institute of Technology, Harbin 150001, People's Republic of China, bSchool of Science, Harbin University, Harbin 150080, People's Republic of China, cSchool of Science, Northeast Forestry University, Harbin 150040, People's Republic of China, and dDepartment of Chemistry, East China Normal University, Shanghai 200062, People's Republic of China
*Correspondence e-mail: lining1957@126.com
The title compound, C23H18ClN3O, exists in an enamine–keto form with the amino group involved in an intramolecular N—H⋯O hydrogen bond. The five-membered ring is nearly planar, the largest deviation being 0.0004 (7) Å, and makes dihedral angles of 16.62 (6), 41.89 (5) and 71.27 (4)° with the phenyl rings. In the crystal, weak C—H⋯O hydrogen bonds link the molecules into supramolecular chains along the b axis.
Related literature
For general background to H-pyrazol-5(4H)-one and their pharmaceutical and agrochemical applications, see: Casas et al. (2007); Zhang et al. (2008). For related structures, see: Zhang et al. (2007); Li et al. (2009); Chi et al. (2010).
derived from 1-phenyl-3-methyl-4-benzoyl-1Experimental
Crystal data
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Refinement
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Data collection: SMART (Bruker, 1998); cell SAINT (Bruker, 1998); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL.
Supporting information
10.1107/S1600536812020004/zq2164sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536812020004/zq2164Isup2.hkl
Supporting information file. DOI: 10.1107/S1600536812020004/zq2164Isup3.cml
A mixture of a 10 ml PMBP (2 mmol, 0.5566 g) anhydrous ethanol solution, and a 0.21 ml of an o-chloroaniline (2 mmol, 0.2545 g) solution was refluxed for ca 5 h, with addition of a few drops of glacial acetic acid as a catalyst. The ethanol was removed by evaporation and the resulting green precipitate formed was filtered off, washed with cold anhydrous ethanol and dried in air. Yellow block single crystals suitable for analysis were obtained by slow evaporation of a solution in anhydrous ethanol at room temperature for a few days.
The H3A atom bonded to N3 was located in a difference Fourier map and refined freely. The other H atoms were placed in calculated positions, with C—H = 0.93 Å for phenyl, 0.96 Å for methyl H atoms, and refined as riding, with Uiso(H) = 1.2Ueq(C) for phenyl H, and 1.5Ueq(C) for methyl H.
Data collection: SMART (Bruker, 1998); cell
SAINT (Bruker, 1998); data reduction: SAINT (Bruker, 1998); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL (Sheldrick, 2008).Fig. 1. The molecular structure of the title compound (thermal ellipsoids are shown at the 30% probability level). |
C23H18ClN3O | F(000) = 808.0 |
Mr = 387.85 | Dx = 1.374 Mg m−3 |
Monoclinic, P21/n | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P2yn | Cell parameters from 9949 reflections |
a = 9.0425 (3) Å | θ = 3.1–28.2° |
b = 18.5180 (7) Å | µ = 0.22 mm−1 |
c = 11.1983 (4) Å | T = 296 K |
β = 90.423 (1)° | Block, yellow |
V = 1875.09 (12) Å3 | 0.22 × 0.20 × 0.18 mm |
Z = 4 |
Bruker SMART CCD diffractometer | 4637 independent reflections |
Radiation source: fine-focus sealed tube | 4251 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.013 |
ω scans | θmax = 28.2°, θmin = 2.1° |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | h = −11→12 |
Tmin = 0.951, Tmax = 0.959 | k = −24→23 |
17018 measured reflections | l = −14→14 |
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)] = 0.034 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.095 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.04 | w = 1/[σ2(Fo2) + (0.0482P)2 + 0.9306P] where P = (Fo2 + 2Fc2)/3 |
4613 reflections | (Δ/σ)max < 0.001 |
258 parameters | Δρmax = 0.37 e Å−3 |
0 restraints | Δρmin = −0.34 e Å−3 |
C23H18ClN3O | V = 1875.09 (12) Å3 |
Mr = 387.85 | Z = 4 |
Monoclinic, P21/n | Mo Kα radiation |
a = 9.0425 (3) Å | µ = 0.22 mm−1 |
b = 18.5180 (7) Å | T = 296 K |
c = 11.1983 (4) Å | 0.22 × 0.20 × 0.18 mm |
β = 90.423 (1)° |
Bruker SMART CCD diffractometer | 4637 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | 4251 reflections with I > 2σ(I) |
Tmin = 0.951, Tmax = 0.959 | Rint = 0.013 |
17018 measured reflections |
R[F2 > 2σ(F2)] = 0.034 | 0 restraints |
wR(F2) = 0.095 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.04 | Δρmax = 0.37 e Å−3 |
4613 reflections | Δρmin = −0.34 e Å−3 |
258 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 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 | ||
C1 | 0.86725 (13) | −0.06692 (6) | −0.09829 (10) | 0.0186 (2) | |
C2 | 0.87873 (15) | −0.07367 (7) | −0.22145 (11) | 0.0238 (2) | |
H2 | 0.8476 | −0.0364 | −0.2713 | 0.029* | |
C3 | 0.93725 (15) | −0.13668 (7) | −0.26969 (12) | 0.0271 (3) | |
H3 | 0.9454 | −0.1413 | −0.3521 | 0.033* | |
C4 | 0.98343 (14) | −0.19250 (7) | −0.19629 (12) | 0.0253 (3) | |
H4 | 1.0181 | −0.2354 | −0.2291 | 0.030* | |
C5 | 0.97757 (15) | −0.18398 (7) | −0.07385 (12) | 0.0284 (3) | |
H5 | 1.0116 | −0.2208 | −0.0242 | 0.034* | |
C6 | 0.92153 (15) | −0.12112 (7) | −0.02397 (11) | 0.0260 (3) | |
H6 | 0.9203 | −0.1153 | 0.0585 | 0.031* | |
C7 | 0.70636 (14) | 0.10296 (6) | −0.05496 (10) | 0.0196 (2) | |
C8 | 0.67068 (17) | 0.17489 (7) | −0.10804 (11) | 0.0269 (3) | |
H8A | 0.7155 | 0.1787 | −0.1852 | 0.040* | |
H8B | 0.7083 | 0.2124 | −0.0570 | 0.040* | |
H8C | 0.5654 | 0.1798 | −0.1161 | 0.040* | |
C9 | 0.68060 (13) | 0.07593 (6) | 0.06368 (10) | 0.0187 (2) | |
C10 | 0.74394 (13) | 0.00384 (6) | 0.06478 (10) | 0.0198 (2) | |
C11 | 0.62430 (12) | 0.10790 (6) | 0.16590 (10) | 0.0164 (2) | |
C12 | 0.56486 (12) | 0.18268 (6) | 0.16522 (10) | 0.0169 (2) | |
C13 | 0.43881 (14) | 0.20000 (7) | 0.09874 (11) | 0.0234 (2) | |
H13 | 0.3877 | 0.1641 | 0.0577 | 0.028* | |
C14 | 0.38969 (16) | 0.27111 (8) | 0.09393 (13) | 0.0326 (3) | |
H14 | 0.3046 | 0.2826 | 0.0509 | 0.039* | |
C15 | 0.46709 (18) | 0.32468 (7) | 0.15296 (14) | 0.0359 (3) | |
H15 | 0.4353 | 0.3723 | 0.1478 | 0.043* | |
C16 | 0.59174 (17) | 0.30782 (7) | 0.21975 (13) | 0.0318 (3) | |
H16 | 0.6434 | 0.3442 | 0.2594 | 0.038* | |
C17 | 0.63988 (14) | 0.23657 (7) | 0.22775 (11) | 0.0225 (2) | |
H17 | 0.7218 | 0.2250 | 0.2747 | 0.027* | |
C18 | 0.57642 (12) | 0.08798 (6) | 0.38216 (9) | 0.0161 (2) | |
C19 | 0.43971 (13) | 0.12143 (6) | 0.39789 (10) | 0.0189 (2) | |
H19 | 0.3851 | 0.1365 | 0.3317 | 0.023* | |
C20 | 0.38483 (13) | 0.13232 (6) | 0.51203 (11) | 0.0211 (2) | |
H20 | 0.2938 | 0.1548 | 0.5218 | 0.025* | |
C21 | 0.46478 (14) | 0.10990 (6) | 0.61183 (10) | 0.0213 (2) | |
H21 | 0.4270 | 0.1172 | 0.6879 | 0.026* | |
C22 | 0.60091 (13) | 0.07666 (6) | 0.59773 (10) | 0.0196 (2) | |
H22 | 0.6550 | 0.0616 | 0.6642 | 0.024* | |
C23 | 0.65570 (12) | 0.06605 (6) | 0.48371 (10) | 0.0166 (2) | |
Cl1 | 0.82565 (3) | 0.023579 (16) | 0.46642 (3) | 0.02280 (9) | |
H3A | 0.678 (2) | 0.0288 (10) | 0.2610 (16) | 0.034 (5)* | |
N1 | 0.79928 (12) | −0.00523 (5) | −0.04860 (8) | 0.0200 (2) | |
N2 | 0.77460 (12) | 0.05536 (5) | −0.12101 (9) | 0.0210 (2) | |
N3 | 0.63332 (12) | 0.07069 (6) | 0.26879 (8) | 0.0194 (2) | |
O1 | 0.74879 (11) | −0.04063 (5) | 0.14826 (8) | 0.0267 (2) |
U11 | U22 | U33 | U12 | U13 | U23 | |
C1 | 0.0193 (5) | 0.0172 (5) | 0.0194 (5) | 0.0015 (4) | 0.0010 (4) | −0.0038 (4) |
C2 | 0.0306 (6) | 0.0216 (6) | 0.0193 (5) | 0.0019 (5) | 0.0034 (5) | −0.0022 (4) |
C3 | 0.0305 (6) | 0.0278 (7) | 0.0232 (6) | 0.0001 (5) | 0.0044 (5) | −0.0099 (5) |
C4 | 0.0191 (5) | 0.0218 (6) | 0.0349 (7) | 0.0013 (4) | 0.0014 (5) | −0.0117 (5) |
C5 | 0.0285 (6) | 0.0243 (6) | 0.0322 (7) | 0.0094 (5) | −0.0021 (5) | −0.0023 (5) |
C6 | 0.0308 (6) | 0.0258 (6) | 0.0214 (6) | 0.0095 (5) | −0.0013 (5) | −0.0023 (5) |
C7 | 0.0268 (6) | 0.0176 (5) | 0.0143 (5) | 0.0023 (4) | 0.0000 (4) | 0.0007 (4) |
C8 | 0.0436 (7) | 0.0197 (6) | 0.0177 (5) | 0.0079 (5) | 0.0046 (5) | 0.0039 (4) |
C9 | 0.0255 (6) | 0.0154 (5) | 0.0152 (5) | 0.0036 (4) | 0.0005 (4) | 0.0012 (4) |
C10 | 0.0256 (6) | 0.0175 (5) | 0.0164 (5) | 0.0044 (4) | 0.0019 (4) | 0.0001 (4) |
C11 | 0.0179 (5) | 0.0160 (5) | 0.0152 (5) | 0.0010 (4) | −0.0007 (4) | 0.0006 (4) |
C12 | 0.0195 (5) | 0.0155 (5) | 0.0158 (5) | 0.0015 (4) | 0.0042 (4) | 0.0011 (4) |
C13 | 0.0227 (6) | 0.0242 (6) | 0.0232 (6) | 0.0036 (5) | 0.0015 (4) | 0.0052 (4) |
C14 | 0.0303 (7) | 0.0321 (7) | 0.0356 (7) | 0.0139 (6) | 0.0092 (5) | 0.0139 (6) |
C15 | 0.0444 (8) | 0.0186 (6) | 0.0452 (8) | 0.0103 (6) | 0.0247 (7) | 0.0082 (6) |
C16 | 0.0402 (8) | 0.0192 (6) | 0.0362 (7) | −0.0072 (5) | 0.0213 (6) | −0.0073 (5) |
C17 | 0.0229 (6) | 0.0225 (6) | 0.0222 (5) | −0.0036 (4) | 0.0078 (4) | −0.0049 (4) |
C18 | 0.0201 (5) | 0.0140 (5) | 0.0143 (5) | −0.0007 (4) | 0.0023 (4) | 0.0001 (4) |
C19 | 0.0202 (5) | 0.0171 (5) | 0.0193 (5) | 0.0009 (4) | 0.0017 (4) | 0.0016 (4) |
C20 | 0.0222 (5) | 0.0159 (5) | 0.0251 (6) | 0.0001 (4) | 0.0074 (4) | −0.0003 (4) |
C21 | 0.0290 (6) | 0.0176 (5) | 0.0175 (5) | −0.0040 (4) | 0.0077 (4) | −0.0023 (4) |
C22 | 0.0263 (6) | 0.0174 (5) | 0.0151 (5) | −0.0040 (4) | −0.0003 (4) | 0.0007 (4) |
C23 | 0.0167 (5) | 0.0149 (5) | 0.0182 (5) | −0.0015 (4) | 0.0008 (4) | 0.0005 (4) |
Cl1 | 0.01928 (14) | 0.02670 (16) | 0.02240 (15) | 0.00267 (10) | −0.00047 (10) | 0.00295 (10) |
N1 | 0.0294 (5) | 0.0163 (5) | 0.0142 (4) | 0.0054 (4) | 0.0020 (4) | 0.0006 (3) |
N2 | 0.0311 (5) | 0.0170 (5) | 0.0150 (4) | 0.0037 (4) | 0.0003 (4) | 0.0018 (4) |
N3 | 0.0254 (5) | 0.0179 (5) | 0.0148 (4) | 0.0072 (4) | 0.0028 (4) | 0.0007 (3) |
O1 | 0.0408 (5) | 0.0208 (4) | 0.0186 (4) | 0.0113 (4) | 0.0073 (4) | 0.0054 (3) |
C1—C2 | 1.3895 (16) | C12—C13 | 1.3941 (16) |
C1—C6 | 1.3910 (17) | C13—C14 | 1.3906 (18) |
C1—N1 | 1.4133 (14) | C13—H13 | 0.9300 |
C2—C3 | 1.3920 (17) | C14—C15 | 1.380 (2) |
C2—H2 | 0.9300 | C14—H14 | 0.9300 |
C3—C4 | 1.383 (2) | C15—C16 | 1.384 (2) |
C3—H3 | 0.9300 | C15—H15 | 0.9300 |
C4—C5 | 1.3816 (19) | C16—C17 | 1.3921 (19) |
C4—H4 | 0.9300 | C16—H16 | 0.9300 |
C5—C6 | 1.3885 (18) | C17—H17 | 0.9300 |
C5—H5 | 0.9300 | C18—C19 | 1.3950 (16) |
C6—H6 | 0.9300 | C18—C23 | 1.4000 (15) |
C7—N2 | 1.3084 (15) | C18—N3 | 1.4102 (14) |
C7—C9 | 1.4403 (15) | C19—C20 | 1.3892 (16) |
C7—C8 | 1.4928 (16) | C19—H19 | 0.9300 |
C8—H8A | 0.9600 | C20—C21 | 1.3900 (18) |
C8—H8B | 0.9600 | C20—H20 | 0.9300 |
C8—H8C | 0.9600 | C21—C22 | 1.3863 (17) |
C9—C11 | 1.3887 (15) | C21—H21 | 0.9300 |
C9—C10 | 1.4526 (16) | C22—C23 | 1.3870 (15) |
C10—O1 | 1.2464 (14) | C22—H22 | 0.9300 |
C10—N1 | 1.3784 (14) | C23—Cl1 | 1.7384 (11) |
C11—N3 | 1.3445 (14) | N1—N2 | 1.4012 (13) |
C11—C12 | 1.4855 (15) | N3—H3A | 0.877 (19) |
C12—C17 | 1.3925 (16) | ||
C2—C1—C6 | 120.02 (11) | C14—C13—H13 | 120.1 |
C2—C1—N1 | 119.96 (11) | C12—C13—H13 | 120.1 |
C6—C1—N1 | 120.02 (10) | C15—C14—C13 | 120.10 (13) |
C1—C2—C3 | 119.47 (12) | C15—C14—H14 | 120.0 |
C1—C2—H2 | 120.3 | C13—C14—H14 | 120.0 |
C3—C2—H2 | 120.3 | C14—C15—C16 | 120.34 (12) |
C4—C3—C2 | 120.65 (12) | C14—C15—H15 | 119.8 |
C4—C3—H3 | 119.7 | C16—C15—H15 | 119.8 |
C2—C3—H3 | 119.7 | C15—C16—C17 | 120.11 (13) |
C5—C4—C3 | 119.39 (12) | C15—C16—H16 | 119.9 |
C5—C4—H4 | 120.3 | C17—C16—H16 | 119.9 |
C3—C4—H4 | 120.3 | C16—C17—C12 | 119.73 (12) |
C4—C5—C6 | 120.78 (12) | C16—C17—H17 | 120.1 |
C4—C5—H5 | 119.6 | C12—C17—H17 | 120.1 |
C6—C5—H5 | 119.6 | C19—C18—C23 | 118.37 (10) |
C5—C6—C1 | 119.50 (12) | C19—C18—N3 | 122.96 (10) |
C5—C6—H6 | 120.2 | C23—C18—N3 | 118.51 (10) |
C1—C6—H6 | 120.2 | C20—C19—C18 | 120.23 (11) |
N2—C7—C9 | 111.56 (10) | C20—C19—H19 | 119.9 |
N2—C7—C8 | 118.52 (10) | C18—C19—H19 | 119.9 |
C9—C7—C8 | 129.90 (10) | C19—C20—C21 | 120.61 (11) |
C7—C8—H8A | 109.5 | C19—C20—H20 | 119.7 |
C7—C8—H8B | 109.5 | C21—C20—H20 | 119.7 |
H8A—C8—H8B | 109.5 | C22—C21—C20 | 119.87 (11) |
C7—C8—H8C | 109.5 | C22—C21—H21 | 120.1 |
H8A—C8—H8C | 109.5 | C20—C21—H21 | 120.1 |
H8B—C8—H8C | 109.5 | C21—C22—C23 | 119.42 (11) |
C11—C9—C7 | 132.45 (11) | C21—C22—H22 | 120.3 |
C11—C9—C10 | 122.12 (10) | C23—C22—H22 | 120.3 |
C7—C9—C10 | 105.11 (10) | C22—C23—C18 | 121.49 (10) |
O1—C10—N1 | 126.82 (11) | C22—C23—Cl1 | 119.26 (9) |
O1—C10—C9 | 128.70 (11) | C18—C23—Cl1 | 119.25 (9) |
N1—C10—C9 | 104.48 (9) | C10—N1—N2 | 112.22 (9) |
N3—C11—C9 | 117.88 (10) | C10—N1—C1 | 128.54 (10) |
N3—C11—C12 | 120.12 (10) | N2—N1—C1 | 119.16 (9) |
C9—C11—C12 | 121.87 (10) | C7—N2—N1 | 106.62 (9) |
C17—C12—C13 | 119.80 (11) | C11—N3—C18 | 129.41 (10) |
C17—C12—C11 | 119.38 (10) | C11—N3—H3A | 113.1 (12) |
C13—C12—C11 | 120.77 (10) | C18—N3—H3A | 117.4 (12) |
C14—C13—C12 | 119.87 (13) | ||
C6—C1—C2—C3 | 3.56 (19) | C13—C12—C17—C16 | −2.44 (17) |
N1—C1—C2—C3 | −175.90 (12) | C11—C12—C17—C16 | 174.82 (11) |
C1—C2—C3—C4 | 0.2 (2) | C23—C18—C19—C20 | −0.05 (17) |
C2—C3—C4—C5 | −3.0 (2) | N3—C18—C19—C20 | 175.29 (11) |
C3—C4—C5—C6 | 2.1 (2) | C18—C19—C20—C21 | −0.23 (18) |
C4—C5—C6—C1 | 1.6 (2) | C19—C20—C21—C22 | 0.31 (18) |
C2—C1—C6—C5 | −4.49 (19) | C20—C21—C22—C23 | −0.10 (17) |
N1—C1—C6—C5 | 174.98 (12) | C21—C22—C23—C18 | −0.18 (17) |
N2—C7—C9—C11 | 174.02 (13) | C21—C22—C23—Cl1 | −179.40 (9) |
C8—C7—C9—C11 | −4.3 (2) | C19—C18—C23—C22 | 0.26 (17) |
N2—C7—C9—C10 | 0.57 (14) | N3—C18—C23—C22 | −175.30 (10) |
C8—C7—C9—C10 | −177.72 (13) | C19—C18—C23—Cl1 | 179.47 (8) |
C11—C9—C10—O1 | 5.5 (2) | N3—C18—C23—Cl1 | 3.92 (14) |
C7—C9—C10—O1 | 179.79 (13) | O1—C10—N1—N2 | 179.70 (12) |
C11—C9—C10—N1 | −174.35 (11) | C9—C10—N1—N2 | −0.45 (13) |
C7—C9—C10—N1 | −0.05 (13) | O1—C10—N1—C1 | 3.2 (2) |
C7—C9—C11—N3 | −170.78 (12) | C9—C10—N1—C1 | −176.98 (11) |
C10—C9—C11—N3 | 1.74 (17) | C2—C1—N1—C10 | 161.96 (12) |
C7—C9—C11—C12 | 5.1 (2) | C6—C1—N1—C10 | −17.50 (19) |
C10—C9—C11—C12 | 177.64 (11) | C2—C1—N1—N2 | −14.36 (17) |
N3—C11—C12—C17 | 63.52 (15) | C6—C1—N1—N2 | 166.17 (11) |
C9—C11—C12—C17 | −112.29 (13) | C9—C7—N2—N1 | −0.83 (14) |
N3—C11—C12—C13 | −119.24 (13) | C8—C7—N2—N1 | 177.68 (11) |
C9—C11—C12—C13 | 64.95 (15) | C10—N1—N2—C7 | 0.81 (14) |
C17—C12—C13—C14 | 0.82 (18) | C1—N1—N2—C7 | 177.71 (11) |
C11—C12—C13—C14 | −176.41 (11) | C9—C11—N3—C18 | −175.06 (11) |
C12—C13—C14—C15 | 1.23 (19) | C12—C11—N3—C18 | 8.97 (18) |
C13—C14—C15—C16 | −1.7 (2) | C19—C18—N3—C11 | 37.69 (18) |
C14—C15—C16—C17 | 0.0 (2) | C23—C18—N3—C11 | −146.98 (12) |
C15—C16—C17—C12 | 2.03 (18) |
D—H···A | D—H | H···A | D···A | D—H···A |
N3—H3A···O1 | 0.879 (18) | 1.915 (18) | 2.6800 (14) | 144.5 (16) |
C6—H6···O1 | 0.93 | 2.31 | 2.9027 (16) | 121 |
C16—H16···O1i | 0.93 | 2.56 | 3.4797 (17) | 170 |
Symmetry code: (i) −x+3/2, y+1/2, −z+1/2. |
Experimental details
Crystal data | |
Chemical formula | C23H18ClN3O |
Mr | 387.85 |
Crystal system, space group | Monoclinic, P21/n |
Temperature (K) | 296 |
a, b, c (Å) | 9.0425 (3), 18.5180 (7), 11.1983 (4) |
β (°) | 90.423 (1) |
V (Å3) | 1875.09 (12) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.22 |
Crystal size (mm) | 0.22 × 0.20 × 0.18 |
Data collection | |
Diffractometer | Bruker SMART CCD diffractometer |
Absorption correction | Multi-scan (SADABS; Sheldrick, 1996) |
Tmin, Tmax | 0.951, 0.959 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 17018, 4637, 4251 |
Rint | 0.013 |
(sin θ/λ)max (Å−1) | 0.666 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.034, 0.095, 1.04 |
No. of reflections | 4613 |
No. of parameters | 258 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.37, −0.34 |
Computer programs: SMART (Bruker, 1998), SAINT (Bruker, 1998), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008).
D—H···A | D—H | H···A | D···A | D—H···A |
N3—H3A···O1 | 0.879 (18) | 1.915 (18) | 2.6800 (14) | 144.5 (16) |
C6—H6···O1 | 0.93 | 2.31 | 2.9027 (16) | 121 |
C16—H16···O1i | 0.93 | 2.56 | 3.4797 (17) | 170 |
Symmetry code: (i) −x+3/2, y+1/2, −z+1/2. |
Acknowledgements
This work was supported by the Scientific Research Foundation of the Education Department of Heilongjiang Province (grant No. 12513059), the Youth Foundation of Harbin University (grant No. HXKQ200610) and the Fundamental Research Funds for the Central Universities (grant No. DL11BB28).
References
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This is an open-access article distributed under the terms of the Creative Commons Attribution (CC-BY) Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.
The 1-phenyl-3-methyl-4-benzoyl-1H-pyrazol-5(4H)-ones (PMBP) are a novel type of β-enaminoketone. The Schiff bases derived from PMBP have attracted much attention due to their applications in pharmaceutical and agrochemical fields (e.g. Casas et al., 2007; Zhang et al., 2008). In order to expand this field, we now report the synthesis and structure of the title compound.
The molecular structure of the title compound is shown in Fig.1. Atoms O1, C10, C9 and C11 of the PMBP moiety and atom N3 of the o-chloroaniline group are coplanar, the largest deviation being 0.038 (11) Å for atom C10. The dihedral angle between this mean plane and the pyrazole ring of PMBP is 5.76 (3)°. The C9—C11 bond length of 1.3887 (15) Å, between usual C—C and C=C bond, indicates the delocalization of the electrons because of the addition of a proton to N3 is more favorable than to O2. The atom O2 of the PMBP moiety and the N3 atom of the o-chloroaniline group are on the same side of the C9—C11 bond, which are available for coordination with metal cations. A strong intramolecular hydrogen bond N3—H3A···O1 (Table 1) is also indicative of the enamine-keto form. In the crystal structure, the intramolecular hydrogen bond C6—H6···O1 and intermolecular hydrogen bond C16—H16···O1 are observed, the latter links the molecules into supramolecular chains along the b axis. All bond lengths and angles are normal and comparable with those found in related compounds (Zhang et al., 2007; Li et al., 2009; Chi et al., 2010).