organic compounds
5-(4-Chlorophenyl)-1-(2,4-dichlorophenyl)-4-methyl-N-(3-pyridylmethyl)-1H-pyrazole-3-carboxamide
aBeijing Institute of Pharmacology and Toxicology, Beijing 100850, People's Republic of China
*Correspondence e-mail: hexinhua01@126.com
In the title compound, C23H17Cl3N4O, the benzene rings are oriented with respect to the pyrazole ring at dihedral angles of 39.9 (2) and 72.90 (13)° for the chlorophenyl and dichlorophenyl rings, respectively. Intermolecular C—H⋯N and C—H⋯Cl interactions are observed in the crystal packing.
Related literature
For general background to pyrazole derivatives and their biological activity, see: Srivastava et al. (2008); LoVerme et al. (2009); Rinaldi-Carmona et al. (1994). For the synthesis, see: Li et al. (2007).
Experimental
Crystal data
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Refinement
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Data collection: CrystalClear (Rigaku/MSC, 2005); cell CrystalClear; data reduction: CrystalClear; 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: CrystalStructure (Rigaku/MSC, 2004) and publCIF (Westrip, 2009).
Supporting information
10.1107/S1600536809013609/ez2158sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536809013609/ez2158Isup2.hkl
The title compound was synthesized according to the procedure of Li et al.(2007). Colorless single crystals were obtained by slow evaporation of a solution in ehtyl acetate.
The H atoms linked to the C atoms were fixed geometrically and treated as riding with C—H = 0.95 Å (aromatic), 0.98Å (methyl), 0.99 Å (methylene) with Uiso(H) =1.2–1.5Ueq(C). H atoms of the amino group were located in a difference Fourier map and refined freely.
Data collection: CrystalClear (Rigaku/MSC, 2005); cell
CrystalClear (Rigaku/MSC, 2005); data reduction: CrystalClear (Rigaku/MSC, 2005); 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: CrystalStructure (Rigaku/MSC, 2004) and publCIF (Westrip, 2009).C23H17Cl3N4O | F(000) = 968 |
Mr = 471.76 | Dx = 1.511 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71070 Å |
a = 9.0032 (4) Å | Cell parameters from 4274 reflections |
b = 20.1001 (8) Å | θ = 1.8–27.9° |
c = 11.4664 (5) Å | µ = 0.47 mm−1 |
β = 92.003 (2)° | T = 113 K |
V = 2073.75 (15) Å3 | Block, colorless |
Z = 4 | 0.26 × 0.20 × 0.18 mm |
Rigaku Saturn CCD area-detector diffractometer | 4914 independent reflections |
Radiation source: rotating anode | 4152 reflections with I > 2σ(I) |
Confocal monochromator | Rint = 0.034 |
Detector resolution: 7.31 pixels mm-1 | θmax = 27.9°, θmin = 2.0° |
ω and ϕ scans | h = −11→11 |
Absorption correction: multi-scan (CrystalClear; Rigaku/MSC, 2005) | k = −26→26 |
Tmin = 0.888, Tmax = 0.921 | l = −15→15 |
19184 measured reflections |
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)] = 0.032 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.085 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.06 | w = 1/[σ2(Fo2) + (0.0441P)2 + 0.5347P] where P = (Fo2 + 2Fc2)/3 |
4914 reflections | (Δ/σ)max = 0.002 |
285 parameters | Δρmax = 0.75 e Å−3 |
0 restraints | Δρmin = −0.38 e Å−3 |
C23H17Cl3N4O | V = 2073.75 (15) Å3 |
Mr = 471.76 | Z = 4 |
Monoclinic, P21/c | Mo Kα radiation |
a = 9.0032 (4) Å | µ = 0.47 mm−1 |
b = 20.1001 (8) Å | T = 113 K |
c = 11.4664 (5) Å | 0.26 × 0.20 × 0.18 mm |
β = 92.003 (2)° |
Rigaku Saturn CCD area-detector diffractometer | 4914 independent reflections |
Absorption correction: multi-scan (CrystalClear; Rigaku/MSC, 2005) | 4152 reflections with I > 2σ(I) |
Tmin = 0.888, Tmax = 0.921 | Rint = 0.034 |
19184 measured reflections |
R[F2 > 2σ(F2)] = 0.032 | 0 restraints |
wR(F2) = 0.085 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.06 | Δρmax = 0.75 e Å−3 |
4914 reflections | Δρmin = −0.38 e Å−3 |
285 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 | ||
Cl1 | 0.01811 (4) | 0.643967 (18) | 0.56112 (3) | 0.02233 (10) | |
Cl2 | 0.52709 (4) | 0.554267 (18) | 0.22278 (3) | 0.02014 (10) | |
Cl3 | 0.15192 (4) | 0.596113 (19) | −0.14473 (3) | 0.02088 (10) | |
O1 | 0.60926 (12) | 0.24050 (6) | 0.40372 (10) | 0.0235 (3) | |
N1 | 0.65174 (14) | 0.25624 (6) | 0.21143 (12) | 0.0177 (3) | |
H1 | 0.633 (2) | 0.2770 (10) | 0.1553 (17) | 0.023 (5)* | |
N2 | 0.47501 (14) | 0.36428 (6) | 0.20324 (11) | 0.0158 (3) | |
N3 | 0.38825 (14) | 0.41730 (6) | 0.22738 (11) | 0.0149 (3) | |
N4 | 1.09010 (16) | 0.18709 (7) | 0.40063 (13) | 0.0255 (3) | |
C1 | 0.59001 (16) | 0.27258 (7) | 0.31272 (14) | 0.0160 (3) | |
C2 | 0.49452 (15) | 0.33347 (7) | 0.30626 (13) | 0.0145 (3) | |
C3 | 0.41906 (16) | 0.36537 (7) | 0.39652 (13) | 0.0142 (3) | |
C4 | 0.35219 (16) | 0.42006 (7) | 0.34305 (13) | 0.0138 (3) | |
C5 | 0.40835 (18) | 0.34400 (8) | 0.52139 (13) | 0.0203 (3) | |
H5A | 0.4938 | 0.3614 | 0.5672 | 0.030* | |
H5B | 0.4080 | 0.2953 | 0.5256 | 0.030* | |
H5C | 0.3163 | 0.3614 | 0.5529 | 0.030* | |
C6 | 0.26488 (16) | 0.47476 (7) | 0.39330 (12) | 0.0135 (3) | |
C7 | 0.30933 (16) | 0.49932 (8) | 0.50303 (13) | 0.0159 (3) | |
H7 | 0.3927 | 0.4800 | 0.5432 | 0.019* | |
C8 | 0.23420 (17) | 0.55137 (7) | 0.55469 (13) | 0.0169 (3) | |
H8 | 0.2662 | 0.5679 | 0.6290 | 0.020* | |
C9 | 0.11196 (16) | 0.57867 (7) | 0.49587 (13) | 0.0155 (3) | |
C10 | 0.06310 (16) | 0.55496 (7) | 0.38774 (13) | 0.0155 (3) | |
H10 | −0.0215 | 0.5740 | 0.3488 | 0.019* | |
C11 | 0.13936 (16) | 0.50292 (7) | 0.33683 (13) | 0.0144 (3) | |
H11 | 0.1060 | 0.4863 | 0.2629 | 0.017* | |
C12 | 0.33945 (16) | 0.45989 (7) | 0.13373 (12) | 0.0143 (3) | |
C13 | 0.39214 (16) | 0.52489 (7) | 0.12519 (13) | 0.0144 (3) | |
C14 | 0.33693 (16) | 0.56739 (7) | 0.03826 (13) | 0.0154 (3) | |
H14 | 0.3721 | 0.6118 | 0.0325 | 0.019* | |
C15 | 0.22900 (16) | 0.54305 (7) | −0.03979 (12) | 0.0155 (3) | |
C16 | 0.17985 (17) | 0.47747 (7) | −0.03588 (13) | 0.0181 (3) | |
H16 | 0.1090 | 0.4613 | −0.0923 | 0.022* | |
C17 | 0.23618 (17) | 0.43610 (8) | 0.05187 (13) | 0.0172 (3) | |
H17 | 0.2037 | 0.3912 | 0.0557 | 0.021* | |
C18 | 0.74791 (16) | 0.19856 (7) | 0.19942 (14) | 0.0185 (3) | |
H18A | 0.7511 | 0.1867 | 0.1158 | 0.022* | |
H18B | 0.7040 | 0.1605 | 0.2408 | 0.022* | |
C19 | 0.95085 (18) | 0.18300 (8) | 0.35444 (15) | 0.0213 (3) | |
H19 | 0.8786 | 0.1607 | 0.3985 | 0.026* | |
C20 | 0.90543 (16) | 0.20918 (7) | 0.24668 (13) | 0.0158 (3) | |
C21 | 1.01070 (18) | 0.24347 (8) | 0.18393 (14) | 0.0200 (3) | |
H21 | 0.9844 | 0.2630 | 0.1106 | 0.024* | |
C22 | 1.15446 (18) | 0.24873 (8) | 0.23013 (15) | 0.0237 (3) | |
H22 | 1.2281 | 0.2721 | 0.1892 | 0.028* | |
C23 | 1.18931 (18) | 0.21935 (8) | 0.33690 (16) | 0.0254 (4) | |
H23 | 1.2889 | 0.2222 | 0.3666 | 0.031* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Cl1 | 0.0286 (2) | 0.01416 (17) | 0.0247 (2) | 0.00408 (14) | 0.00882 (16) | −0.00229 (14) |
Cl2 | 0.01844 (19) | 0.02230 (19) | 0.01936 (19) | −0.00254 (14) | −0.00415 (14) | −0.00143 (14) |
Cl3 | 0.0230 (2) | 0.02238 (19) | 0.01701 (19) | 0.00224 (15) | −0.00231 (14) | 0.00519 (14) |
O1 | 0.0245 (6) | 0.0209 (6) | 0.0252 (6) | 0.0074 (5) | 0.0007 (5) | 0.0043 (5) |
N1 | 0.0171 (6) | 0.0151 (6) | 0.0208 (7) | 0.0055 (5) | −0.0006 (5) | 0.0016 (5) |
N2 | 0.0145 (6) | 0.0130 (6) | 0.0199 (7) | 0.0034 (5) | 0.0021 (5) | −0.0005 (5) |
N3 | 0.0163 (6) | 0.0135 (6) | 0.0151 (6) | 0.0048 (5) | 0.0021 (5) | 0.0009 (5) |
N4 | 0.0232 (7) | 0.0239 (7) | 0.0290 (8) | 0.0020 (6) | −0.0049 (6) | 0.0042 (6) |
C1 | 0.0110 (7) | 0.0131 (7) | 0.0239 (8) | −0.0007 (5) | −0.0010 (6) | −0.0006 (6) |
C2 | 0.0108 (7) | 0.0132 (6) | 0.0194 (7) | −0.0009 (5) | −0.0002 (5) | 0.0004 (6) |
C3 | 0.0113 (7) | 0.0139 (7) | 0.0172 (7) | −0.0002 (5) | −0.0016 (5) | 0.0003 (5) |
C4 | 0.0127 (7) | 0.0150 (7) | 0.0136 (7) | −0.0003 (5) | 0.0001 (5) | −0.0006 (5) |
C5 | 0.0229 (8) | 0.0208 (8) | 0.0170 (8) | 0.0047 (6) | −0.0015 (6) | 0.0028 (6) |
C6 | 0.0126 (7) | 0.0136 (7) | 0.0144 (7) | −0.0001 (5) | 0.0024 (5) | 0.0010 (5) |
C7 | 0.0124 (7) | 0.0202 (7) | 0.0151 (7) | −0.0006 (6) | 0.0000 (5) | 0.0007 (6) |
C8 | 0.0166 (7) | 0.0186 (7) | 0.0154 (7) | −0.0036 (6) | 0.0016 (6) | −0.0025 (6) |
C9 | 0.0165 (7) | 0.0103 (6) | 0.0201 (8) | −0.0010 (5) | 0.0075 (6) | −0.0006 (5) |
C10 | 0.0137 (7) | 0.0139 (7) | 0.0190 (7) | 0.0010 (5) | 0.0020 (6) | 0.0033 (6) |
C11 | 0.0148 (7) | 0.0146 (7) | 0.0139 (7) | −0.0006 (5) | 0.0004 (5) | 0.0004 (5) |
C12 | 0.0156 (7) | 0.0149 (7) | 0.0128 (7) | 0.0050 (5) | 0.0037 (6) | 0.0011 (5) |
C13 | 0.0123 (7) | 0.0173 (7) | 0.0138 (7) | 0.0017 (5) | 0.0017 (5) | −0.0028 (5) |
C14 | 0.0170 (7) | 0.0142 (7) | 0.0153 (7) | 0.0006 (5) | 0.0034 (6) | 0.0002 (6) |
C15 | 0.0168 (7) | 0.0171 (7) | 0.0127 (7) | 0.0039 (6) | 0.0024 (6) | 0.0017 (6) |
C16 | 0.0188 (7) | 0.0198 (7) | 0.0157 (7) | −0.0001 (6) | −0.0011 (6) | −0.0019 (6) |
C17 | 0.0188 (7) | 0.0142 (7) | 0.0188 (8) | 0.0004 (6) | 0.0023 (6) | −0.0020 (6) |
C18 | 0.0152 (7) | 0.0142 (7) | 0.0262 (8) | 0.0031 (6) | −0.0004 (6) | −0.0041 (6) |
C19 | 0.0194 (8) | 0.0181 (7) | 0.0265 (8) | −0.0005 (6) | 0.0015 (6) | 0.0041 (6) |
C20 | 0.0154 (7) | 0.0110 (6) | 0.0212 (8) | 0.0033 (5) | 0.0012 (6) | −0.0037 (6) |
C21 | 0.0238 (8) | 0.0174 (7) | 0.0190 (8) | 0.0003 (6) | 0.0029 (6) | −0.0015 (6) |
C22 | 0.0198 (8) | 0.0235 (8) | 0.0284 (9) | −0.0049 (6) | 0.0073 (7) | −0.0030 (7) |
C23 | 0.0168 (8) | 0.0247 (8) | 0.0344 (10) | 0.0002 (6) | −0.0033 (7) | −0.0044 (7) |
Cl1—C9 | 1.7437 (15) | C8—H8 | 0.9500 |
Cl2—C13 | 1.7268 (15) | C9—C10 | 1.386 (2) |
Cl3—C15 | 1.7346 (15) | C10—C11 | 1.391 (2) |
O1—C1 | 1.2336 (19) | C10—H10 | 0.9500 |
N1—C1 | 1.346 (2) | C11—H11 | 0.9500 |
N1—C18 | 1.4565 (18) | C12—C17 | 1.383 (2) |
N1—H1 | 0.78 (2) | C12—C13 | 1.395 (2) |
N2—C2 | 1.3399 (19) | C13—C14 | 1.391 (2) |
N2—N3 | 1.3556 (16) | C14—C15 | 1.387 (2) |
N3—C4 | 1.3776 (19) | C14—H14 | 0.9500 |
N3—C12 | 1.4303 (18) | C15—C16 | 1.392 (2) |
N4—C23 | 1.341 (2) | C16—C17 | 1.388 (2) |
N4—C19 | 1.346 (2) | C16—H16 | 0.9500 |
C1—C2 | 1.496 (2) | C17—H17 | 0.9500 |
C2—C3 | 1.412 (2) | C18—C20 | 1.515 (2) |
C3—C4 | 1.386 (2) | C18—H18A | 0.9900 |
C3—C5 | 1.501 (2) | C18—H18B | 0.9900 |
C4—C6 | 1.480 (2) | C19—C20 | 1.391 (2) |
C5—H5A | 0.9800 | C19—H19 | 0.9500 |
C5—H5B | 0.9800 | C20—C21 | 1.392 (2) |
C5—H5C | 0.9800 | C21—C22 | 1.385 (2) |
C6—C7 | 1.397 (2) | C21—H21 | 0.9500 |
C6—C11 | 1.4019 (19) | C22—C23 | 1.385 (2) |
C7—C8 | 1.390 (2) | C22—H22 | 0.9500 |
C7—H7 | 0.9500 | C23—H23 | 0.9500 |
C8—C9 | 1.384 (2) | ||
C1—N1—C18 | 122.73 (14) | C10—C11—H11 | 119.6 |
C1—N1—H1 | 119.9 (14) | C6—C11—H11 | 119.6 |
C18—N1—H1 | 117.3 (14) | C17—C12—C13 | 119.89 (13) |
C2—N2—N3 | 104.00 (12) | C17—C12—N3 | 118.96 (13) |
N2—N3—C4 | 112.65 (12) | C13—C12—N3 | 121.14 (13) |
N2—N3—C12 | 118.77 (12) | C14—C13—C12 | 120.77 (13) |
C4—N3—C12 | 128.47 (12) | C14—C13—Cl2 | 118.68 (11) |
C23—N4—C19 | 116.36 (15) | C12—C13—Cl2 | 120.55 (11) |
O1—C1—N1 | 123.54 (14) | C15—C14—C13 | 118.06 (13) |
O1—C1—C2 | 122.20 (14) | C15—C14—H14 | 121.0 |
N1—C1—C2 | 114.26 (13) | C13—C14—H14 | 121.0 |
N2—C2—C3 | 112.63 (13) | C14—C15—C16 | 121.99 (13) |
N2—C2—C1 | 118.63 (13) | C14—C15—Cl3 | 119.01 (11) |
C3—C2—C1 | 128.74 (13) | C16—C15—Cl3 | 119.00 (12) |
C4—C3—C2 | 104.40 (13) | C17—C16—C15 | 118.84 (14) |
C4—C3—C5 | 127.40 (13) | C17—C16—H16 | 120.6 |
C2—C3—C5 | 128.16 (13) | C15—C16—H16 | 120.6 |
N3—C4—C3 | 106.29 (13) | C12—C17—C16 | 120.33 (14) |
N3—C4—C6 | 123.44 (13) | C12—C17—H17 | 119.8 |
C3—C4—C6 | 130.20 (13) | C16—C17—H17 | 119.8 |
C3—C5—H5A | 109.5 | N1—C18—C20 | 113.96 (12) |
C3—C5—H5B | 109.5 | N1—C18—H18A | 108.8 |
H5A—C5—H5B | 109.5 | C20—C18—H18A | 108.8 |
C3—C5—H5C | 109.5 | N1—C18—H18B | 108.8 |
H5A—C5—H5C | 109.5 | C20—C18—H18B | 108.8 |
H5B—C5—H5C | 109.5 | H18A—C18—H18B | 107.7 |
C7—C6—C11 | 118.31 (13) | N4—C19—C20 | 124.54 (15) |
C7—C6—C4 | 118.28 (13) | N4—C19—H19 | 117.7 |
C11—C6—C4 | 123.41 (13) | C20—C19—H19 | 117.7 |
C8—C7—C6 | 121.43 (14) | C19—C20—C21 | 117.51 (14) |
C8—C7—H7 | 119.3 | C19—C20—C18 | 120.44 (14) |
C6—C7—H7 | 119.3 | C21—C20—C18 | 122.03 (14) |
C9—C8—C7 | 118.78 (14) | C22—C21—C20 | 118.94 (15) |
C9—C8—H8 | 120.6 | C22—C21—H21 | 120.5 |
C7—C8—H8 | 120.6 | C20—C21—H21 | 120.5 |
C8—C9—C10 | 121.46 (13) | C21—C22—C23 | 119.02 (15) |
C8—C9—Cl1 | 118.58 (12) | C21—C22—H22 | 120.5 |
C10—C9—Cl1 | 119.96 (11) | C23—C22—H22 | 120.5 |
C9—C10—C11 | 119.23 (13) | N4—C23—C22 | 123.58 (15) |
C9—C10—H10 | 120.4 | N4—C23—H23 | 118.2 |
C11—C10—H10 | 120.4 | C22—C23—H23 | 118.2 |
C10—C11—C6 | 120.77 (13) | ||
C2—N2—N3—C4 | −0.44 (16) | Cl1—C9—C10—C11 | 179.90 (11) |
C2—N2—N3—C12 | −177.01 (12) | C9—C10—C11—C6 | −0.4 (2) |
C18—N1—C1—O1 | 0.1 (2) | C7—C6—C11—C10 | 1.4 (2) |
C18—N1—C1—C2 | −179.79 (13) | C4—C6—C11—C10 | −179.03 (14) |
N3—N2—C2—C3 | 1.05 (16) | N2—N3—C12—C17 | 69.79 (18) |
N3—N2—C2—C1 | −178.45 (12) | C4—N3—C12—C17 | −106.16 (17) |
O1—C1—C2—N2 | −177.73 (14) | N2—N3—C12—C13 | −111.38 (15) |
N1—C1—C2—N2 | 2.13 (19) | C4—N3—C12—C13 | 72.7 (2) |
O1—C1—C2—C3 | 2.9 (2) | C17—C12—C13—C14 | 3.0 (2) |
N1—C1—C2—C3 | −177.28 (14) | N3—C12—C13—C14 | −175.77 (13) |
N2—C2—C3—C4 | −1.25 (16) | C17—C12—C13—Cl2 | −177.12 (11) |
C1—C2—C3—C4 | 178.18 (14) | N3—C12—C13—Cl2 | 4.06 (19) |
N2—C2—C3—C5 | 176.76 (14) | C12—C13—C14—C15 | −0.4 (2) |
C1—C2—C3—C5 | −3.8 (2) | Cl2—C13—C14—C15 | 179.75 (11) |
N2—N3—C4—C3 | −0.31 (16) | C13—C14—C15—C16 | −2.5 (2) |
C12—N3—C4—C3 | 175.84 (14) | C13—C14—C15—Cl3 | 176.98 (11) |
N2—N3—C4—C6 | 176.89 (13) | C14—C15—C16—C17 | 2.8 (2) |
C12—N3—C4—C6 | −7.0 (2) | Cl3—C15—C16—C17 | −176.73 (11) |
C2—C3—C4—N3 | 0.89 (15) | C13—C12—C17—C16 | −2.8 (2) |
C5—C3—C4—N3 | −177.14 (14) | N3—C12—C17—C16 | 176.05 (13) |
C2—C3—C4—C6 | −176.05 (14) | C15—C16—C17—C12 | −0.1 (2) |
C5—C3—C4—C6 | 5.9 (3) | C1—N1—C18—C20 | −78.52 (18) |
N3—C4—C6—C7 | −138.52 (15) | C23—N4—C19—C20 | 0.6 (2) |
C3—C4—C6—C7 | 38.0 (2) | N4—C19—C20—C21 | −1.8 (2) |
N3—C4—C6—C11 | 41.9 (2) | N4—C19—C20—C18 | 176.56 (15) |
C3—C4—C6—C11 | −141.62 (16) | N1—C18—C20—C19 | 102.36 (17) |
C11—C6—C7—C8 | −1.5 (2) | N1—C18—C20—C21 | −79.37 (18) |
C4—C6—C7—C8 | 178.89 (13) | C19—C20—C21—C22 | 1.2 (2) |
C6—C7—C8—C9 | 0.6 (2) | C18—C20—C21—C22 | −177.11 (14) |
C7—C8—C9—C10 | 0.4 (2) | C20—C21—C22—C23 | 0.4 (2) |
C7—C8—C9—Cl1 | 180.00 (11) | C19—N4—C23—C22 | 1.3 (3) |
C8—C9—C10—C11 | −0.5 (2) | C21—C22—C23—N4 | −1.8 (3) |
D—H···A | D—H | H···A | D···A | D—H···A |
C17—H17···N4i | 0.95 | 2.56 | 3.272 (2) | 132 |
C7—H7···Cl2ii | 0.95 | 2.84 | 3.5903 (15) | 137 |
Symmetry codes: (i) x−1, −y+1/2, z−1/2; (ii) −x+1, −y+1, −z+1. |
Experimental details
Crystal data | |
Chemical formula | C23H17Cl3N4O |
Mr | 471.76 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 113 |
a, b, c (Å) | 9.0032 (4), 20.1001 (8), 11.4664 (5) |
β (°) | 92.003 (2) |
V (Å3) | 2073.75 (15) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.47 |
Crystal size (mm) | 0.26 × 0.20 × 0.18 |
Data collection | |
Diffractometer | Rigaku Saturn CCD area-detector diffractometer |
Absorption correction | Multi-scan (CrystalClear; Rigaku/MSC, 2005) |
Tmin, Tmax | 0.888, 0.921 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 19184, 4914, 4152 |
Rint | 0.034 |
(sin θ/λ)max (Å−1) | 0.658 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.032, 0.085, 1.06 |
No. of reflections | 4914 |
No. of parameters | 285 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.75, −0.38 |
Computer programs: CrystalClear (Rigaku/MSC, 2005), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008), CrystalStructure (Rigaku/MSC, 2004) and publCIF (Westrip, 2009).
D—H···A | D—H | H···A | D···A | D—H···A |
C17—H17···N4i | 0.95 | 2.56 | 3.272 (2) | 131.9 |
C7—H7···Cl2ii | 0.95 | 2.839 | 3.5903 (15) | 136.7 |
Symmetry codes: (i) x−1, −y+1/2, z−1/2; (ii) −x+1, −y+1, −z+1. |
Acknowledgements
We thank T. L. Liang for her fruitful help.
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.
Pyrazole derivatives have been found to be a novel class of cannabinoid CB1 receptor antagonists (Srivastava et al., 2008; LoVerme et al., 2009; Rinaldi-Carmona M. et al., 1994). The crystal structure of the title compound (IC50 =0.139nM at CB1) was analyzed by X-ray diffraction, for the purpose of studying its quantitative structure-activity relationship (QSAR).
In the molecule of the title compound (Fig. 1) the bond lengths and angles are generally within normal ranges. The benzene rings (C6—C11) and (C12—C17) are oriented at dihedral angles of 39.9 (2)° and 72.90 (13)°, respectively, with respect to the pyrazole ring.
In the crystal structure, the molecules are linked by intermolecular C17—H17···N4 and C7—H7···Cl2 interactions (Fig. 2).