Literature DB >> 21578467

3-(4-Chloro-phen-yl)-1-[(E)-1-(4-chloro-phen-yl)-2-(4-methyl-phenyl-sulfan-yl)ethen-yl]-4-(4-methyl-phenyl-sulfan-yl)-1H-pyrazole.

P Ramesh, Ramaiyan Manikannan, S Muthusubramanian, S S Sundaresan, M N Ponnuswamy.   

Abstract

In the title compound, C(31)H(24)Cl(2)N(2)S(2), the pyrazole ring adopts planar conformation with a maximum deviation of 0.002 (2) Å. The chloro-phenyl rings are twisted out of the plane of the pyrazole ring by 75.1 (1) and 39.5 (1)°. The crystal packing is controlled by weak intermolecular C-H⋯π interactions.

Entities:  

Year:  2009        PMID: 21578467      PMCID: PMC2971206          DOI: 10.1107/S1600536809043293

Source DB:  PubMed          Journal:  Acta Crystallogr Sect E Struct Rep Online        ISSN: 1600-5368


Related literature

For the pharmacological and medicinal properties of pyrazole derivatives, see: Baraldi et al. (1998 ▶); Bruno et al. (1990 ▶); Cottineau et al. (2002 ▶); Londershausen (1996 ▶); Chen & Li (1998 ▶); Mishra et al. (1998 ▶); Smith et al. (2001 ▶). For sp 2 hybridization, see: Beddoes et al., 1986 ▶). For bond-length data, see: Jin et al. (2004 ▶).

Experimental

Crystal data

C31H24Cl2N2S2 M = 559.54 Monoclinic, a = 9.7515 (2) Å b = 10.2097 (3) Å c = 27.6705 (6) Å β = 96.402 (1)° V = 2737.69 (11) Å3 Z = 4 Mo Kα radiation μ = 0.41 mm−1 T = 293 K 0.30 × 0.25 × 0.20 mm

Data collection

Bruker Kappa APEXII diffractometer Absorption correction: multi-scan (SADABS; Sheldrick, 2001 ▶) T min = 0.883, T max = 0.921 38656 measured reflections 9852 independent reflections 5773 reflections with I > 2σ(I) R int = 0.032

Refinement

R[F 2 > 2σ(F 2)] = 0.052 wR(F 2) = 0.160 S = 1.03 9852 reflections 336 parameters H-atom parameters constrained Δρmax = 0.54 e Å−3 Δρmin = −0.33 e Å−3 Data collection: APEX2 (Bruker, 2004 ▶); cell refinement: SAINT (Bruker, 2004 ▶); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008 ▶); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008 ▶); molecular graphics: ORTEP-3 (Farrugia, (1997 ▶)); software used to prepare material for publication: SHELXL97 and PLATON (Spek, 2009 ▶). Crystal structure: contains datablocks global, I. DOI: 10.1107/S1600536809043293/bt5084sup1.cif Structure factors: contains datablocks I. DOI: 10.1107/S1600536809043293/bt5084Isup2.hkl Additional supplementary materials: crystallographic information; 3D view; checkCIF report
C31H24Cl2N2S2F(000) = 1160
Mr = 559.54Dx = 1.358 Mg m3
Monoclinic, P21/nMo Kα radiation, λ = 0.71073 Å
Hall symbol: -P 2ynCell parameters from 2546 reflections
a = 9.7515 (2) Åθ = 1.5–32.5°
b = 10.2097 (3) ŵ = 0.41 mm1
c = 27.6705 (6) ÅT = 293 K
β = 96.402 (1)°Block, colourless
V = 2737.69 (11) Å30.30 × 0.25 × 0.20 mm
Z = 4
Bruker Kappa APEXII diffractometer9852 independent reflections
Radiation source: fine-focus sealed tube5773 reflections with I > 2σ(I)
graphiteRint = 0.032
ω and φ scansθmax = 32.5°, θmin = 1.5°
Absorption correction: multi-scan (SADABS; Sheldrick, 2001)h = −14→14
Tmin = 0.883, Tmax = 0.921k = −15→15
38656 measured reflectionsl = −41→39
Refinement on F2Primary atom site location: structure-invariant direct methods
Least-squares matrix: fullSecondary atom site location: difference Fourier map
R[F2 > 2σ(F2)] = 0.052Hydrogen site location: inferred from neighbouring sites
wR(F2) = 0.160H-atom parameters constrained
S = 1.03w = 1/[σ2(Fo2) + (0.0723P)2 + 0.5516P] where P = (Fo2 + 2Fc2)/3
9852 reflections(Δ/σ)max = 0.003
336 parametersΔρmax = 0.54 e Å3
0 restraintsΔρmin = −0.33 e Å3
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.
xyzUiso*/Ueq
S10.08583 (6)−0.11974 (5)0.63584 (2)0.05549 (15)
S20.25311 (5)0.35982 (5)0.42760 (2)0.05549 (15)
Cl1−0.13889 (7)0.45353 (6)0.68961 (2)0.07471 (19)
Cl20.48797 (8)−0.21313 (9)0.30187 (2)0.0905 (2)
N10.23543 (16)0.02119 (14)0.49711 (5)0.0415 (3)
N20.18350 (16)0.10815 (14)0.52737 (5)0.0421 (3)
C30.1835 (2)0.23137 (18)0.50948 (7)0.0472 (4)
H30.15310.30620.52420.057*
C40.23608 (19)0.22595 (18)0.46595 (7)0.0446 (4)
C50.26756 (18)0.09181 (17)0.45965 (6)0.0398 (4)
C60.13934 (19)0.06576 (17)0.57196 (6)0.0410 (4)
C70.1621 (2)−0.05738 (19)0.58678 (7)0.0485 (4)
H70.2196−0.11070.57070.058*
C80.2206 (2)−0.21076 (18)0.66790 (6)0.0461 (4)
C90.3584 (2)−0.1814 (2)0.66695 (8)0.0583 (5)
H90.3845−0.11160.64840.070*
C100.4568 (3)−0.2562 (2)0.69371 (8)0.0653 (6)
H100.5496−0.23700.69240.078*
C110.4224 (3)−0.3585 (2)0.72236 (7)0.0606 (5)
C120.2849 (3)−0.3848 (2)0.72369 (8)0.0614 (6)
H120.2592−0.45240.74330.074*
C130.1842 (2)−0.3134 (2)0.69661 (7)0.0566 (5)
H130.0917−0.33400.69760.068*
C140.07032 (18)0.16654 (17)0.59941 (6)0.0389 (3)
C150.1380 (2)0.2157 (2)0.64224 (7)0.0495 (4)
H150.22710.18770.65270.059*
C160.0749 (2)0.3054 (2)0.66948 (7)0.0523 (5)
H160.12120.33880.69800.063*
C17−0.0571 (2)0.34490 (18)0.65410 (6)0.0459 (4)
C18−0.1264 (2)0.29888 (19)0.61145 (7)0.0478 (4)
H18−0.21550.32730.60120.057*
C19−0.06171 (19)0.20999 (18)0.58410 (6)0.0443 (4)
H19−0.10740.17890.55510.053*
C200.4342 (2)0.38614 (17)0.43419 (7)0.0441 (4)
C210.4884 (2)0.4601 (2)0.39927 (7)0.0521 (5)
H210.43010.49670.37400.063*
C220.6289 (2)0.4800 (2)0.40176 (8)0.0549 (5)
H220.66390.53050.37800.066*
C230.7187 (2)0.42680 (19)0.43848 (8)0.0524 (5)
C240.6620 (3)0.3574 (2)0.47388 (9)0.0679 (6)
H240.71990.32270.49970.081*
C250.5222 (2)0.3377 (2)0.47219 (8)0.0649 (6)
H250.48690.29140.49700.078*
C260.32826 (18)0.02448 (17)0.42028 (6)0.0400 (4)
C270.2903 (2)0.0553 (2)0.37175 (6)0.0510 (5)
H270.23100.12520.36360.061*
C280.3405 (2)−0.0176 (2)0.33562 (7)0.0576 (5)
H280.31470.00280.30310.069*
C290.4282 (2)−0.1200 (2)0.34765 (7)0.0553 (5)
C300.4714 (2)−0.1501 (2)0.39539 (8)0.0567 (5)
H300.5336−0.21780.40320.068*
C310.4201 (2)−0.07719 (19)0.43141 (7)0.0490 (4)
H310.4480−0.09690.46380.059*
C320.5335 (3)−0.4378 (3)0.75125 (10)0.0887 (9)
H32A0.5850−0.48540.72940.133*
H32B0.4918−0.49830.77180.133*
H32C0.5942−0.38020.77090.133*
C330.8720 (2)0.4392 (3)0.43899 (11)0.0728 (7)
H33A0.90790.36170.42530.109*
H33B0.91360.44970.47190.109*
H33C0.89290.51400.42010.109*
U11U22U33U12U13U23
S10.0571 (3)0.0534 (3)0.0597 (3)0.0077 (2)0.0230 (2)0.0147 (2)
S20.0492 (3)0.0490 (3)0.0690 (3)0.0058 (2)0.0096 (2)0.0254 (2)
Cl10.0911 (5)0.0722 (4)0.0659 (3)0.0193 (3)0.0308 (3)−0.0139 (3)
Cl20.0853 (5)0.1220 (6)0.0684 (4)−0.0011 (4)0.0276 (3)−0.0391 (4)
N10.0492 (8)0.0357 (7)0.0409 (7)0.0026 (6)0.0111 (6)0.0010 (6)
N20.0519 (9)0.0344 (7)0.0416 (7)0.0020 (6)0.0125 (6)0.0017 (6)
C30.0532 (11)0.0349 (9)0.0553 (10)0.0047 (8)0.0140 (8)0.0039 (7)
C40.0460 (10)0.0392 (9)0.0498 (9)0.0025 (8)0.0112 (8)0.0094 (7)
C50.0398 (9)0.0391 (9)0.0411 (8)0.0002 (7)0.0066 (7)0.0051 (7)
C60.0451 (9)0.0391 (9)0.0402 (8)0.0021 (7)0.0107 (7)0.0008 (7)
C70.0563 (11)0.0428 (10)0.0494 (9)0.0078 (8)0.0193 (8)0.0051 (8)
C80.0559 (11)0.0412 (9)0.0433 (9)−0.0014 (8)0.0143 (8)0.0009 (7)
C90.0607 (13)0.0519 (12)0.0640 (12)−0.0077 (10)0.0141 (10)0.0108 (9)
C100.0556 (13)0.0749 (15)0.0660 (13)−0.0008 (11)0.0096 (10)0.0038 (11)
C110.0736 (15)0.0634 (14)0.0451 (10)0.0151 (11)0.0085 (9)−0.0005 (9)
C120.0828 (16)0.0545 (12)0.0484 (10)0.0020 (11)0.0147 (10)0.0124 (9)
C130.0614 (13)0.0586 (12)0.0522 (11)−0.0069 (10)0.0174 (9)0.0101 (9)
C140.0424 (9)0.0360 (8)0.0393 (8)−0.0002 (7)0.0090 (7)0.0014 (6)
C150.0450 (10)0.0531 (11)0.0491 (10)0.0040 (8)−0.0004 (8)−0.0048 (8)
C160.0611 (12)0.0535 (11)0.0415 (9)−0.0004 (9)0.0014 (8)−0.0081 (8)
C170.0562 (11)0.0402 (9)0.0447 (9)0.0030 (8)0.0198 (8)−0.0002 (7)
C180.0411 (10)0.0457 (10)0.0574 (10)0.0025 (8)0.0090 (8)−0.0002 (8)
C190.0433 (10)0.0427 (9)0.0465 (9)−0.0016 (8)0.0029 (7)−0.0048 (7)
C200.0502 (10)0.0361 (9)0.0469 (9)0.0048 (7)0.0091 (8)0.0047 (7)
C210.0570 (12)0.0542 (11)0.0459 (9)0.0034 (9)0.0086 (8)0.0114 (8)
C220.0569 (12)0.0552 (12)0.0549 (11)−0.0034 (10)0.0162 (9)0.0050 (9)
C230.0513 (11)0.0397 (10)0.0659 (12)−0.0011 (8)0.0060 (9)−0.0104 (8)
C240.0593 (13)0.0685 (15)0.0720 (14)0.0010 (11)−0.0097 (11)0.0181 (12)
C250.0635 (14)0.0664 (14)0.0637 (13)−0.0024 (11)0.0024 (10)0.0300 (11)
C260.0375 (9)0.0437 (9)0.0396 (8)−0.0027 (7)0.0075 (6)0.0031 (7)
C270.0421 (10)0.0679 (13)0.0428 (9)0.0010 (9)0.0043 (7)0.0072 (8)
C280.0469 (11)0.0878 (16)0.0382 (9)−0.0089 (11)0.0059 (8)0.0003 (9)
C290.0462 (11)0.0725 (14)0.0498 (10)−0.0123 (10)0.0173 (8)−0.0154 (9)
C300.0568 (12)0.0572 (12)0.0578 (11)0.0074 (10)0.0141 (9)−0.0059 (9)
C310.0563 (11)0.0492 (10)0.0416 (9)0.0053 (9)0.0060 (8)0.0022 (7)
C320.100 (2)0.100 (2)0.0659 (15)0.0409 (18)0.0087 (14)0.0101 (14)
C330.0553 (13)0.0606 (14)0.1015 (19)−0.0034 (11)0.0041 (12)−0.0168 (13)
S1—C71.7398 (19)C16—H160.9300
S1—C81.766 (2)C17—C181.376 (3)
S2—C41.7496 (18)C18—C191.378 (3)
S2—C201.776 (2)C18—H180.9300
Cl1—C171.7340 (18)C19—H190.9300
Cl2—C291.736 (2)C20—C251.373 (3)
N1—C51.328 (2)C20—C211.377 (3)
N1—N21.3565 (19)C21—C221.379 (3)
N2—C31.352 (2)C21—H210.9300
N2—C61.419 (2)C22—C231.376 (3)
C3—C41.362 (3)C22—H220.9300
C3—H30.9300C23—C241.374 (3)
C4—C51.418 (3)C23—C331.500 (3)
C5—C261.467 (2)C24—C251.373 (3)
C6—C71.333 (3)C24—H240.9300
C6—C141.484 (2)C25—H250.9300
C7—H70.9300C26—C311.383 (3)
C8—C91.380 (3)C26—C271.389 (2)
C8—C131.385 (3)C27—C281.379 (3)
C9—C101.377 (3)C27—H270.9300
C9—H90.9300C28—C291.369 (3)
C10—C111.376 (3)C28—H280.9300
C10—H100.9300C29—C301.375 (3)
C11—C121.372 (4)C30—C311.381 (3)
C11—C321.508 (3)C30—H300.9300
C12—C131.376 (3)C31—H310.9300
C12—H120.9300C32—H32A0.9600
C13—H130.9300C32—H32B0.9600
C14—C191.383 (3)C32—H32C0.9600
C14—C151.385 (2)C33—H33A0.9600
C15—C161.374 (3)C33—H33B0.9600
C15—H150.9300C33—H33C0.9600
C16—C171.371 (3)
C7—S1—C8103.04 (9)C19—C18—H18120.5
C4—S2—C20102.51 (9)C18—C19—C14120.68 (17)
C5—N1—N2105.26 (13)C18—C19—H19119.7
C3—N2—N1111.58 (14)C14—C19—H19119.7
C3—N2—C6127.92 (15)C25—C20—C21118.63 (19)
N1—N2—C6120.49 (14)C25—C20—S2123.61 (16)
N2—C3—C4107.54 (16)C21—C20—S2117.76 (14)
N2—C3—H3126.2C20—C21—C22120.14 (18)
C4—C3—H3126.2C20—C21—H21119.9
C3—C4—C5104.82 (15)C22—C21—H21119.9
C3—C4—S2125.11 (15)C23—C22—C21121.67 (19)
C5—C4—S2130.04 (14)C23—C22—H22119.2
N1—C5—C4110.80 (15)C21—C22—H22119.2
N1—C5—C26118.34 (15)C24—C23—C22117.2 (2)
C4—C5—C26130.85 (15)C24—C23—C33121.1 (2)
C7—C6—N2119.92 (16)C22—C23—C33121.7 (2)
C7—C6—C14124.46 (16)C25—C24—C23121.9 (2)
N2—C6—C14115.62 (14)C25—C24—H24119.1
C6—C7—S1120.93 (15)C23—C24—H24119.1
C6—C7—H7119.5C20—C25—C24120.4 (2)
S1—C7—H7119.5C20—C25—H25119.8
C9—C8—C13119.17 (19)C24—C25—H25119.8
C9—C8—S1123.22 (15)C31—C26—C27118.79 (17)
C13—C8—S1117.56 (16)C31—C26—C5119.41 (15)
C10—C9—C8119.4 (2)C27—C26—C5121.71 (17)
C10—C9—H9120.3C28—C27—C26120.04 (19)
C8—C9—H9120.3C28—C27—H27120.0
C11—C10—C9122.1 (2)C26—C27—H27120.0
C11—C10—H10119.0C29—C28—C27119.92 (18)
C9—C10—H10119.0C29—C28—H28120.0
C12—C11—C10117.8 (2)C27—C28—H28120.0
C12—C11—C32121.8 (2)C28—C29—C30121.33 (19)
C10—C11—C32120.4 (2)C28—C29—Cl2119.50 (16)
C11—C12—C13121.5 (2)C30—C29—Cl2119.16 (18)
C11—C12—H12119.3C29—C30—C31118.5 (2)
C13—C12—H12119.3C29—C30—H30120.8
C12—C13—C8120.0 (2)C31—C30—H30120.8
C12—C13—H13120.0C30—C31—C26121.40 (18)
C8—C13—H13120.0C30—C31—H31119.3
C19—C14—C15118.97 (16)C26—C31—H31119.3
C19—C14—C6121.71 (15)C11—C32—H32A109.5
C15—C14—C6119.30 (16)C11—C32—H32B109.5
C16—C15—C14120.76 (18)H32A—C32—H32B109.5
C16—C15—H15119.6C11—C32—H32C109.5
C14—C15—H15119.6H32A—C32—H32C109.5
C17—C16—C15119.21 (17)H32B—C32—H32C109.5
C17—C16—H16120.4C23—C33—H33A109.5
C15—C16—H16120.4C23—C33—H33B109.5
C16—C17—C18121.34 (17)H33A—C33—H33B109.5
C16—C17—Cl1119.20 (15)C23—C33—H33C109.5
C18—C17—Cl1119.46 (16)H33A—C33—H33C109.5
C17—C18—C19119.02 (18)H33B—C33—H33C109.5
C17—C18—H18120.5
C5—N1—N2—C3−0.3 (2)C19—C14—C15—C160.6 (3)
C5—N1—N2—C6−179.36 (16)C6—C14—C15—C16−177.49 (18)
N1—N2—C3—C40.4 (2)C14—C15—C16—C170.8 (3)
C6—N2—C3—C4179.37 (18)C15—C16—C17—C18−1.5 (3)
N2—C3—C4—C5−0.3 (2)C15—C16—C17—Cl1177.69 (16)
N2—C3—C4—S2178.16 (14)C16—C17—C18—C190.8 (3)
C20—S2—C4—C3108.01 (18)Cl1—C17—C18—C19−178.36 (15)
C20—S2—C4—C5−73.92 (19)C17—C18—C19—C140.6 (3)
N2—N1—C5—C40.10 (19)C15—C14—C19—C18−1.3 (3)
N2—N1—C5—C26179.47 (15)C6—C14—C19—C18176.76 (17)
C3—C4—C5—N10.1 (2)C4—S2—C20—C25−18.3 (2)
S2—C4—C5—N1−178.23 (15)C4—S2—C20—C21162.26 (16)
C3—C4—C5—C26−179.13 (18)C25—C20—C21—C222.6 (3)
S2—C4—C5—C262.5 (3)S2—C20—C21—C22−177.86 (16)
C3—N2—C6—C7−171.8 (2)C20—C21—C22—C230.4 (3)
N1—N2—C6—C77.1 (3)C21—C22—C23—C24−2.7 (3)
C3—N2—C6—C147.6 (3)C21—C22—C23—C33174.9 (2)
N1—N2—C6—C14−173.51 (15)C22—C23—C24—C252.0 (4)
N2—C6—C7—S1−169.62 (14)C33—C23—C24—C25−175.6 (2)
C14—C6—C7—S111.0 (3)C21—C20—C25—C24−3.2 (4)
C8—S1—C7—C6−138.30 (17)S2—C20—C25—C24177.26 (19)
C7—S1—C8—C927.9 (2)C23—C24—C25—C200.9 (4)
C7—S1—C8—C13−154.47 (16)N1—C5—C26—C31−37.2 (2)
C13—C8—C9—C101.3 (3)C4—C5—C26—C31142.1 (2)
S1—C8—C9—C10178.90 (17)N1—C5—C26—C27139.28 (18)
C8—C9—C10—C11−1.3 (4)C4—C5—C26—C27−41.5 (3)
C9—C10—C11—C120.0 (3)C31—C26—C27—C282.1 (3)
C9—C10—C11—C32−179.8 (2)C5—C26—C27—C28−174.36 (18)
C10—C11—C12—C131.3 (3)C26—C27—C28—C29−0.3 (3)
C32—C11—C12—C13−178.9 (2)C27—C28—C29—C30−2.0 (3)
C11—C12—C13—C8−1.3 (3)C27—C28—C29—Cl2178.72 (16)
C9—C8—C13—C12−0.1 (3)C28—C29—C30—C312.3 (3)
S1—C8—C13—C12−177.79 (17)Cl2—C29—C30—C31−178.35 (16)
C7—C6—C14—C19−108.0 (2)C29—C30—C31—C26−0.5 (3)
N2—C6—C14—C1972.6 (2)C27—C26—C31—C30−1.7 (3)
C7—C6—C14—C1570.0 (3)C5—C26—C31—C30174.82 (18)
N2—C6—C14—C15−109.32 (19)
D—H···AD—HH···AD···AD—H···A
C33—H33C···Cg3i0.962.903.851 (3)171
C9—H9···Cg5ii0.933.033.839 (2)147
Table 1

C—H⋯π interactions (Å, °)

D—H⋯AD—HH⋯ADAD—H⋯A
C33—H33CCg3i0.962.903.851 (3)171
C9—H9⋯Cg5ii0.933.033.839 (2)147

Symmetry codes: (i) ; (ii) . Cg3 and Cg5 are the centroids of the C14–C19 and C26–C31 rings, respectively.

  6 in total

1.  Synthesis and hypoglycemic evaluation of substituted pyrazole-4-carboxylic acids.

Authors:  Bertrand Cottineau; Patrick Toto; Christophe Marot; Aline Pipaud; Jacques Chenault
Journal:  Bioorg Med Chem Lett       Date:  2002-08-19       Impact factor: 2.823

2.  A short history of SHELX.

Authors:  George M Sheldrick
Journal:  Acta Crystallogr A       Date:  2007-12-21       Impact factor: 2.290

3.  The anti-inflammatory activities of cannabinoid receptor ligands in mouse peritonitis models.

Authors:  S R Smith; G Denhardt; C Terminelli
Journal:  Eur J Pharmacol       Date:  2001-11-30       Impact factor: 4.432

4.  3,5-Diphenyl-1H-pyrazole derivatives. V--1-Acetyl-4-hydroxy-3,5-diphenyl-2-pyrazoline esters, 4-hydroxy-3,5-diphenyl-1H-pyrazole esters and N-substituted 4-(3-amino-2-hydroxy-1-propoxy)-1-methyl-3,5-diphenyl-1H-pyrazoles with antiarrhythmic, sedative and platelet antiaggregating activities.

Authors:  O Bruno; F Bondavalli; A Ranise; P Schenone; C Losasso; L Cilenti; C Matera; E Marmo
Journal:  Farmaco       Date:  1990-02

5.  Diethyl 3,8-dimethyl-4,7-diazadeca-2,8-dienedioate.

Authors:  Zhi-Min Jin; Li Li; Mei-Chao Li; Mao-Lin Hu; Liang Shen
Journal:  Acta Crystallogr C       Date:  2004-08-11       Impact factor: 1.172

6.  Structure validation in chemical crystallography.

Authors:  Anthony L Spek
Journal:  Acta Crystallogr D Biol Crystallogr       Date:  2009-01-20
  6 in total

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