metal-organic compounds
Bis(3-benzoyl-1,1-di-sec-butylthioureato-κ2O,S)palladium(II)
aDepartment of Chemistry, National Institute of Technology, Tiruchirappalli 620 015, India, bDepartment of Chemistry, University of Malaya, 50603 Kuala Lumpur, Malaysia, and c Chemistry Department, Faculty of, Science, King Abdulaziz University, PO Box 80203 Jeddah, Saudi Arabia
*Correspondence e-mail: edward.tiekink@gmail.com
The complex molecule of the title complex, [Pd(C16H23N2OS)2], is completed by crystallographic twofold symmetry with the metal atom lying on the rotation axis. The PdII atom exists within a slightly distorted square-planar geometry defined by a cis-O2S2 donor set. The dihedral angle formed between the mean planes of the symmetry-related six-membered chelate rings is 12.88 (7)° and the bond lengths within the rings are indicative of significant electron delocalization. In the crystal, molecules aggregate into dimers linked by four C—H⋯O interactions.
Related literature
For background to the synthesis and cytotoxicity of related PdII complexes of N,N-di(alkyl/aryl)-N′-benzoylthiourea ligands, see: Selvakumaran et al. (2011).
Experimental
Crystal data
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Data collection: CrysAlis PRO (Agilent, 2010); cell CrysAlis PRO; data reduction: CrysAlis PRO; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 (Farrugia, 1997) and DIAMOND (Brandenburg, 2006); software used to prepare material for publication: publCIF (Westrip, 2010).
Supporting information
https://doi.org/10.1107/S1600536811036853/hb6404sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536811036853/hb6404Isup2.hkl
The title complex, (I), was prepared and characterized as in the literature (Selvakumaran et al., 2011). Orange blocks were obtained by slow evaporation of a dichloromethane solution of the complex.
The H-atoms were placed in calculated positions (C—H 0.95 to 1.00 Å) and were included in the
in the riding model approximation, with Uiso(H) set to 1.2 to 1.5Uequiv(C).The title complex, (I), was investigated during a study of the synthesis and cytotoxicity profiles of N,N-di(alkyl/aryl)-N'-benzoylthiourea ligands, LH (Selvakumaran et al., 2011).
The PdII atom in (I), Fig. 1, exists in a square planar geometry defined by a cis-O2S2 donor set, Table 1, as found for related PdL2 species (Selvakumaran et al., 2011). The molecule has crystallographically imposed 2-fold symmetry. There are significant deviations from the least-squares plane through the six-membered chelate ring (r.m.s. deviation = 0.233 Å) with the maximum deviations being found for the S1 (0.255 (1) Å) and Pd (–0.163 (1) Å) atoms. The major twist in the ring is found about the N1—C8 bond as seen in the value of the C7—N1—C8—S1 torsion angle of -19.3 (4) °. Nevertheless, the bond distance data, Table 1, are consistent with considerable delocalization of π-electron density over the six atoms; a similar conclusion was made for related species (Selvakumaran et al., 2011). The dihedral angle formed between the symmetry related chelate rings is 12.88 (7) °.
The most prominent intermolecular interactions in the
are of the type C—H···O, Table 2. These involve benzene-H and the coordinated O atoms, and result in the formation of two molecule aggregates sustained, from symmetry, by four such interactions, Fig. 2.For background to the synthesis and cytotoxicity of related PdII complexes of N,N-di(alkyl/aryl)-N'-benzoylthiourea ligands, see: Selvakumaran et al. (2011).
Data collection: CrysAlis PRO (Agilent, 2010); cell
CrysAlis PRO (Agilent, 2010); data reduction: CrysAlis PRO (Agilent, 2010); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 (Farrugia, 1997) and DIAMOND (Brandenburg, 2006); software used to prepare material for publication: publCIF (Westrip, 2010).[Pd(C16H23N2OS)2] | Dx = 1.328 Mg m−3 |
Mr = 689.27 | Mo Kα radiation, λ = 0.71073 Å |
Tetragonal, I4 | Cell parameters from 3599 reflections |
Hall symbol: I -4 | θ = 3.0–29.3° |
a = 13.2737 (1) Å | µ = 0.69 mm−1 |
c = 19.5597 (5) Å | T = 100 K |
V = 3446.25 (9) Å3 | Block, orange |
Z = 4 | 0.30 × 0.25 × 0.20 mm |
F(000) = 1440 |
Agilent SuperNova Dual diffractometer with an Atlas detector | 3229 independent reflections |
Radiation source: SuperNova (Mo) X-ray Source | 3152 reflections with I > 2σ(I) |
Mirror monochromator | Rint = 0.020 |
Detector resolution: 10.4041 pixels mm-1 | θmax = 27.5°, θmin = 3.0° |
ω scans | h = −17→10 |
Absorption correction: multi-scan (CrysAlis PRO; Agilent, 2010) | k = −14→13 |
Tmin = 0.819, Tmax = 0.874 | l = −16→25 |
4752 measured reflections |
Refinement on F2 | Secondary atom site location: difference Fourier map |
Least-squares matrix: full | Hydrogen site location: inferred from neighbouring sites |
R[F2 > 2σ(F2)] = 0.023 | H-atom parameters constrained |
wR(F2) = 0.058 | w = 1/[σ2(Fo2) + (0.0272P)2 + 1.3893P] where P = (Fo2 + 2Fc2)/3 |
S = 1.02 | (Δ/σ)max < 0.001 |
3229 reflections | Δρmax = 0.51 e Å−3 |
186 parameters | Δρmin = −0.44 e Å−3 |
0 restraints | Absolute structure: Flack (1983), 1225 Friedel pairs |
Primary atom site location: structure-invariant direct methods | Absolute structure parameter: −0.02 (2) |
[Pd(C16H23N2OS)2] | Z = 4 |
Mr = 689.27 | Mo Kα radiation |
Tetragonal, I4 | µ = 0.69 mm−1 |
a = 13.2737 (1) Å | T = 100 K |
c = 19.5597 (5) Å | 0.30 × 0.25 × 0.20 mm |
V = 3446.25 (9) Å3 |
Agilent SuperNova Dual diffractometer with an Atlas detector | 3229 independent reflections |
Absorption correction: multi-scan (CrysAlis PRO; Agilent, 2010) | 3152 reflections with I > 2σ(I) |
Tmin = 0.819, Tmax = 0.874 | Rint = 0.020 |
4752 measured reflections |
R[F2 > 2σ(F2)] = 0.023 | H-atom parameters constrained |
wR(F2) = 0.058 | Δρmax = 0.51 e Å−3 |
S = 1.02 | Δρmin = −0.44 e Å−3 |
3229 reflections | Absolute structure: Flack (1983), 1225 Friedel pairs |
186 parameters | Absolute structure parameter: −0.02 (2) |
0 restraints |
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 | ||
Pd | 0.5000 | 0.0000 | 0.076929 (11) | 0.01307 (7) | |
S1 | 0.60853 (5) | 0.04633 (5) | −0.00563 (3) | 0.01761 (13) | |
O1 | 0.59796 (13) | 0.03016 (13) | 0.15347 (9) | 0.0178 (4) | |
N1 | 0.72361 (18) | 0.12436 (17) | 0.09978 (10) | 0.0178 (5) | |
N2 | 0.72955 (17) | 0.20604 (16) | −0.00131 (11) | 0.0183 (5) | |
C1 | 0.7459 (2) | 0.06393 (19) | 0.21341 (13) | 0.0176 (5) | |
C2 | 0.8469 (2) | 0.0954 (2) | 0.21380 (14) | 0.0215 (6) | |
H2 | 0.8761 | 0.1232 | 0.1737 | 0.026* | |
C3 | 0.9035 (2) | 0.0857 (2) | 0.27244 (15) | 0.0270 (6) | |
H3 | 0.9721 | 0.1060 | 0.2723 | 0.032* | |
C4 | 0.8614 (2) | 0.0468 (2) | 0.33146 (14) | 0.0248 (6) | |
H4 | 0.9009 | 0.0404 | 0.3717 | 0.030* | |
C5 | 0.7609 (2) | 0.0169 (2) | 0.33165 (13) | 0.0231 (6) | |
H5 | 0.7315 | −0.0094 | 0.3722 | 0.028* | |
C6 | 0.7041 (2) | 0.02554 (19) | 0.27269 (13) | 0.0193 (5) | |
H6 | 0.6356 | 0.0049 | 0.2729 | 0.023* | |
C7 | 0.68364 (19) | 0.07145 (19) | 0.15006 (13) | 0.0164 (5) | |
C8 | 0.68990 (19) | 0.13061 (19) | 0.03510 (13) | 0.0162 (5) | |
C9 | 0.7978 (2) | 0.2781 (2) | 0.03246 (15) | 0.0223 (6) | |
H9A | 0.8344 | 0.3166 | −0.0030 | 0.027* | |
H9B | 0.8482 | 0.2400 | 0.0593 | 0.027* | |
C10 | 0.7437 (2) | 0.3523 (2) | 0.07997 (17) | 0.0274 (6) | |
H10 | 0.6951 | 0.3133 | 0.1087 | 0.033* | |
C11 | 0.8185 (3) | 0.4033 (3) | 0.12724 (16) | 0.0361 (8) | |
H11A | 0.8555 | 0.3521 | 0.1531 | 0.054* | |
H11B | 0.7824 | 0.4475 | 0.1590 | 0.054* | |
H11C | 0.8660 | 0.4434 | 0.1001 | 0.054* | |
C12 | 0.6836 (3) | 0.4300 (3) | 0.03869 (18) | 0.0389 (8) | |
H12A | 0.6494 | 0.4763 | 0.0700 | 0.058* | |
H12B | 0.6334 | 0.3952 | 0.0105 | 0.058* | |
H12C | 0.7295 | 0.4680 | 0.0091 | 0.058* | |
C13 | 0.71911 (19) | 0.21523 (19) | −0.07512 (15) | 0.0198 (5) | |
H13A | 0.7031 | 0.2861 | −0.0865 | 0.024* | |
H13B | 0.6618 | 0.1731 | −0.0903 | 0.024* | |
C14 | 0.8141 (2) | 0.1834 (2) | −0.11491 (15) | 0.0275 (6) | |
H14 | 0.8674 | 0.2352 | −0.1065 | 0.033* | |
C15 | 0.7901 (3) | 0.1834 (3) | −0.19190 (14) | 0.0362 (8) | |
H15A | 0.8503 | 0.1637 | −0.2176 | 0.054* | |
H15B | 0.7690 | 0.2510 | −0.2059 | 0.054* | |
H15C | 0.7356 | 0.1354 | −0.2011 | 0.054* | |
C16 | 0.8549 (3) | 0.0821 (3) | −0.09144 (17) | 0.0445 (10) | |
H16A | 0.8704 | 0.0851 | −0.0425 | 0.067* | |
H16B | 0.9164 | 0.0662 | −0.1170 | 0.067* | |
H16C | 0.8043 | 0.0297 | −0.0997 | 0.067* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Pd | 0.01199 (15) | 0.01268 (15) | 0.01453 (11) | −0.00124 (12) | 0.000 | 0.000 |
S1 | 0.0181 (3) | 0.0180 (3) | 0.0167 (3) | −0.0044 (2) | 0.0020 (3) | −0.0003 (3) |
O1 | 0.0138 (9) | 0.0227 (10) | 0.0169 (8) | −0.0038 (8) | −0.0002 (8) | 0.0001 (8) |
N1 | 0.0168 (11) | 0.0171 (11) | 0.0196 (11) | −0.0019 (9) | 0.0001 (8) | −0.0007 (8) |
N2 | 0.0183 (11) | 0.0154 (11) | 0.0213 (11) | −0.0027 (8) | 0.0033 (10) | 0.0004 (10) |
C1 | 0.0185 (13) | 0.0148 (13) | 0.0196 (13) | 0.0031 (10) | −0.0001 (11) | −0.0035 (10) |
C2 | 0.0191 (14) | 0.0200 (14) | 0.0254 (15) | −0.0028 (11) | 0.0005 (12) | 0.0022 (12) |
C3 | 0.0167 (13) | 0.0314 (15) | 0.0328 (15) | −0.0021 (12) | −0.0033 (12) | −0.0026 (12) |
C4 | 0.0231 (15) | 0.0270 (16) | 0.0242 (15) | 0.0021 (12) | −0.0096 (12) | −0.0014 (12) |
C5 | 0.0254 (15) | 0.0221 (15) | 0.0220 (14) | −0.0004 (12) | −0.0016 (11) | −0.0012 (11) |
C6 | 0.0155 (13) | 0.0198 (13) | 0.0226 (12) | −0.0005 (10) | −0.0028 (10) | −0.0019 (10) |
C7 | 0.0169 (13) | 0.0123 (12) | 0.0201 (12) | 0.0013 (10) | 0.0014 (11) | −0.0044 (11) |
C8 | 0.0120 (12) | 0.0154 (13) | 0.0212 (12) | 0.0004 (10) | 0.0021 (10) | 0.0001 (11) |
C9 | 0.0240 (15) | 0.0176 (14) | 0.0255 (14) | −0.0096 (11) | 0.0050 (12) | −0.0020 (12) |
C10 | 0.0306 (15) | 0.0201 (14) | 0.0315 (14) | −0.0064 (11) | 0.0099 (15) | −0.0023 (14) |
C11 | 0.047 (2) | 0.0327 (18) | 0.0289 (16) | −0.0097 (15) | 0.0074 (15) | −0.0085 (14) |
C12 | 0.044 (2) | 0.0269 (17) | 0.0458 (19) | 0.0035 (15) | 0.0043 (17) | −0.0046 (15) |
C13 | 0.0205 (13) | 0.0175 (13) | 0.0214 (12) | −0.0003 (10) | 0.0013 (13) | 0.0050 (13) |
C14 | 0.0270 (16) | 0.0302 (17) | 0.0252 (14) | −0.0007 (13) | 0.0067 (13) | 0.0000 (13) |
C15 | 0.045 (2) | 0.0394 (19) | 0.0241 (15) | −0.0005 (16) | 0.0056 (14) | 0.0023 (14) |
C16 | 0.045 (2) | 0.046 (2) | 0.042 (2) | 0.0209 (17) | 0.0167 (16) | 0.0055 (16) |
Pd—O1i | 2.0230 (17) | C9—H9A | 0.9900 |
Pd—O1 | 2.0230 (17) | C9—H9B | 0.9900 |
Pd—S1i | 2.2497 (6) | C10—C11 | 1.517 (4) |
Pd—S1 | 2.2497 (6) | C10—C12 | 1.533 (5) |
S1—C8 | 1.747 (3) | C10—H10 | 1.0000 |
O1—C7 | 1.264 (3) | C11—H11A | 0.9800 |
N1—C7 | 1.320 (3) | C11—H11B | 0.9800 |
N1—C8 | 1.344 (3) | C11—H11C | 0.9800 |
N2—C8 | 1.337 (3) | C12—H12A | 0.9800 |
N2—C13 | 1.455 (3) | C12—H12B | 0.9800 |
N2—C9 | 1.473 (3) | C12—H12C | 0.9800 |
C1—C6 | 1.383 (3) | C13—C14 | 1.541 (4) |
C1—C2 | 1.404 (4) | C13—H13A | 0.9900 |
C1—C7 | 1.493 (3) | C13—H13B | 0.9900 |
C2—C3 | 1.377 (4) | C14—C16 | 1.520 (5) |
C2—H2 | 0.9500 | C14—C15 | 1.539 (4) |
C3—C4 | 1.383 (4) | C14—H14 | 1.0000 |
C3—H3 | 0.9500 | C15—H15A | 0.9800 |
C4—C5 | 1.391 (4) | C15—H15B | 0.9800 |
C4—H4 | 0.9500 | C15—H15C | 0.9800 |
C5—C6 | 1.383 (4) | C16—H16A | 0.9800 |
C5—H5 | 0.9500 | C16—H16B | 0.9800 |
C6—H6 | 0.9500 | C16—H16C | 0.9800 |
C9—C10 | 1.533 (4) | ||
O1i—Pd—O1 | 84.53 (10) | C11—C10—C9 | 110.5 (3) |
O1i—Pd—S1i | 93.76 (5) | C11—C10—C12 | 111.2 (2) |
O1—Pd—S1i | 175.49 (5) | C9—C10—C12 | 110.9 (3) |
O1i—Pd—S1 | 175.49 (5) | C11—C10—H10 | 108.1 |
O1—Pd—S1 | 93.76 (5) | C9—C10—H10 | 108.1 |
S1i—Pd—S1 | 88.26 (3) | C12—C10—H10 | 108.1 |
C8—S1—Pd | 104.10 (9) | C10—C11—H11A | 109.5 |
C7—O1—Pd | 128.68 (16) | C10—C11—H11B | 109.5 |
C7—N1—C8 | 126.9 (2) | H11A—C11—H11B | 109.5 |
C8—N2—C13 | 123.6 (2) | C10—C11—H11C | 109.5 |
C8—N2—C9 | 119.3 (2) | H11A—C11—H11C | 109.5 |
C13—N2—C9 | 116.7 (2) | H11B—C11—H11C | 109.5 |
C6—C1—C2 | 119.2 (2) | C10—C12—H12A | 109.5 |
C6—C1—C7 | 119.9 (2) | C10—C12—H12B | 109.5 |
C2—C1—C7 | 120.9 (2) | H12A—C12—H12B | 109.5 |
C3—C2—C1 | 119.9 (3) | C10—C12—H12C | 109.5 |
C3—C2—H2 | 120.1 | H12A—C12—H12C | 109.5 |
C1—C2—H2 | 120.1 | H12B—C12—H12C | 109.5 |
C2—C3—C4 | 120.6 (3) | N2—C13—C14 | 113.6 (2) |
C2—C3—H3 | 119.7 | N2—C13—H13A | 108.8 |
C4—C3—H3 | 119.7 | C14—C13—H13A | 108.8 |
C3—C4—C5 | 119.8 (3) | N2—C13—H13B | 108.8 |
C3—C4—H4 | 120.1 | C14—C13—H13B | 108.8 |
C5—C4—H4 | 120.1 | H13A—C13—H13B | 107.7 |
C6—C5—C4 | 119.8 (3) | C16—C14—C15 | 111.7 (3) |
C6—C5—H5 | 120.1 | C16—C14—C13 | 112.4 (2) |
C4—C5—H5 | 120.1 | C15—C14—C13 | 108.9 (3) |
C1—C6—C5 | 120.7 (2) | C16—C14—H14 | 107.9 |
C1—C6—H6 | 119.6 | C15—C14—H14 | 107.9 |
C5—C6—H6 | 119.6 | C13—C14—H14 | 107.9 |
O1—C7—N1 | 129.2 (2) | C14—C15—H15A | 109.5 |
O1—C7—C1 | 115.2 (2) | C14—C15—H15B | 109.5 |
N1—C7—C1 | 115.6 (2) | H15A—C15—H15B | 109.5 |
N2—C8—N1 | 114.6 (2) | C14—C15—H15C | 109.5 |
N2—C8—S1 | 118.7 (2) | H15A—C15—H15C | 109.5 |
N1—C8—S1 | 126.5 (2) | H15B—C15—H15C | 109.5 |
N2—C9—C10 | 113.6 (2) | C14—C16—H16A | 109.5 |
N2—C9—H9A | 108.8 | C14—C16—H16B | 109.5 |
C10—C9—H9A | 108.8 | H16A—C16—H16B | 109.5 |
N2—C9—H9B | 108.8 | C14—C16—H16C | 109.5 |
C10—C9—H9B | 108.8 | H16A—C16—H16C | 109.5 |
H9A—C9—H9B | 107.7 | H16B—C16—H16C | 109.5 |
O1i—Pd—S1—C8 | 42.5 (7) | C2—C1—C7—O1 | 172.0 (2) |
O1—Pd—S1—C8 | −24.95 (10) | C6—C1—C7—N1 | 168.8 (2) |
S1i—Pd—S1—C8 | 159.09 (10) | C2—C1—C7—N1 | −11.2 (4) |
O1i—Pd—O1—C7 | −168.9 (2) | C13—N2—C8—N1 | 167.7 (2) |
S1i—Pd—O1—C7 | 123.2 (6) | C9—N2—C8—N1 | −4.7 (3) |
S1—Pd—O1—C7 | 6.9 (2) | C13—N2—C8—S1 | −8.0 (3) |
C6—C1—C2—C3 | 1.4 (4) | C9—N2—C8—S1 | 179.60 (19) |
C7—C1—C2—C3 | −178.6 (2) | C7—N1—C8—N2 | 165.5 (2) |
C1—C2—C3—C4 | −1.0 (4) | C7—N1—C8—S1 | −19.3 (4) |
C2—C3—C4—C5 | 0.1 (4) | Pd—S1—C8—N2 | −148.11 (19) |
C3—C4—C5—C6 | 0.6 (4) | Pd—S1—C8—N1 | 36.8 (2) |
C2—C1—C6—C5 | −0.7 (4) | C8—N2—C9—C10 | −73.8 (3) |
C7—C1—C6—C5 | 179.2 (2) | C13—N2—C9—C10 | 113.2 (3) |
C4—C5—C6—C1 | −0.2 (4) | N2—C9—C10—C11 | 164.1 (3) |
Pd—O1—C7—N1 | 15.7 (4) | N2—C9—C10—C12 | −72.2 (3) |
Pd—O1—C7—C1 | −168.02 (16) | C8—N2—C13—C14 | −102.4 (3) |
C8—N1—C7—O1 | −13.8 (4) | C9—N2—C13—C14 | 70.2 (3) |
C8—N1—C7—C1 | 169.9 (2) | N2—C13—C14—C16 | 48.6 (3) |
C6—C1—C7—O1 | −8.0 (3) | N2—C13—C14—C15 | 172.9 (2) |
Symmetry code: (i) −x+1, −y, z. |
D—H···A | D—H | H···A | D···A | D—H···A |
C6—H6···O1ii | 0.95 | 2.43 | 3.179 (3) | 136 |
Symmetry code: (ii) y+1/2, −x+1/2, −z+1/2. |
Experimental details
Crystal data | |
Chemical formula | [Pd(C16H23N2OS)2] |
Mr | 689.27 |
Crystal system, space group | Tetragonal, I4 |
Temperature (K) | 100 |
a, c (Å) | 13.2737 (1), 19.5597 (5) |
V (Å3) | 3446.25 (9) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.69 |
Crystal size (mm) | 0.30 × 0.25 × 0.20 |
Data collection | |
Diffractometer | Agilent SuperNova Dual diffractometer with an Atlas detector |
Absorption correction | Multi-scan (CrysAlis PRO; Agilent, 2010) |
Tmin, Tmax | 0.819, 0.874 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 4752, 3229, 3152 |
Rint | 0.020 |
(sin θ/λ)max (Å−1) | 0.649 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.023, 0.058, 1.02 |
No. of reflections | 3229 |
No. of parameters | 186 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.51, −0.44 |
Absolute structure | Flack (1983), 1225 Friedel pairs |
Absolute structure parameter | −0.02 (2) |
Computer programs: CrysAlis PRO (Agilent, 2010), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), ORTEP-3 (Farrugia, 1997) and DIAMOND (Brandenburg, 2006), publCIF (Westrip, 2010).
D—H···A | D—H | H···A | D···A | D—H···A |
C6—H6···O1i | 0.95 | 2.43 | 3.179 (3) | 136 |
Symmetry code: (i) y+1/2, −x+1/2, −z+1/2. |
Footnotes
‡Additional correspondence author, e-mail: kar@nitt.edu.
Acknowledgements
NS thanks NITT for a Fellowship. The authors thank the University of Malaya for supporting this study.
References
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The title complex, (I), was investigated during a study of the synthesis and cytotoxicity profiles of N,N-di(alkyl/aryl)-N'-benzoylthiourea ligands, LH (Selvakumaran et al., 2011).
The PdII atom in (I), Fig. 1, exists in a square planar geometry defined by a cis-O2S2 donor set, Table 1, as found for related PdL2 species (Selvakumaran et al., 2011). The molecule has crystallographically imposed 2-fold symmetry. There are significant deviations from the least-squares plane through the six-membered chelate ring (r.m.s. deviation = 0.233 Å) with the maximum deviations being found for the S1 (0.255 (1) Å) and Pd (–0.163 (1) Å) atoms. The major twist in the ring is found about the N1—C8 bond as seen in the value of the C7—N1—C8—S1 torsion angle of -19.3 (4) °. Nevertheless, the bond distance data, Table 1, are consistent with considerable delocalization of π-electron density over the six atoms; a similar conclusion was made for related species (Selvakumaran et al., 2011). The dihedral angle formed between the symmetry related chelate rings is 12.88 (7) °.
The most prominent intermolecular interactions in the crystal structure are of the type C—H···O, Table 2. These involve benzene-H and the coordinated O atoms, and result in the formation of two molecule aggregates sustained, from symmetry, by four such interactions, Fig. 2.