Supporting information
Crystallographic Information File (CIF) https://doi.org/10.1107/S010827010000946X/ob1036sup1.cif | |
Structure factor file (CIF format) https://doi.org/10.1107/S010827010000946X/ob1036Isup2.hkl |
CCDC reference: 152591
The ligand used in this work was synthesized in this laboratory and the synthetic procedure will be described elsewhere. The title compound was prepared by the reaction of equimolar amounts of the ligand and PdCl2(PhCN)2 in benzene. The yellow precipitate that formed immediately was filtered off and recrystallized from acetonitrile by slow evaporation to give orange single crystals melting at 411–413 K.
H atoms were added at calculated positions and refined using a riding model. Anisotropic displacement parameters were used for all non-H atoms. H atoms were given isotropic displacement parameters equal to 1.2 times the equivalent isotropic displacement parameter of the atom to which they are attached. Since the large positive (1.46 e Å−3) and negative (−1.40 e Å−3) difference Fourier peaks are located at short distances form Pd (1.06 and 0.88 Å), these peaks can be attributed to ghosts of the heavy Pd atom.
Data collection: SMART (Siemens, 1996); cell refinement: SAINT (Siemens, 1996); data reduction: SHELXTL (Siemens, 1996); program(s) used to solve structure: SHELXTL; program(s) used to refine structure: SHELXTL; molecular graphics: SHELXTL; software used to prepare material for publication: SHELXTL.
Fig. 1. Perspective view of (I) with atom displacement ellipsoids at the 50% probability level. |
[PdCl2(C20H26O2S2)] | F(000) = 1096 |
Mr = 539.83 | Dx = 1.573 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
a = 22.155 (2) Å | Cell parameters from 13914 reflections |
b = 7.7440 (8) Å | θ = 0.9–28.3° |
c = 13.6293 (15) Å | µ = 1.24 mm−1 |
β = 102.906 (2)° | T = 298 K |
V = 2279.2 (4) Å3 | Plate, orange |
Z = 4 | 0.4 × 0.3 × 0.1 mm |
CCD area detector diffractometer | 5520 independent reflections |
Radiation source: fine-focus sealed tube | 3499 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.073 |
phi and ω scans | θmax = 28.3°, θmin = 0.9° |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | h = −29→28 |
Tmin = 0.601, Tmax = 0.928 | k = −10→9 |
13914 measured reflections | l = −17→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)] = 0.068 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.200 | H-atom parameters constrained |
S = 1.06 | w = 1/[σ2(Fo2) + (0.0863P)2 + 8.8015P] where P = (Fo2 + 2Fc2)/3 |
5520 reflections | (Δ/σ)max < 0.001 |
244 parameters | Δρmax = 1.46 e Å−3 |
0 restraints | Δρmin = −1.40 e Å−3 |
[PdCl2(C20H26O2S2)] | V = 2279.2 (4) Å3 |
Mr = 539.83 | Z = 4 |
Monoclinic, P21/c | Mo Kα radiation |
a = 22.155 (2) Å | µ = 1.24 mm−1 |
b = 7.7440 (8) Å | T = 298 K |
c = 13.6293 (15) Å | 0.4 × 0.3 × 0.1 mm |
β = 102.906 (2)° |
CCD area detector diffractometer | 5520 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | 3499 reflections with I > 2σ(I) |
Tmin = 0.601, Tmax = 0.928 | Rint = 0.073 |
13914 measured reflections |
R[F2 > 2σ(F2)] = 0.068 | 0 restraints |
wR(F2) = 0.200 | H-atom parameters constrained |
S = 1.06 | Δρmax = 1.46 e Å−3 |
5520 reflections | Δρmin = −1.40 e Å−3 |
244 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 | ||
Pd | 0.20054 (3) | 0.51171 (6) | 0.54504 (4) | 0.03181 (18) | |
Cl1 | 0.22565 (11) | 0.7496 (2) | 0.46249 (15) | 0.0503 (5) | |
Cl2 | 0.17285 (12) | 0.2723 (3) | 0.62661 (15) | 0.0571 (6) | |
S1 | 0.18707 (9) | 0.3705 (2) | 0.39221 (13) | 0.0390 (4) | |
S2 | 0.21411 (9) | 0.6469 (2) | 0.69953 (13) | 0.0377 (4) | |
O1 | 0.0582 (3) | 0.5180 (9) | 0.3358 (5) | 0.0617 (17) | |
O2 | 0.0774 (2) | 0.7052 (8) | 0.5324 (4) | 0.0470 (13) | |
C1 | 0.3396 (6) | 0.2830 (18) | 0.5219 (11) | 0.098 (4) | |
H1 | 0.3219 | 0.2745 | 0.5807 | 0.118* | |
C2 | 0.4025 (9) | 0.336 (3) | 0.5318 (18) | 0.153 (8) | |
H2 | 0.4283 | 0.3586 | 0.5980 | 0.183* | |
C3 | 0.4265 (9) | 0.355 (2) | 0.448 (2) | 0.153 (10) | |
H3 | 0.4686 | 0.3953 | 0.4538 | 0.183* | |
C4 | 0.3911 (8) | 0.316 (2) | 0.3575 (17) | 0.128 (6) | |
H4 | 0.4086 | 0.3247 | 0.2984 | 0.154* | |
C5 | 0.3309 (5) | 0.2654 (16) | 0.3465 (10) | 0.083 (3) | |
H5 | 0.3060 | 0.2433 | 0.2796 | 0.100* | |
C6 | 0.3049 (4) | 0.2449 (11) | 0.4288 (7) | 0.056 (2) | |
C7 | 0.2390 (4) | 0.1877 (11) | 0.4150 (7) | 0.052 (2) | |
H7A | 0.2338 | 0.1270 | 0.4748 | 0.063* | |
H7B | 0.2289 | 0.1085 | 0.3585 | 0.063* | |
C8 | 0.1140 (4) | 0.2533 (12) | 0.3745 (6) | 0.054 (2) | |
H8A | 0.1021 | 0.2122 | 0.3057 | 0.065* | |
H8B | 0.1193 | 0.1537 | 0.4187 | 0.065* | |
C9 | 0.0635 (4) | 0.3665 (14) | 0.3966 (7) | 0.062 (3) | |
H9A | 0.0245 | 0.3042 | 0.3823 | 0.075* | |
H9B | 0.0731 | 0.3983 | 0.4672 | 0.075* | |
C10 | 0.0190 (4) | 0.6472 (17) | 0.3640 (7) | 0.074 (3) | |
H10A | −0.0110 | 0.5919 | 0.3957 | 0.089* | |
H10B | −0.0035 | 0.7056 | 0.3040 | 0.089* | |
C11 | 0.0549 (5) | 0.7786 (14) | 0.4353 (7) | 0.067 (3) | |
H11A | 0.0895 | 0.8201 | 0.4091 | 0.080* | |
H11B | 0.0284 | 0.8762 | 0.4406 | 0.080* | |
C12 | 0.1066 (4) | 0.8303 (11) | 0.6046 (7) | 0.053 (2) | |
H12A | 0.0758 | 0.9089 | 0.6198 | 0.063* | |
H12B | 0.1362 | 0.8971 | 0.5776 | 0.063* | |
C13 | 0.1391 (4) | 0.7388 (11) | 0.6987 (6) | 0.048 (2) | |
H13A | 0.1123 | 0.6467 | 0.7119 | 0.058* | |
H13B | 0.1439 | 0.8198 | 0.7542 | 0.058* | |
C14 | 0.2631 (4) | 0.8373 (10) | 0.7098 (6) | 0.0446 (18) | |
H14A | 0.2523 | 0.9039 | 0.6481 | 0.054* | |
H14B | 0.2566 | 0.9094 | 0.7647 | 0.054* | |
C15 | 0.3298 (4) | 0.7849 (12) | 0.7285 (7) | 0.052 (2) | |
C16 | 0.3643 (5) | 0.8104 (19) | 0.6555 (9) | 0.087 (4) | |
H16 | 0.3443 | 0.8581 | 0.5906 | 0.104* | |
C17 | 0.4260 (7) | 0.769 (3) | 0.6745 (13) | 0.132 (7) | |
H17 | 0.4501 | 0.7940 | 0.6248 | 0.159* | |
C18 | 0.4534 (6) | 0.692 (3) | 0.7637 (16) | 0.128 (7) | |
H18 | 0.4965 | 0.6575 | 0.7763 | 0.154* | |
C19 | 0.4202 (6) | 0.665 (2) | 0.8341 (13) | 0.112 (5) | |
H19 | 0.4401 | 0.6138 | 0.8980 | 0.134* | |
C20 | 0.3582 (5) | 0.7103 (17) | 0.8167 (10) | 0.084 (3) | |
H20 | 0.3350 | 0.6882 | 0.8679 | 0.101* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Pd | 0.0413 (3) | 0.0270 (3) | 0.0276 (3) | −0.0030 (2) | 0.0088 (2) | −0.0001 (2) |
Cl1 | 0.0758 (14) | 0.0362 (10) | 0.0417 (10) | −0.0131 (10) | 0.0191 (9) | 0.0033 (8) |
Cl2 | 0.0936 (17) | 0.0378 (10) | 0.0410 (11) | −0.0189 (11) | 0.0176 (11) | 0.0039 (8) |
S1 | 0.0528 (11) | 0.0332 (9) | 0.0317 (9) | −0.0070 (8) | 0.0108 (8) | −0.0039 (7) |
S2 | 0.0486 (11) | 0.0345 (9) | 0.0300 (9) | −0.0043 (8) | 0.0086 (8) | −0.0030 (7) |
O1 | 0.056 (4) | 0.088 (5) | 0.042 (3) | 0.000 (3) | 0.012 (3) | 0.000 (3) |
O2 | 0.045 (3) | 0.056 (3) | 0.038 (3) | 0.001 (3) | 0.007 (2) | 0.000 (2) |
C1 | 0.086 (9) | 0.100 (10) | 0.095 (9) | 0.028 (8) | −0.007 (7) | −0.021 (8) |
C2 | 0.087 (13) | 0.150 (18) | 0.19 (2) | 0.004 (12) | −0.048 (12) | −0.014 (16) |
C3 | 0.077 (12) | 0.089 (12) | 0.28 (3) | −0.014 (9) | 0.017 (16) | −0.011 (17) |
C4 | 0.081 (11) | 0.104 (12) | 0.20 (2) | 0.001 (9) | 0.029 (11) | 0.005 (13) |
C5 | 0.071 (8) | 0.081 (8) | 0.096 (9) | 0.007 (6) | 0.018 (6) | 0.010 (7) |
C6 | 0.069 (6) | 0.038 (4) | 0.059 (6) | 0.015 (4) | 0.012 (5) | −0.001 (4) |
C7 | 0.070 (6) | 0.038 (4) | 0.053 (5) | −0.004 (4) | 0.021 (4) | −0.013 (4) |
C8 | 0.063 (6) | 0.053 (5) | 0.044 (5) | −0.016 (4) | 0.007 (4) | −0.013 (4) |
C9 | 0.056 (6) | 0.085 (7) | 0.044 (5) | −0.029 (5) | 0.009 (4) | −0.009 (5) |
C10 | 0.049 (6) | 0.129 (11) | 0.043 (5) | 0.013 (6) | 0.005 (4) | 0.004 (6) |
C11 | 0.063 (6) | 0.070 (7) | 0.064 (6) | 0.017 (5) | 0.006 (5) | 0.018 (5) |
C12 | 0.043 (5) | 0.052 (5) | 0.065 (6) | 0.001 (4) | 0.015 (4) | −0.011 (4) |
C13 | 0.043 (4) | 0.057 (5) | 0.048 (5) | −0.008 (4) | 0.019 (4) | −0.009 (4) |
C14 | 0.050 (5) | 0.037 (4) | 0.048 (5) | −0.013 (4) | 0.014 (4) | −0.012 (3) |
C15 | 0.046 (5) | 0.051 (5) | 0.058 (5) | −0.010 (4) | 0.008 (4) | −0.015 (4) |
C16 | 0.055 (6) | 0.142 (12) | 0.066 (7) | −0.030 (7) | 0.020 (5) | −0.019 (7) |
C17 | 0.079 (10) | 0.22 (2) | 0.107 (12) | −0.031 (12) | 0.032 (9) | −0.056 (13) |
C18 | 0.048 (8) | 0.165 (17) | 0.172 (17) | −0.010 (9) | 0.024 (10) | −0.064 (14) |
C19 | 0.057 (8) | 0.129 (13) | 0.131 (13) | 0.009 (8) | −0.020 (8) | −0.002 (10) |
C20 | 0.060 (7) | 0.096 (9) | 0.093 (9) | 0.001 (6) | 0.009 (6) | 0.012 (7) |
Pd—Cl1 | 2.291 (2) | C8—H8B | 0.9700 |
Pd—S2 | 2.3102 (18) | C9—H9A | 0.9700 |
Pd—S1 | 2.3121 (18) | C9—H9B | 0.9700 |
Pd—Cl2 | 2.314 (2) | C10—C11 | 1.505 (15) |
S1—C7 | 1.807 (9) | C10—H10A | 0.9700 |
S1—C8 | 1.824 (8) | C10—H10B | 0.9700 |
S2—C13 | 1.805 (8) | C11—H11A | 0.9700 |
S2—C14 | 1.818 (7) | C11—H11B | 0.9700 |
O1—C9 | 1.425 (12) | C12—C13 | 1.501 (12) |
O1—C10 | 1.432 (12) | C12—H12A | 0.9700 |
O2—C11 | 1.424 (10) | C12—H12B | 0.9700 |
O2—C12 | 1.429 (10) | C13—H13A | 0.9700 |
C1—C6 | 1.361 (15) | C13—H13B | 0.9700 |
C1—C2 | 1.43 (2) | C14—C15 | 1.497 (12) |
C1—H1 | 0.9700 | C14—H14A | 0.9700 |
C2—C3 | 1.38 (3) | C14—H14B | 0.9700 |
C2—H2 | 0.9700 | C15—C20 | 1.356 (14) |
C3—C4 | 1.34 (3) | C15—C16 | 1.397 (13) |
C3—H3 | 0.9700 | C16—C17 | 1.371 (18) |
C4—C5 | 1.367 (18) | C16—H16 | 0.9700 |
C4—H4 | 0.9700 | C17—C18 | 1.37 (2) |
C5—C6 | 1.380 (14) | C17—H17 | 0.9700 |
C5—H5 | 0.9700 | C18—C19 | 1.35 (2) |
C6—C7 | 1.497 (13) | C18—H18 | 0.9700 |
C7—H7A | 0.9700 | C19—C20 | 1.384 (16) |
C7—H7B | 0.9700 | C19—H19 | 0.9700 |
C8—C9 | 1.504 (13) | C20—H20 | 0.9700 |
C8—H8A | 0.9700 | ||
Cl1—Pd—S2 | 94.98 (7) | H9A—C9—H9B | 108.2 |
Cl1—Pd—S1 | 86.25 (7) | O1—C10—C11 | 112.4 (8) |
S2—Pd—S1 | 178.72 (7) | O1—C10—H10A | 109.1 |
Cl1—Pd—Cl2 | 178.70 (9) | C11—C10—H10A | 109.1 |
S2—Pd—Cl2 | 85.40 (7) | O1—C10—H10B | 109.1 |
S1—Pd—Cl2 | 93.39 (7) | C11—C10—H10B | 109.1 |
C7—S1—C8 | 98.4 (4) | H10A—C10—H10B | 107.9 |
C7—S1—Pd | 105.5 (3) | O2—C11—C10 | 110.8 (8) |
C8—S1—Pd | 106.7 (3) | O2—C11—H11A | 109.5 |
C13—S2—C14 | 102.4 (4) | C10—C11—H11A | 109.5 |
C13—S2—Pd | 103.9 (3) | O2—C11—H11B | 109.5 |
C14—S2—Pd | 113.0 (3) | C10—C11—H11B | 109.5 |
C9—O1—C10 | 113.3 (7) | H11A—C11—H11B | 108.1 |
C11—O2—C12 | 112.3 (7) | O2—C12—C13 | 109.0 (7) |
C6—C1—C2 | 119.0 (16) | O2—C12—H12A | 109.9 |
C6—C1—H1 | 120.5 | C13—C12—H12A | 109.9 |
C2—C1—H1 | 120.5 | O2—C12—H12B | 109.9 |
C3—C2—C1 | 120.1 (18) | C13—C12—H12B | 109.9 |
C3—C2—H2 | 119.9 | H12A—C12—H12B | 108.3 |
C1—C2—H2 | 119.9 | C12—C13—S2 | 117.2 (6) |
C4—C3—C2 | 119.1 (19) | C12—C13—H13A | 108.0 |
C4—C3—H3 | 120.4 | S2—C13—H13A | 108.0 |
C2—C3—H3 | 120.4 | C12—C13—H13B | 108.0 |
C3—C4—C5 | 122 (2) | S2—C13—H13B | 108.0 |
C3—C4—H4 | 119.2 | H13A—C13—H13B | 107.2 |
C5—C4—H4 | 119.2 | C15—C14—S2 | 110.0 (6) |
C4—C5—C6 | 121.2 (14) | C15—C14—H14A | 109.7 |
C4—C5—H5 | 119.4 | S2—C14—H14A | 109.7 |
C6—C5—H5 | 119.4 | C15—C14—H14B | 109.7 |
C1—C6—C5 | 118.8 (11) | S2—C14—H14B | 109.7 |
C1—C6—C7 | 120.9 (10) | H14A—C14—H14B | 108.2 |
C5—C6—C7 | 120.3 (9) | C20—C15—C16 | 118.1 (10) |
C6—C7—S1 | 110.9 (6) | C20—C15—C14 | 120.8 (9) |
C6—C7—H7A | 109.5 | C16—C15—C14 | 121.1 (9) |
S1—C7—H7A | 109.5 | C17—C16—C15 | 121.0 (13) |
C6—C7—H7B | 109.5 | C17—C16—H16 | 119.5 |
S1—C7—H7B | 109.5 | C15—C16—H16 | 119.5 |
H7A—C7—H7B | 108.1 | C18—C17—C16 | 119.6 (15) |
C9—C8—S1 | 111.2 (6) | C18—C17—H17 | 120.2 |
C9—C8—H8A | 109.4 | C16—C17—H17 | 120.2 |
S1—C8—H8A | 109.4 | C19—C18—C17 | 119.7 (14) |
C9—C8—H8B | 109.4 | C19—C18—H18 | 120.1 |
S1—C8—H8B | 109.4 | C17—C18—H18 | 120.1 |
H8A—C8—H8B | 108.0 | C18—C19—C20 | 121.1 (15) |
O1—C9—C8 | 109.4 (7) | C18—C19—H19 | 119.5 |
O1—C9—H9A | 109.8 | C20—C19—H19 | 119.5 |
C8—C9—H9A | 109.8 | C15—C20—C19 | 120.4 (13) |
O1—C9—H9B | 109.8 | C15—C20—H20 | 119.8 |
C8—C9—H9B | 109.8 | C19—C20—H20 | 119.8 |
S1—C8—C9—O1 | 55.6 (8) | O2—C12—C13—S2 | 80.6 (8) |
O1—C10—C11—O2 | −71.7 (11) |
Experimental details
Crystal data | |
Chemical formula | [PdCl2(C20H26O2S2)] |
Mr | 539.83 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 298 |
a, b, c (Å) | 22.155 (2), 7.7440 (8), 13.6293 (15) |
β (°) | 102.906 (2) |
V (Å3) | 2279.2 (4) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 1.24 |
Crystal size (mm) | 0.4 × 0.3 × 0.1 |
Data collection | |
Diffractometer | CCD area detector diffractometer |
Absorption correction | Multi-scan (SADABS; Sheldrick, 1996) |
Tmin, Tmax | 0.601, 0.928 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 13914, 5520, 3499 |
Rint | 0.073 |
(sin θ/λ)max (Å−1) | 0.667 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.068, 0.200, 1.06 |
No. of reflections | 5520 |
No. of parameters | 244 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 1.46, −1.40 |
Computer programs: SMART (Siemens, 1996), SAINT (Siemens, 1996), SHELXTL (Siemens, 1996), SHELXTL.
Pd—Cl1 | 2.291 (2) | Pd—S1 | 2.3121 (18) |
Pd—S2 | 2.3102 (18) | Pd—Cl2 | 2.314 (2) |
Cl1—Pd—S2 | 94.98 (7) | S2—Pd—Cl2 | 85.40 (7) |
Cl1—Pd—S1 | 86.25 (7) | S1—Pd—Cl2 | 93.39 (7) |
S1—C8—C9—O1 | 55.6 (8) | O2—C12—C13—S2 | 80.6 (8) |
O1—C10—C11—O2 | −71.7 (11) |
The ligands with mixed O/S donor sets have attracted much interest especially in recent years (Cameron et al., 1997; Casabó et al., 1995; Grant et al., 1998). According to our preliminary results, the acyclic S2O2 donor-type ligand in the title compound shows the superior performances as a silver(I) ionophore than its cyclic analog compounds in the areas of solvent extraction, membrane transport and ion-selective electrodes (Lee et al., 2000).
As a part of our continuing interest on the complexation properties of cyclic and acyclic oxathia mixed donor ligands with thiaphilic metal ions (Chung et al., 1997; Jung et al., 1999; Yoon et al., 2000), the preparation and crystal structure of the PdII complex with the acyclic S2O2 donor-type ligand, (I), are presented here. \sch
As shown in Fig. 1, the Pd atom is in a trans-type square-planar arrangement coordinated by two S atoms of the dithiadioxa chelate and two Cl− ions. On the other hand, the distances of a Pd···O2 [3.084 (5) Å] is significantly shorter than those of a Pd···O1 [3.750 (6) Å]. The Pd···O2 distance is slightly less than the sum of the van der Waals radii (3.10 Å) (Huheey et al., 1993) of atoms concerned. Assuming the distorted pseudo square-pyramidal geometry, the basal square plane consisting of Pd, Cl1, Cl2, S1 and S2 rotates approximately 18° around the S1—Pd—S2 axis, keeping the Pd—S bond distance. In addition, there are intramolecular interactions between Cl and H atoms attached to C7 and C14 atoms [Cl1···H14A (2.75 Å) and Cl2···H7A (2.94 Å)]. These interactions above mentioned may be related to the asymmetric conformation of the chelate ring, although the chemical diagram suggests that the chelate ring has a chemical twofold axis passing through the midpoint of the O1—C10—C11—O2 bond and the Pd atom.
The molecular structures of a number of palladium(II) complexes with trans-dichloro and S-ligands have been determined (Flower & Griffiths, 1978; Clark et al., 1991; Parvez et al., 1995). But, to our knowledge, all of the S-ligands in these complexes were monodentate.
A comparison of bond lengths and angles around the Pd atom in the title compound with the data corresponding trans-dichlorobis(L)PdII complexes, where L are monodentate S-ligands, such as thiomorpholine-3-one (Flower & Griffiths, 1978), 2,3-dihydrobenzo[b]thiophene-S (Clark et al., 1991), 2,3-dihydro-methylbenzo[b]thiophenes (Clark et al., 1993), and 7-thiabicyclo[2.2.1]-heptane (Parvez et al., 1995) reveals that there are no significant differences in the dimensions around the square-planar Pd atom. The dimensions Pd—S, Pd—Cl and S—Pd—Cl in the above listed trans-dichlorobis(L)PdII complexes are 2.293–2.330 (3), 2.283–2.309 (3) Å and 84.1–95.9 (1)°, respectively.