metal-organic compounds
trans-Dichloridobis[diphenyl(4-vinylphenyl)phosphane-κP]palladium(II)
aResearch Centre for Synthesis and Catalysis, Department of Chemistry, University of Johannesburg, PO Box 524, Auckland Park 2006, Johannesburg, South Africa
*Correspondence e-mail: rmeijboom@uj.ac.za
In the title compound, [PdCl2(C20H17P)2], the PdII atom lies on a center of symmetry, resulting in a distorted trans-square-planar geometry. The Pd—P and Pd—Cl bond lengths are 2.3366 (7) and 2.2966 (7) Å, respectively. The vinyl group is disordered over two sets of sites in a 0.696 (15):0.304 (15) ratio.
Related literature
For a review on related compounds, see: Spessard & Miessler (1996). For the synthesis of the starting materials, see: Drew & Doyle (1990). For similar R-P2PdCl2 compounds, see: Ogutu & Meijboom (2011); Muller & Meijboom (2010a,b).
Experimental
Crystal data
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Data collection: APEX2 (Bruker, 2005); cell SAINT-Plus (Bruker, 2004); data reduction: SAINT-Plus and XPREP (Bruker, 2004); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: DIAMOND (Brandenburg, 2005); software used to prepare material for publication: WinGX (Farrugia, 1999).
Supporting information
https://doi.org/10.1107/S1600536811044795/fi2114sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536811044795/fi2114Isup2.hkl
Diphenylphosphinostyrene (0.05 g, 0.35 mmol) was dissolved in acetone (5 cm3). A solution of [Pd(COD)Cl2] (0.05 g, 0.17 mmol) in acetone (5 cm3) was added to the phosphine solution. The mixture was stirred for 5 minutes, after which the solution was left to crystallize. Yellow crystals of the title compound were obtained.
H atoms were placed in geometrically idealized positions (C—H = 0.95–0.98) and constrained to ride on their parent atoms with Uiso(H) = 1.2Ueq(C).
Transition metal complexes containing phosphine, arsine and stibine ligands are widely being investigated in various fields of organometallic chemistry (Spessard & Miessler, 1996). As part of a systematic investigation involving complexes with the general formula trans-[MX2(L)2] (M = Pt or Pd; X = halogen, Me, Ph; L = Group 15 donor ligand), crystals of the title compound, were obtained.
[PdCl2(L)2] (L = tertiary phosphine, arsine or stibine) complexes can conveniently be prepared by the substitution of 1,5-cyclooctadiene (COD) from [PdCl2(COD)]. The title compound, trans-[PdCl2{P(4—H2C=CHC6H4)Ph2}2], crystallizes in the triclinic spacegroup P1, with the Pd atom on a center of symmetry and each pair of equivalent ligands in a mutually trans orientation. The geometry is, therefore, slightly distorted square planar and the Pd atom is not elevated out of the coordinating atom plane. All angles in the are close to the ideal value of 90°, with P—Pd—Cl = 85.83 (4)° and P—Pd—Cli = 94.17 (4)°. As required by the the P—Pd—Pi and Cl—Pd—Cli angles are 180°. No weak intermolecular interactions were observed.
The title compound compares well with other closely related PdII complexes from the literature containing two chloro and two tertiary phosphine ligands in a trans geometry (Muller & Meijboom, 2010a; 2010b). The title compound, having a Pd—Cl bond length of 2.2969 (14) Å and a Pd—P bond length of 2.3367 (12) Å, fits well into the typical range for complexes of this kind. Notably the title compound did not crystallize as a solvated complex; these type of PdII complexes have a tendency to crystallize as solvates (Meijboom & Omondi, 2011).
Large thermal vibrations on the periphery of the molecule results in a poorly defined C=C bond length. Disordered modelling resulted in an unstable refinement.
For a review on related compounds see: Spessard & Miessler (1996). For the synthesis of the starting materials, see: Drew & Doyle (1990). For pseudo-polymorphs of trans-P2PdCl2 compounds, see: Meijboom & Omondi (2011). For the structures of similar P2PdCl2 compounds, see: Muller & Meijboom (2010a,b).
Data collection: APEX2 (Bruker, 2005); cell
SAINT-Plus (Bruker, 2004); data reduction: SAINT-Plus and XPREP (Bruker, 2004); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: DIAMOND (Brandenburg, 2005); software used to prepare material for publication: WinGX (Farrugia, 1999).[PdCl2(C20H17P)2] | Z = 1 |
Mr = 753.91 | F(000) = 384 |
Triclinic, P1 | Dx = 1.498 Mg m−3 |
Hall symbol: -P 1 | Mo Kα radiation, λ = 0.71069 Å |
a = 9.9495 (3) Å | Cell parameters from 5189 reflections |
b = 9.9512 (3) Å | θ = 4.6–64.1° |
c = 10.4387 (4) Å | µ = 0.84 mm−1 |
α = 67.683 (2)° | T = 100 K |
β = 86.366 (2)° | Plate, yellow |
γ = 61.979 (2)° | 0.24 × 0.18 × 0.06 mm |
V = 835.62 (5) Å3 |
Bruker APEXII CCD diffractometer | 2723 independent reflections |
Radiation source: sealed tube | 2682 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.030 |
φ and ω scans | θmax = 24.6°, θmin = 2.1° |
Absorption correction: multi-scan (SADABS; Bruker, 2004) | h = −11→8 |
Tmin = 0.837, Tmax = 0.955 | k = −11→9 |
5829 measured reflections | l = −11→12 |
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)] = 0.041 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.105 | H-atom parameters constrained |
S = 1.07 | w = 1/[σ2(Fo2) + (0.0461P)2 + 2.1233P] where P = (Fo2 + 2Fc2)/3 |
2723 reflections | (Δ/σ)max < 0.001 |
205 parameters | Δρmax = 1.66 e Å−3 |
0 restraints | Δρmin = −0.75 e Å−3 |
[PdCl2(C20H17P)2] | γ = 61.979 (2)° |
Mr = 753.91 | V = 835.62 (5) Å3 |
Triclinic, P1 | Z = 1 |
a = 9.9495 (3) Å | Mo Kα radiation |
b = 9.9512 (3) Å | µ = 0.84 mm−1 |
c = 10.4387 (4) Å | T = 100 K |
α = 67.683 (2)° | 0.24 × 0.18 × 0.06 mm |
β = 86.366 (2)° |
Bruker APEXII CCD diffractometer | 2723 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2004) | 2682 reflections with I > 2σ(I) |
Tmin = 0.837, Tmax = 0.955 | Rint = 0.030 |
5829 measured reflections |
R[F2 > 2σ(F2)] = 0.041 | 0 restraints |
wR(F2) = 0.105 | H-atom parameters constrained |
S = 1.07 | Δρmax = 1.66 e Å−3 |
2723 reflections | Δρmin = −0.75 e Å−3 |
205 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 | Occ. (<1) | |
C11 | 0.8766 (3) | 0.2614 (4) | 0.6548 (3) | 0.0283 (6) | |
C12 | 0.8919 (4) | 0.1305 (4) | 0.6246 (3) | 0.0364 (7) | |
H12 | 0.96 | 0.0217 | 0.683 | 0.044* | |
C13 | 0.8047 (4) | 0.1631 (5) | 0.5062 (4) | 0.0441 (9) | |
H13 | 0.8175 | 0.0753 | 0.4853 | 0.053* | |
C14 | 0.6994 (4) | 0.3238 (5) | 0.4194 (3) | 0.0468 (9) | |
C15 | 0.6826 (4) | 0.4504 (5) | 0.4536 (3) | 0.0459 (9) | |
H15 | 0.6107 | 0.5589 | 0.3981 | 0.055* | |
C16 | 0.7708 (4) | 0.4203 (4) | 0.5696 (3) | 0.0355 (7) | |
H16 | 0.7579 | 0.5087 | 0.5897 | 0.043* | |
C17 | 0.5932 (8) | 0.3815 (11) | 0.2904 (8) | 0.0354 (17) | 0.696 (15) |
H17 | 0.5121 | 0.4896 | 0.2551 | 0.042* | 0.696 (15) |
C18 | 0.6107 (6) | 0.2857 (8) | 0.2271 (6) | 0.046 (2) | 0.696 (15) |
H18A | 0.6911 | 0.1771 | 0.2609 | 0.056* | 0.696 (15) |
H18B | 0.543 | 0.3255 | 0.148 | 0.056* | 0.696 (15) |
C19 | 0.6584 (19) | 0.292 (2) | 0.3018 (15) | 0.034 (4) | 0.304 (15) |
H19 | 0.6993 | 0.1868 | 0.3024 | 0.04* | 0.304 (15) |
C20 | 0.5616 (16) | 0.424 (2) | 0.200 (2) | 0.050 (5) | 0.304 (15) |
H20A | 0.5235 | 0.5275 | 0.2037 | 0.06* | 0.304 (15) |
H20B | 0.5298 | 0.416 | 0.1226 | 0.06* | 0.304 (15) |
C21 | 1.1852 (3) | 0.1752 (4) | 0.7390 (3) | 0.0278 (6) | |
C22 | 1.2089 (3) | 0.1773 (4) | 0.6054 (3) | 0.0312 (6) | |
H22 | 1.1285 | 0.2002 | 0.5456 | 0.037* | |
C23 | 1.3508 (4) | 0.1456 (4) | 0.5606 (3) | 0.0364 (7) | |
H23 | 1.3655 | 0.147 | 0.4713 | 0.044* | |
C24 | 1.4702 (4) | 0.1119 (4) | 0.6490 (4) | 0.0414 (8) | |
H24 | 1.5659 | 0.0893 | 0.6197 | 0.05* | |
C25 | 1.4476 (4) | 0.1118 (4) | 0.7813 (3) | 0.0380 (7) | |
H25 | 1.5278 | 0.0907 | 0.8401 | 0.046* | |
C26 | 1.3067 (3) | 0.1429 (4) | 0.8262 (3) | 0.0325 (6) | |
H26 | 1.2926 | 0.1423 | 0.9153 | 0.039* | |
C31 | 0.9371 (3) | 0.4102 (4) | 0.8217 (3) | 0.0282 (6) | |
C32 | 0.9929 (4) | 0.5164 (4) | 0.7448 (3) | 0.0331 (7) | |
H32 | 1.063 | 0.4878 | 0.6839 | 0.04* | |
C33 | 0.9444 (4) | 0.6660 (4) | 0.7584 (3) | 0.0379 (7) | |
H33 | 0.9824 | 0.7368 | 0.707 | 0.045* | |
C34 | 0.8397 (4) | 0.7090 (4) | 0.8483 (3) | 0.0376 (7) | |
H34 | 0.8065 | 0.8091 | 0.857 | 0.045* | |
C35 | 0.7847 (4) | 0.6031 (4) | 0.9250 (4) | 0.0404 (8) | |
H35 | 0.7141 | 0.6326 | 0.9852 | 0.048* | |
C36 | 0.8330 (3) | 0.4529 (4) | 0.9140 (3) | 0.0349 (7) | |
H36 | 0.7965 | 0.3814 | 0.9674 | 0.042* | |
P1 | 1.00121 (8) | 0.21439 (9) | 0.80338 (7) | 0.02397 (18) | |
Cl1 | 0.73685 (8) | 0.14865 (9) | 0.94644 (8) | 0.03426 (19) | |
Pd | 1 | 0 | 1 | 0.02362 (13) |
U11 | U22 | U33 | U12 | U13 | U23 | |
C11 | 0.0233 (14) | 0.0424 (16) | 0.0255 (14) | −0.0213 (13) | 0.0092 (11) | −0.0135 (13) |
C12 | 0.0306 (16) | 0.0466 (18) | 0.0424 (17) | −0.0231 (15) | 0.0150 (13) | −0.0234 (15) |
C13 | 0.0453 (19) | 0.077 (3) | 0.048 (2) | −0.046 (2) | 0.0287 (16) | −0.044 (2) |
C14 | 0.050 (2) | 0.083 (3) | 0.0261 (16) | −0.052 (2) | 0.0107 (15) | −0.0155 (17) |
C15 | 0.047 (2) | 0.060 (2) | 0.0327 (17) | −0.0375 (18) | −0.0034 (15) | −0.0030 (16) |
C16 | 0.0333 (16) | 0.0426 (17) | 0.0327 (16) | −0.0243 (15) | 0.0012 (13) | −0.0088 (14) |
C17 | 0.029 (3) | 0.041 (4) | 0.033 (4) | −0.016 (3) | 0.004 (3) | −0.013 (3) |
C18 | 0.047 (3) | 0.050 (4) | 0.038 (3) | −0.020 (3) | −0.006 (2) | −0.015 (3) |
C19 | 0.031 (8) | 0.039 (8) | 0.036 (8) | −0.016 (7) | 0.006 (6) | −0.022 (6) |
C20 | 0.052 (8) | 0.064 (11) | 0.030 (9) | −0.026 (7) | −0.002 (6) | −0.016 (8) |
C21 | 0.0251 (14) | 0.0305 (14) | 0.0279 (14) | −0.0158 (12) | 0.0084 (11) | −0.0094 (12) |
C22 | 0.0293 (15) | 0.0342 (15) | 0.0303 (15) | −0.0178 (13) | 0.0053 (12) | −0.0099 (12) |
C23 | 0.0334 (17) | 0.0416 (17) | 0.0333 (16) | −0.0195 (14) | 0.0155 (13) | −0.0139 (14) |
C24 | 0.0271 (16) | 0.0444 (18) | 0.049 (2) | −0.0192 (15) | 0.0156 (14) | −0.0136 (16) |
C25 | 0.0285 (16) | 0.0414 (17) | 0.0406 (18) | −0.0198 (14) | 0.0000 (13) | −0.0083 (14) |
C26 | 0.0316 (16) | 0.0376 (16) | 0.0283 (15) | −0.0197 (13) | 0.0054 (12) | −0.0095 (13) |
C31 | 0.0245 (14) | 0.0349 (15) | 0.0241 (14) | −0.0131 (12) | 0.0018 (11) | −0.0119 (12) |
C32 | 0.0373 (16) | 0.0405 (17) | 0.0244 (14) | −0.0201 (14) | 0.0083 (12) | −0.0144 (13) |
C33 | 0.0447 (18) | 0.0395 (17) | 0.0318 (16) | −0.0231 (15) | 0.0062 (14) | −0.0129 (14) |
C34 | 0.0360 (17) | 0.0398 (17) | 0.0356 (17) | −0.0136 (14) | −0.0012 (13) | −0.0186 (14) |
C35 | 0.0307 (16) | 0.056 (2) | 0.0425 (18) | −0.0186 (15) | 0.0106 (14) | −0.0306 (16) |
C36 | 0.0314 (16) | 0.0473 (18) | 0.0334 (16) | −0.0226 (14) | 0.0095 (12) | −0.0194 (14) |
P1 | 0.0213 (4) | 0.0307 (4) | 0.0205 (3) | −0.0149 (3) | 0.0058 (3) | −0.0081 (3) |
Cl1 | 0.0207 (3) | 0.0380 (4) | 0.0347 (4) | −0.0152 (3) | 0.0042 (3) | −0.0039 (3) |
Pd | 0.01846 (18) | 0.02981 (19) | 0.02028 (18) | −0.01383 (14) | 0.00523 (11) | −0.00526 (13) |
C11—C16 | 1.373 (4) | C22—H22 | 0.93 |
C11—C12 | 1.391 (4) | C23—C24 | 1.380 (5) |
C11—P1 | 1.820 (3) | C23—H23 | 0.93 |
C12—C13 | 1.397 (5) | C24—C25 | 1.385 (5) |
C12—H12 | 0.93 | C24—H24 | 0.93 |
C13—C14 | 1.387 (6) | C25—C26 | 1.378 (4) |
C13—H13 | 0.93 | C25—H25 | 0.93 |
C14—C15 | 1.371 (5) | C26—H26 | 0.93 |
C14—C19 | 1.498 (14) | C31—C32 | 1.385 (4) |
C14—C17 | 1.511 (8) | C31—C36 | 1.398 (4) |
C15—C16 | 1.392 (4) | C31—P1 | 1.827 (3) |
C15—H15 | 0.93 | C32—C33 | 1.395 (4) |
C16—H16 | 0.93 | C32—H32 | 0.93 |
C17—C18 | 1.298 (12) | C33—C34 | 1.382 (5) |
C17—H17 | 0.93 | C33—H33 | 0.93 |
C18—H18A | 0.93 | C34—C35 | 1.377 (5) |
C18—H18B | 0.93 | C34—H34 | 0.93 |
C19—C20 | 1.29 (3) | C35—C36 | 1.388 (5) |
C19—H19 | 0.93 | C35—H35 | 0.93 |
C20—H20A | 0.93 | C36—H36 | 0.93 |
C20—H20B | 0.93 | P1—Pd | 2.3366 (7) |
C21—C22 | 1.393 (4) | Cl1—Pd | 2.2966 (7) |
C21—C26 | 1.395 (4) | Pd—Cl1i | 2.2966 (7) |
C21—P1 | 1.824 (3) | Pd—P1i | 2.3366 (7) |
C22—C23 | 1.386 (4) | ||
C16—C11—C12 | 118.8 (3) | C22—C23—H23 | 120.1 |
C16—C11—P1 | 122.8 (2) | C23—C24—C25 | 120.1 (3) |
C12—C11—P1 | 118.4 (2) | C23—C24—H24 | 120 |
C11—C12—C13 | 119.8 (3) | C25—C24—H24 | 120 |
C11—C12—H12 | 120.1 | C26—C25—C24 | 120.3 (3) |
C13—C12—H12 | 120.1 | C26—C25—H25 | 119.9 |
C14—C13—C12 | 121.3 (3) | C24—C25—H25 | 119.9 |
C14—C13—H13 | 119.4 | C25—C26—C21 | 120.5 (3) |
C12—C13—H13 | 119.4 | C25—C26—H26 | 119.8 |
C15—C14—C13 | 117.9 (3) | C21—C26—H26 | 119.8 |
C15—C14—C19 | 141.5 (8) | C32—C31—C36 | 119.7 (3) |
C13—C14—C19 | 99.8 (8) | C32—C31—P1 | 120.0 (2) |
C15—C14—C17 | 113.6 (5) | C36—C31—P1 | 120.3 (2) |
C13—C14—C17 | 128.5 (4) | C31—C32—C33 | 120.2 (3) |
C14—C15—C16 | 121.5 (3) | C31—C32—H32 | 119.9 |
C14—C15—H15 | 119.3 | C33—C32—H32 | 119.9 |
C16—C15—H15 | 119.3 | C34—C33—C32 | 120.0 (3) |
C11—C16—C15 | 120.7 (3) | C34—C33—H33 | 120 |
C11—C16—H16 | 119.6 | C32—C33—H33 | 120 |
C15—C16—H16 | 119.6 | C35—C34—C33 | 119.8 (3) |
C18—C17—C14 | 122.4 (7) | C35—C34—H34 | 120.1 |
C18—C17—H17 | 118.8 | C33—C34—H34 | 120.1 |
C14—C17—H17 | 118.8 | C34—C35—C36 | 121.1 (3) |
C17—C18—H18A | 120 | C34—C35—H35 | 119.5 |
C17—C18—H18B | 120 | C36—C35—H35 | 119.5 |
H18A—C18—H18B | 120 | C35—C36—C31 | 119.3 (3) |
C20—C19—C14 | 114.3 (15) | C35—C36—H36 | 120.4 |
C20—C19—H19 | 122.8 | C31—C36—H36 | 120.4 |
C14—C19—H19 | 122.8 | C11—P1—C21 | 103.88 (13) |
C19—C20—H20A | 120 | C11—P1—C31 | 106.35 (13) |
C19—C20—H20B | 120 | C21—P1—C31 | 102.82 (13) |
H20A—C20—H20B | 120 | C11—P1—Pd | 110.15 (9) |
C22—C21—C26 | 118.6 (3) | C21—P1—Pd | 116.81 (10) |
C22—C21—P1 | 122.5 (2) | C31—P1—Pd | 115.66 (9) |
C26—C21—P1 | 118.9 (2) | Cl1—Pd—Cl1i | 180 |
C23—C22—C21 | 120.8 (3) | Cl1—Pd—P1 | 85.83 (2) |
C23—C22—H22 | 119.6 | Cl1i—Pd—P1 | 94.17 (2) |
C21—C22—H22 | 119.6 | Cl1—Pd—P1i | 94.17 (2) |
C24—C23—C22 | 119.7 (3) | Cl1i—Pd—P1i | 85.83 (2) |
C24—C23—H23 | 120.1 | P1—Pd—P1i | 180 |
C16—C11—C12—C13 | 2.5 (4) | C32—C33—C34—C35 | 0.5 (5) |
P1—C11—C12—C13 | −176.1 (2) | C33—C34—C35—C36 | 0.2 (5) |
C11—C12—C13—C14 | −1.7 (4) | C34—C35—C36—C31 | −1.1 (5) |
C12—C13—C14—C15 | −0.4 (5) | C32—C31—C36—C35 | 1.3 (4) |
C12—C13—C14—C19 | 171.6 (5) | P1—C31—C36—C35 | −179.3 (2) |
C12—C13—C14—C17 | −178.2 (4) | C16—C11—P1—C21 | −101.2 (3) |
C13—C14—C15—C16 | 1.6 (5) | C12—C11—P1—C21 | 77.3 (2) |
C19—C14—C15—C16 | −165.6 (9) | C16—C11—P1—C31 | 6.9 (3) |
C17—C14—C15—C16 | 179.8 (4) | C12—C11—P1—C31 | −174.6 (2) |
C12—C11—C16—C15 | −1.3 (4) | C16—C11—P1—Pd | 132.9 (2) |
P1—C11—C16—C15 | 177.2 (2) | C12—C11—P1—Pd | −48.6 (2) |
C14—C15—C16—C11 | −0.8 (5) | C22—C21—P1—C11 | −2.7 (3) |
C15—C14—C17—C18 | 167.1 (5) | C26—C21—P1—C11 | 176.8 (2) |
C13—C14—C17—C18 | −15.0 (7) | C22—C21—P1—C31 | −113.5 (3) |
C19—C14—C17—C18 | 5.3 (9) | C26—C21—P1—C31 | 66.1 (3) |
C15—C14—C19—C20 | −9.9 (16) | C22—C21—P1—Pd | 118.8 (2) |
C13—C14—C19—C20 | −178.5 (10) | C26—C21—P1—Pd | −61.7 (3) |
C17—C14—C19—C20 | 17.6 (9) | C32—C31—P1—C11 | −85.8 (2) |
C26—C21—C22—C23 | 0.9 (4) | C36—C31—P1—C11 | 94.9 (2) |
P1—C21—C22—C23 | −179.5 (2) | C32—C31—P1—C21 | 23.1 (3) |
C21—C22—C23—C24 | −0.2 (5) | C36—C31—P1—C21 | −156.3 (2) |
C22—C23—C24—C25 | −0.8 (5) | C32—C31—P1—Pd | 151.6 (2) |
C23—C24—C25—C26 | 0.9 (5) | C36—C31—P1—Pd | −27.8 (3) |
C24—C25—C26—C21 | −0.2 (5) | C11—P1—Pd—Cl1 | −48.46 (10) |
C22—C21—C26—C25 | −0.7 (4) | C21—P1—Pd—Cl1 | −166.62 (11) |
P1—C21—C26—C25 | 179.7 (2) | C31—P1—Pd—Cl1 | 72.14 (10) |
C36—C31—C32—C33 | −0.6 (4) | C11—P1—Pd—Cl1i | 131.54 (10) |
P1—C31—C32—C33 | 180.0 (2) | C21—P1—Pd—Cl1i | 13.38 (11) |
C31—C32—C33—C34 | −0.3 (5) | C31—P1—Pd—Cl1i | −107.86 (10) |
Symmetry code: (i) −x+2, −y, −z+2. |
Experimental details
Crystal data | |
Chemical formula | [PdCl2(C20H17P)2] |
Mr | 753.91 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 100 |
a, b, c (Å) | 9.9495 (3), 9.9512 (3), 10.4387 (4) |
α, β, γ (°) | 67.683 (2), 86.366 (2), 61.979 (2) |
V (Å3) | 835.62 (5) |
Z | 1 |
Radiation type | Mo Kα |
µ (mm−1) | 0.84 |
Crystal size (mm) | 0.24 × 0.18 × 0.06 |
Data collection | |
Diffractometer | Bruker APEXII CCD |
Absorption correction | Multi-scan (SADABS; Bruker, 2004) |
Tmin, Tmax | 0.837, 0.955 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 5829, 2723, 2682 |
Rint | 0.030 |
(sin θ/λ)max (Å−1) | 0.586 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.041, 0.105, 1.07 |
No. of reflections | 2723 |
No. of parameters | 205 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 1.66, −0.75 |
Computer programs: APEX2 (Bruker, 2005), SAINT-Plus (Bruker, 2004), SAINT-Plus and XPREP (Bruker, 2004), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), DIAMOND (Brandenburg, 2005), WinGX (Farrugia, 1999).
Acknowledgements
Financial assistance from the South African National Research Foundation (SA NRF), the Research Fund of the University of Johannesburg and SASOL is gratefully acknowledged. Mr S. Enus is acknowledged for the synthesis of this compound.
References
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Transition metal complexes containing phosphine, arsine and stibine ligands are widely being investigated in various fields of organometallic chemistry (Spessard & Miessler, 1996). As part of a systematic investigation involving complexes with the general formula trans-[MX2(L)2] (M = Pt or Pd; X = halogen, Me, Ph; L = Group 15 donor ligand), crystals of the title compound, were obtained.
[PdCl2(L)2] (L = tertiary phosphine, arsine or stibine) complexes can conveniently be prepared by the substitution of 1,5-cyclooctadiene (COD) from [PdCl2(COD)]. The title compound, trans-[PdCl2{P(4—H2C=CHC6H4)Ph2}2], crystallizes in the triclinic spacegroup P1, with the Pd atom on a center of symmetry and each pair of equivalent ligands in a mutually trans orientation. The geometry is, therefore, slightly distorted square planar and the Pd atom is not elevated out of the coordinating atom plane. All angles in the coordination polyhedron are close to the ideal value of 90°, with P—Pd—Cl = 85.83 (4)° and P—Pd—Cli = 94.17 (4)°. As required by the crystallographic symmetry, the P—Pd—Pi and Cl—Pd—Cli angles are 180°. No weak intermolecular interactions were observed.
The title compound compares well with other closely related PdII complexes from the literature containing two chloro and two tertiary phosphine ligands in a trans geometry (Muller & Meijboom, 2010a; 2010b). The title compound, having a Pd—Cl bond length of 2.2969 (14) Å and a Pd—P bond length of 2.3367 (12) Å, fits well into the typical range for complexes of this kind. Notably the title compound did not crystallize as a solvated complex; these type of PdII complexes have a tendency to crystallize as solvates (Meijboom & Omondi, 2011).
Large thermal vibrations on the periphery of the molecule results in a poorly defined C=C bond length. Disordered modelling resulted in an unstable refinement.