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  Global Journal of Inorganic Chemistry. Volume 2, Issue 2 (2011) pp. 85-91
  Research Article
A new polymorph of trans-Dichlorobis triphenylphosphine-kP)-palladium(II)
  Manor Trivedia, R. Nagarajana, Nigam P. Rathb,*  
a Department of Chemistry, University of Delhi, Delhi-110007, INDIA
b Department of Chemistry & Biochemistry and Centre for Nanoscience,University of Missouri-St. Louis One University Boulevard, St. Louis, MO 63121-4499, USA

  This study presents a new polymorph of the title compound, trans-[PdC12(PPh3)2] (1) and the extensive network of weak hydrogen-bonding interactions in the solid state of this crystal form. The compound crystallizes in the centrosymmetric space group P?1 with two crystallographically independent molecules per asymmetric unit. In contrast the previously determined polymorphs crystallize in the centrosymmetric space groups P?1, P21/n, Pbca, C2/c and P21/c with one crystallographically independent molecule in the asymmetric units. The geometries of the two molecules of the title compound are very similar with approximately tetrahedral coordination around the central Pd atom and approximate Cs molecular symmetry. The molecules pack in chains parallel to the crystallographic a axis, connected by C-H•••Cl and C-H•••p(phenyl) hydrogen bonds as well as p(phenyl)•p(phenyl) intermolecular interactions.
  Palladium complex; X-ray crystallography; Weak interactions  

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