title: Weak C-H···Cl-Pd interactions toward conformational polymorphism in trans-dichloridobis(triphenylphosphane)palladium(II).
abstract: A new triclinic polymorph of the title compound, [PdCl(2)(C(18)H(15)P)(2)], has two independent molecules in the unit cell, with the Pd atoms located on inversion centres. One molecule has an eclipsed conformation, whereas the second molecule adopts a gauche conformation. The molecules with a gauche conformation are involved in weak intermolecular C-H···Cl-Pd interactions with symmetry-related molecules. It is suggested that C-H···Cl-Pd interactions are mainly responsible for the existence of conformational differences, which contribute to the polymorph formation. In the crystal, there are layers of eclipsed and gauche molecules separated by normal van der Waals interactions.
authors: Departamento de Química, Universidade Federal de São Carlos-UFSCar, Rodovia Washington Luiz, KM 235 CP 676, CEP 13561-901, São Carlos-SP, Brazil. rodrigocorrea@ufscar.br
authors: Rodrigo S
authors: RS
authors: Corrêa
authors: Angélica E
authors: AE
authors: Graminha
authors: Javier
authors: J
authors: Ellena
authors: Alzir A
authors: AA
authors: Batista
mesh_terms: D018360:Crystallography, X-Ray; D006860:Hydrogen Bonding; D008968:Molecular Conformation; D015394:Molecular Structure; D009942:Organometallic Compounds / Q000737:chemistry*; D010165:Palladium / Q000737:chemistry*
chemical_list: D009942:Organometallic Compounds; C562169:trans-dichloridobis(triphenylphosphane)palladium(II); D010165:Palladium