Characteristic Features of Platinum Stereochemistry in the Structures of Organometallic Compounds

The Voronoi-Dirichlet polyhedra (VDP) and the method of intersecting spheres were used to carry out crystal chemical analysis of 85 compounds containing 124 PtC_n or PtC_nPt_m coordination polyhedra in which the Pt-C and Pt-Pt bond lengths vary in the 1.82-2.43 and 2.58-2.98 Å ranges. The main stereochemical features of platinum are discussed depending on the nature (C or Pt) and the number (n varying from 1 to 10; m varying from 0 to 9) of atoms in the first coordination sphere. It is shown that the VDP parameters can be used to identify the aghostic Pt···H-C interactions in the crystal structure.