SYNTHESIS OF SOME BIS(TRIPHENYLPHOSPHINE)(ETHYNYLFERROCENYL) PLATINUM(II) COMPLEXES - MOLECULAR-STRUCTURE OF [PTH(C-EQUIVALENT-TO-C-C5H4FEC5H5)(PPH3)2]

Substituted acetylidoplatinum(II) complexes trans-[PtX(C=C-C5H4FeC5H5) (PPh3)2] (X = H, Cl, C=CPh or C=C-C5H4FeC5H5) have been prepared. Cont rolled basicity of the reaction solutions yields the different complex es. A single-crystal X-ray diffraction study of trans-[PtH(C=C-C5H4FeC 5H5)(PPh3)2] indicates an alternating alignment of the ethynyl ligands between two centrosymmetric platinum atoms, resulting in the formatio n of a pseudo-polymeric-structure.