Milan Melník, Peter Mikuš
February 14, 2019
In this review, we classify and analyze the structural data of more than 80 monomeric platinum coordination complexes with an inner coordination sphere of PtP 4 in which only organophosphines are involved. On the basis of the coordination mode of respective organophosphines, these complexes can be divided into six subgroups: Pt(PL) 4 , Pt(PL) 2 (PL′) 2 , Pt(η 2 -P 2 L)(PL) 2 , Pt(η 2 -P 2 L) 2 , Pt(η 2 -P 2 L)(η 2 -P 2 L′) 2 , and Pt(η 4 -P 4 L). The chelating ligands forming wide varieties of metallocycles: (P=P), (PNP), (PCP), (PC 2 P), (PP 2 P), (PC 2 NP), (PNCNP), (PNPNP), (POHOP), (POBOP), (PCNCP), (PC 3 P), (PC 4 P), and (PC 2 OC 2 P). The effects of both steric and electronic factors reflect on the values of P-Pt-P chelate angles. The total mean values of Pt-P elongate in the order: 2.289 Å (tetradentate)<2.306 Å (monodentate)<2.320 Å (bidentate). The same order shows the respective covalent bond weaknesses.