Abstract
Abstract This article covers almost 130 Pt(ii) complexes with an inner coordination sphere of cis-PtP2Cl2. The P-donor ligands are organodiphosphines that create four-, five-, and six-membered metallocyclic rings. There are two types of four-membered rings: PCP and PNCP, and four types of five-membered rings: PC–CP, PC═CP, PNNP, and PCOP. There are wide varieties of the six-membered metallocyclic rings: PC3P (most common), PCNCP, PCSCP, PCSiCP, PNCNP, PCCOP, PCCNP, POPNP, POSiOP, P(CNC)2P, and P(CNC)(CCC)P. The P–Pt–P bite angles open with the size of the metallocyclic rings in the order (total mean values 72.4° [PXP] < 86.4° [PXXP] < 94.0° [PXXNP]). There are complexes that are examples of distortion and ligand isomerism. The structural data are analyzed and discussed.
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