Abstract
Abstract In this review are analyzed and classified crystallographic and structural parameters of P(0)P3, Pt(0) P4 and Pt(II)P4 derivatives – distortion isomers. Some of the isomers are differing not only by degree of distortion but also by crystal class. There are three types of organo-phosphines which build up the respective geometry about the platinum atoms. In Pt(0)P3 a distorted trigonal planar geometry is build up by three monodentate PPh3 ligands. In Pt(0)P4 a tetrahedral geometry with various degree of distortion is build up by a pair of homo-bidentate ligands. In Pt(II)P4 isomers a square-planar geometries with various degree of distortion are build up by bidentate-P,P’donor ligands, (except one example of isomers, where a tetradentate is involved). The bidentate-P,P’-donor ligands form: four-(PNP,PCP), five-(PC2P) and six-(PC3P) metallocyclic rings. The tetradentate forms five-(PC2P). There are some cooperative effects between Pt–P bond distances and the metallocyclic rings, and at the same time a distortion of the respective geometry increases.
Highlights
There are three types of organophosphines which build up the respective geometry about the platinum atoms
The chemistry of platinum is important in the arias of catalysis and biochemistry
Isomers can be broadly classis into two major categories, structural and stereoisomers. The former can be divided into coordination, hydrate, ionization, linkage and polymerization sub-categories, and the latter can be divided into geometric, optical, ligand and distortion isomerism
Summary
The chemistry of platinum is important in the arias of catalysis and biochemistry. Classified and analyzed almost 2000 platinum complexes. Stereoselectivity in platinum coordination compounds is very often related to important stereosepecifity of biological systems, catalysis and stereochemical effects in technical processes. Isomers can be broadly classis into two major categories, structural and stereoisomers. The former can be divided into coordination, hydrate, ionization, linkage and polymerization sub-categories, and the latter can be divided into geometric (cis- trans, fac- mer), optical, ligand and distortion isomerism. The huge area of platinum coordination chemistry has been surveyed (Holloway and Melnik, 2002, 2003, 2004a, 2004b, 2005) with over 200 isomeric examples noted. In this review we analyzed and classified structural data for Pt(0)P , Pt(0)P and Pt(II)P derivatives
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