Organophosphines in organoplatinum complexes: structural aspects of PtPCX 2 (X = OL, NL, Cl, SL, SeL, SiL, Br or I) derivatives
In this review are classified and analyzed the structural parameters of eighty monomeric organoplatinum complexes with inner coordination spheres of PtPCX2 (X = OL, NL, Cl, SL, SeL, SiL, Br or I). These complexes crystallized in four crystal systems: cubic, orthorhombic, monoclinic and triclinic. Distorted square planar environments about the Pt(II) atoms are built up from monodentate, homobidentate, heterobidentate and heterotridentate donor ligands. The chelating ligands create wide varieties of metallocycles. These are discussed in terms of the coordination about the platinum atom, and correlations are drawn between donor atoms, bond lengths and interbond angles, with particular attention to any trans-influence. There are complexes with cis- as well as trans-configurations, but the former by far prevail. The Pt–L bonds in the complexes with cis-configuration appear to be more polar and presumably weaker than those in their trans-partners.
Publisher URL: https://link.springer.com/article/10.1007/s11243-017-0173-5
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