Coordination chemistry of higher oxidation states Part 9 [1]. Nickel(III) complexes of monodentate phosphines and related ligands

Add time:07/31/2019    Source:sciencedirect.com

The known nickel(III) complexes [Ni(PR3)2X3]) (X = Cl, Br) with monodentate phosphines (PMe3, PEt3, PnBu3, PMe2Ph X = Br only) have been reexamined, some being obtaines in a pure state for the first time. New complexes with PMe2Ph, PEt2Ph and PMePh2 are described. Detailed spectroscopic data (IR, UV/Visible and EPR) are reported and assigned for all complexes, leading to the proposal of trans-trigonal bipyramidal structures (D3h. Evidence for the formation in solutions of nickel(III) complexes of P(OMe)3, AsEt3, PCy3 (Cy = cyclohexyl), PPh3 is also given. Factors influencing the stability of these complexes are discussed.

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