Substitution and Isomerisation Reactions at Platinum(II) involving Halide, Tertiary Phosphine, Carbonyl, and Isonitrile Ligands

DOI: 10.1039/DT9820002261

Source and publish data:

Journal of the Chemical Society, Dalton Transactions p. 2261 - 2264 (1982)

Update date:2022-08-05

Topics: Carbonyl Ligands Tertiary Phosphine Ligands Isonitrile Ligands

Authors:

Cross, Ronald J.

Phillips, Ian G.

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Article abstract of DOI:10.1039/DT9820002261

Carbon monoxide catalyses trans to cis isomerisations of (L = tertiary phosphine) in chloroform solution.The process involves formation of five-co-ordinate intermediates from which halide or tertiary phosphine can be eliminated, giving trans-(1+) or cis- respectively.Structure changes appear to be by pseudo-rotations rather than by consecutive displacements.A number of isonitrile complexes undergo similar reactions.Halide-bridged cations (2+) formed by halide extraction from cis- by Ag(1+) enter rapid (n.m.r. time-scale) exchange processes with the latter complexes at ambient temperatures.Halide elimination from cis- by solvent chloroform appears to initiate the process.The trans isomers do not participate in the exchange.

Full text of DOI:10.1039/DT9820002261

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