Reversible C-C bond formation at a triply cyclometallated platinum(iv) centre.

ABSTRACT: The oxidation of the tribenzylphosphine derivative of the doubly cylcometallated platinum(ii) complex of diphenylpyridine, 1, with PhICl₂ led, as a first step, to the formation of a highly electrophilic metal centre which attacked the benzyl phosphine to give a triply cyclometallated species as the arenium ion. The highly acidic arenium ion protonated unreacted starting 1, a reaction that could be supressed by the addition of water, and gave the neutral species 2(t). Octahedral complex 2(t) was induced to reductively couple, with two five-membered rings coupling to give square planar complex 5 containing a nine-membered ring. The crystal structure of 5 showed the nine-membered ring to span trans across the square planar metal acco

SUBMITTER: Shaw PA 

PROVIDER: S-EPMC5618794 | biostudies-literature | 2017 Aug

REPOSITORIES: biostudies-literature