1251472-45-3Relevant articles and documents
Reactions of five-coordinate platinum(IV) complexes with molecular oxygen
Scheuermann, Margaret L.,Luedtke, Avery T.,Hanson, Susan K.,Fekl, Ulrich,Kaminsky, Werner,Goldberg, Karen I.
, p. 4752 - 4758 (2013)
The reactions of various five-coordinate Pt(IV) complexes with molecular oxygen have been studied. In arene solution, the complexes ( tBuMe2nacnac0)PtMe3 (1; tBuMe2nacnac- = [((4-tBu-2,6-Me2C 6H2)NC(CH3))2CH]-), (Me3Me-nacnac)PtMe3 (2; Me3Me-nacnac - = [((2,4,6-Me3C6H2)NC(CH 3))2CCH3]-), and ( tBu2PyPyr)PtMe3 (3; tBu2PyPyr- = 3,5-di-tert-butyl-2-(2-pyridyl)pyrrolide) reacted immediately with oxygen to form peroxo species in which two oxygen atoms bridge between the metal center and a carbon atom in the ligand backbone. In contrast, no reaction between (iPr2AnIm)PtMe3 (4a; iPr2AnIm- = [o-C6H4-{N(C6H3iPr 2)}(CHi - NC6H3iPr 2)]-) or (Me3AnIm)PtMe3 (4b; Me3AnIm- = [o-C6H4-{N(C 6H2Me3)}(CHi - NC6H 2Me3)]0) and oxygen was observed. As activation of oxygen by five-coordinate Pt(IV) species was found to involve cooperation between the metal center and the ligand, the ability of the ligand to participate in the oxygen binding appears to be a vital component. Oxygen atom transfer reactions of the novel peroxo species are also presented.
