Reactions of low-valent metal complexes with fluorocarbons. Part XIV. Hexafluoroisopropylideneamine-nickel and -platinum complexes

摘要: Ethylenebis(triphenylphosphine)nickel reacts with the imine hexafluoroisopropylideneamine or N-methylamine to form stable crystalline complexes [Ni(Ph3P)2{(CF3)2CNR}](R = H Me). Reaction of bis(cycloocta-1,5-diene)nickel N-methylhexafluoroisopropylideneamine affords [Ni(1,5-C8H12){(CF3)2CNMe}], which on treatment triphenylphosphine, methyldiphenylphosphine, bipyridyl, 1,2-bis(dimethylphosphino)-ethane, gives complexes, cyclo-octa-1,5-diene being displaced. In contrast, trimethyl phosphite displaces both diene and from [Ni(1,5-C8H12){(CF3)2CNMe}].The analogous platinum [Pt(Ph3P)2{(CF3)2CNR}](R Me) are obtained by reaction trans-stilbenebis(triphenylphosphine)platinum corresponding imine. Trifluoroacetic acid [Pt(Ph3P)2-{(CF3)2CNH}] platinum(IV) complex [Pt(Ph3P)2{(CF3)2CNH}(CF3CO2)2], whereas a similar N-methyl analogue [Pt(Ph3P)2(H){(CF3)2CNMe}(CF3CO2)]. Treatment [Pt(Ph3P)2{(CF3)2CNH}] hexafluoroacetone leads ring-expansion formation five-membered heterocyclic ring compound. Hexafluoroacetone [Pt(Ph3P)2{(CF3)2-CNMe}] give known [Pt(Ph3P)2{(CF3)2CO}].