Crystal and molecular structures of hexafluoroacetone and hexafluoroisopropylideneamine complexes of nickel

Abstract

Crystal structure determinations on (Ph₃P)₂[graphic omitted] and (Bu^tNC)₂N[graphic omitted] have established the geometries of two classes of compounds formed by co-ordination of fluorocarbon molecules to transition metals; in the first case a symmetrical three-membered ring is formed by co-ordination of one molecule of (CF₃)₂CO and in the second case a five-membered ring is formed by co-ordination of one molecule of (CF₃)₂CO and one molecule of (CF₃)₂CNH.