The Two Faces of Tetramethylcyclam in Iron Chemistry: Distinct Fe-O-M Complexes Derived from [Fe^IV(O_anti/syn)(TMC)]²⁺ Isomers.

ABSTRACT: Tetramethylcyclam (TMC, 1,4,8,11-tetramethyl-1,4,8,11-tetraazacyclotetradecane) exhibits two faces in supporting an oxoiron(IV) moiety, as exemplified by the prototypical [(TMC)Fe^IV(O_anti)(NCCH₃)](OTf)₂, where anti indicates that the O atom is located on the face opposite all four methyl groups, and the recently reported syn isomer [(TMC)Fe^IV(O_syn)(OTf)](OTf). The ability to access two isomers of [(TMC)Fe^IV(O_anti/syn)] raises the fundamental question of how ligand topology can affect the properties of the metal center. Previously, we have reported the formation of [(CH₃CN)(TMC)Fe^III-O_anti-Cr^III(OTf)₄(NCCH₃)] (1) by inner-sphere electron t

SUBMITTER: Zhou A 

PROVIDER: S-EPMC5293164 | biostudies-literature | 2017 Jan

REPOSITORIES: biostudies-literature