title: 1,4,7-Triazacyclononane ligands bearing tertiary alkyl nitrogen substituents.
abstract: The first synthesis of 1,4,7-tri-tert-butyl-1,4,7-triazacyclononane ((t)Bu3tacn) and its adamantyl analog Ad3tacn are described. Cr(II), Mn(II), Fe(II), Co(II), Ni(II), and Cu(I) compounds of (t)Bu3tacn are reported: the steric properties of this ligand enforce four-coordinate geometries except in the case of five-coordinate Cr(II), enabling design of pseudotetrahedral compounds bearing this tridentate redox-inert ancillary ligand.
authors.affiliation: Department of Chemistry, Emory University , Atlanta, Georgia 30322, United States.
authors.forename: Arumugam
authors.initials: A
authors.lastname: Thangavel
authors.forename: Marika
authors.initials: M
authors.lastname: Wieliczko
authors.forename: John
authors.initials: J
authors.lastname: Bacsa
authors.forename: Christopher C
authors.initials: CC
authors.lastname: Scarborough