title: Constrained-geometry aluminum complexes with eta5;eta1-coordination: syntheses, structures, and theoretical studies of dicarbollylamino aluminum(III) complexes.
abstract: A series of constrained geometry complexes of formula [(eta5-RC2B9H10)CH2(eta1-NMe2)]Al(Me) (R = H, 2a; Me, 2b) was prepared in high yields from the reaction of dicarbollylamine with trimethylaluminum. These complexes showed a unique constrained geometry structure with a central aluminum atom having eta5;eta1-coordination. DFT calculations further elaborate the electronic effect of an amine sidearm on the bonding capability of dicarbollyl ligand with an aluminum atom. It has been noted that dicarbollylamines are effective ancillary ligands for the production of novel constrained geometry complexes of aluminum.
authors.affiliation: Department of Chemistry, Korea University, Chochiwon, Chung-nam 339-700, South Korea.
authors.forename: Ki-Chul
authors.initials: KC
authors.lastname: Son
authors.forename: Young-Joo
authors.initials: YJ
authors.lastname: Lee
authors.forename: Minserk
authors.initials: M
authors.lastname: Cheong
authors.forename: Jaejung
authors.initials: J
authors.lastname: Ko
authors.forename: Sang Ook
authors.initials: SO
authors.lastname: Kang