Constrained-geometry aluminum complexes with eta5;eta1-coordination: syntheses, structures, and theoretical studies of dicarbollylamino aluminum(III) complexes

Ki-Chul Son; Young-Joo Lee; Minserk Cheong; Jaejung Ko; Sang Ook Kang

doi:10.1021/ja064696t

Constrained-geometry aluminum complexes with eta5;eta1-coordination: syntheses, structures, and theoretical studies of dicarbollylamino aluminum(III) complexes

J Am Chem Soc. 2006 Sep 20;128(37):12086-7. doi: 10.1021/ja064696t.

Authors

Ki-Chul Son¹, Young-Joo Lee, Minserk Cheong, Jaejung Ko, Sang Ook Kang

Affiliation

¹ Department of Chemistry, Korea University, Chochiwon, Chung-nam 339-700, South Korea.

PMID: 16967956
DOI: 10.1021/ja064696t

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.