title: Synthesis and structural characterization of bis(2-oxoimidazolyl)hydroborato complexes: a new class of bidentate oxygen-donor ligands.
abstract: A new class of bidentate ligands that feature oxygen donors, namely, the bis(2-oxo-1-tert-butylimidazolyl)hydroborato and bis(2-oxo-1-methylbenzimidazolyl)hydroborato ligands, [Bo(Bu(t))] and [Bo(MeBenz)], have been synthesized via the reactions of MBH4 with 2 equiv of the respective 2-imidazolone. Chelation of [Bo(Bu(t))] and [Bo(MeBenz)] to a metal center results in a flexible eight-membered ring that is capable of adopting a "boatlike" conformation that allows for secondary M···H-B interactions.
authors.affiliation: Department of Chemistry, Columbia University , New York, New York 10027, United States.
authors.forename: Ahmed
authors.initials: A
authors.lastname: Al-Harbi
authors.forename: Yi
authors.initials: Y
authors.lastname: Rong
authors.forename: Gerard
authors.initials: G
authors.lastname: Parkin