title: New structural features in heavy alkaline earth-metal chemistry--molecular heterobimetallic group 1, Ba complexes.
abstract: The preparation of heterobimetallic complexes consisting of alkali and heavy alkaline earth metals remains a challenge due to limited available synthetic strategies. Here we present a new class of group 1, Ba compounds of the type [M(n){Ba(Odpp)(2+n)}] (M=Na(n=1) (1), K(n=1) (2), Cs(n=1) (3), Li(n=2) (4); HOdpp=2,6-diphenylphenol) and the Lewis base adducts [Li(2)(thf)(2){Ba(Odpp)(4)}]PhMe (5) and [K{Ba(Odpp)(3)(diglyme)}] (6) (diglyme=[bis(2-methoxy)ethyl ether]) as the first representatives of heterobimetallic group 1, Ba species of low nuclearity. The compounds display a significant degree of metal-arene interaction, believed to be a key factor in stabilizing these highly reactive species. Obtained by solid-state direct metalation, the target compounds are available without further work-up.
authors.affiliation: Department of Chemistry, 1-014 Center for Science and Technology, Syracuse University, Syracuse, NY 13244-4100, USA. kruhland@syr.edu
authors.forename: Maria Felisa
authors.initials: MF
authors.lastname: Zuniga
authors.forename: Glen B
authors.initials: GB
authors.lastname: Deacon
authors.forename: Karin
authors.initials: K
authors.lastname: Ruhlandt-Senge