title: Aluminum hydride cations stabilized by weakly coordinating carbaalanates.
abstract: The reactions of t-BuCCLi with a mixture of AlH(3).NMe(3) and ClAlH(2).NMe(3) in boiling toluene with the addition of [t-BuCH(2)(Bzl)NMe(2)]Cl, or a bulky beta-diketimine instead, and [n-Bu(4)N]Cl led to the carbaalanates [H(2)Al(NMe(3))(2)](2)[(AlH)(8)(CCH(2)t-Bu)(6)], 3, and [n-Bu(4)N](2)[(AlH)(8)(CCH(2)t-Bu)(6)], 4, respectively. The reaction of Me(3)N.Al(CCt-Bu)(3) 5 and AlH(3).NMe(3) in boiling toluene yielded [H(n-Bu)Al(NMe(3))(2)][(AlH)(7)(AlNMe(3))(CCH(2)t-Bu)(6)], 6, in trace amounts. The single-crystal X-ray structures of 3 and 6 are reported. The compounds 3, 4, and 6 consist of well-separated ion pairs introducing carbaalanates as weakly coordinating anions and stabilizing aluminum hydride cations.
authors.affiliation: Institut für Anorganische Chemie der Georg-August-Universität Göttingen, Germany.
authors.forename: Andreas
authors.initials: A
authors.lastname: Stasch
authors.forename: Herbert W
authors.initials: HW
authors.lastname: Roesky
authors.forename: Mathias
authors.initials: M
authors.lastname: Noltemeyer
authors.forename: Hans-Georg
authors.initials: HG
authors.lastname: Schmidt