title: Reductive Elimination of Hydrogen from Bis(trimethylsilyl)methyltin Trihydride and Mesityltin Trihydride.
abstract: Alkyltin trihydride [(Me3Si)2CHSnH3] was synthesized and the reductive elimination of hydrogen from this species was investigated. A methyl-substituted N-heterocyclic carbene reacts with the organotrihydride in dependence on stoichiometry and solvent to give a series of products of the reductive elimination and dehydrogenative tin-tin bond formation. Besides characterization of the carbene adduct of the alkyltin(II) hydride, a Sn4chain was also isolated, encompassing two stannyl-stannylene sites, which are stabilized each as NHC-adducts. Complete dehydrogenation resulted to give either a carbene-stabilized distannyne or a metalloid Sn9-cluster salt. Reductive elimination of hydrogen was also achieved with an excess of diethylmethylamine to give the alkyltin(II) hydride as a Lewis base free tetramer [(RSnH)4]. The method of cluster formation at low temperatures by hydrogen elimination was also transferred to the mesityl-substituted tin trihydride MesSnH3. In this case [(MesSn)10], showing a [5]prismane structure, was isolated in good yield and characterized. NMR spectroscopic features of the propellane-type cluster [Trip6Sn6] are reported.
authors.affiliation: Institut für Anorganische Chemie, Universität Tübingen, Auf der Morgenstelle 18, 72076, Tübingen, Germany.
authors.forename: Jakob-Jonathan
authors.initials: JJ
authors.lastname: Maudrich
authors.affiliation: Institut für Anorganische Chemie, Universität Tübingen, Auf der Morgenstelle 18, 72076, Tübingen, Germany.
authors.forename: Christian Patrick
authors.initials: CP
authors.lastname: Sindlinger
authors.affiliation: Institut für Anorganische Chemie, Universität Tübingen, Auf der Morgenstelle 18, 72076, Tübingen, Germany.
authors.forename: Frederik Sebastian William
authors.initials: FS
authors.lastname: Aicher
authors.affiliation: Institut für Anorganische Chemie, Universität Tübingen, Auf der Morgenstelle 18, 72076, Tübingen, Germany.
authors.forename: Klaus
authors.identifier: http://orcid.org/0000-0002-9318-5782
authors.initials: K
authors.lastname: Eichele
authors.affiliation: Institut für Anorganische Chemie, Universität Tübingen, Auf der Morgenstelle 18, 72076, Tübingen, Germany.
authors.forename: Hartmut
authors.initials: H
authors.lastname: Schubert
authors.affiliation: Institut für Anorganische Chemie, Universität Tübingen, Auf der Morgenstelle 18, 72076, Tübingen, Germany.
authors.forename: Lars
authors.identifier: http://orcid.org/0000-0003-4701-4410
authors.initials: L
authors.lastname: Wesemann
keywords: hydrides; metalloid cluster; reductive elimination; stannylene; tin