title: A Monoanionic Arsenide Source: Decarbonylation of the 2-Arsaethynolate Anion upon Reaction with Bulky Stannylenes.
abstract: We report fundamental studies on the reactivity of the 2-arsaethynolate anion (AsCO-), a species that has only recently become synthetically accessible. The reaction of AsCO-with the bulky stannylene Ter2Sn (Ter=2,6-bis[2,4,6-trimethylphenyl]phenyl) is described, which leads to the unexpected formation of a [Ter3Sn2As2]-cluster compound. On the reaction pathway to this cluster, several intermediates were identified and characterized. After the initial association of AsCO-to Ter2Sn, decarbonylation occurs to give an anion featuring monocoordinate arsenic, [Ter2SnAs]-. Both species are not stable under ambient conditions, and [Ter2SnAs]-rearranges to form [TerSnAsTer]-, an unprecedented anionic mixed Group 14/15 alkene analogue.
authors.affiliation: Department of Chemistry, University of Oxford, Chemistry Research Laboratory, 12 Mansfield Road, OX1 3TA, Oxford, UK.
authors.forename: Alexander
authors.identifier: 0000-0002-7831-1410
authors.initials: A
authors.lastname: Hinz
authors.affiliation: Department of Chemistry, University of Oxford, Chemistry Research Laboratory, 12 Mansfield Road, OX1 3TA, Oxford, UK.
authors.forename: Jose M
authors.identifier: 0000-0002-7311-1663
authors.initials: JM
authors.lastname: Goicoechea
keywords: 2-arsaethynolate; 2-phosphaethynolate; arsenic; arsinidene; phosphorus