A Monoanionic Arsenide Source: Decarbonylation of the 2-Arsaethynolate Anion upon Reaction with Bulky Stannylenes.

Author(s) Hinz, A.; Goicoechea, J.M.
Journal Angew Chem Int Ed Engl
Date Published 2016 Dec 12

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 Ter2 Sn (Ter=2,6-bis[2,4,6-trimethylphenyl]phenyl) is described, which leads to the unexpected formation of a [Ter3 Sn2 As2 ](-) cluster compound. On the reaction pathway to this cluster, several intermediates were identified and characterized. After the initial association of AsCO(-) to Ter2 Sn, decarbonylation occurs to give an anion featuring monocoordinate arsenic, [Ter2 SnAs](-) . Both species are not stable under ambient conditions, and [Ter2 SnAs](-) rearranges to form [TerSnAsTer](-) , an unprecedented anionic mixed Group 14/15 alkene analogue.

DOI 10.1002/anie.201609309
ISSN 1521-3773
Citation Angew Chem Int Ed Engl. 2016;55(50):1551515519.

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