Beiträge zur Chemie des Bors, LXXIII1 Über einige monomere und trimere Arsinoborane / Contributions to the Chemistry of Boron, LXXIII1 Some Monomeric and Trimeric Arsino Boranes

Monomeric and trimeric arsinoboranes have been obtained by three different methods. Bis(amino)arsinoboranes are monomeric, (C₆H₅)₂BAs(CH₃)₂ is partially associated and decomposes readily, while (CH₃)₂BAs(CH₃)₂ proved to be trimeric as well as (CH₃)₂AsBBrCH₃. Trimeric and tetrameric (CH₃)₂AsBH₂ were isolated as the products of thermolysis of (CH₃)₄As₂ · BH₃. IR, MS and NMR data of the compounds are discussed.