摘要: A series of different cyclo-diarsa-diazenium salts bearing several bulky groups such as supermesityl (Mes* = 2,4,6-tBu3C6H2) and m-terphenyl (2,6-Mes2-C6H3, Mes 2,4,6-Me3C6H2) anions triflate (OTf SO3CF3 trifluoromethylsulfonate) tetrachloridogallate (GaCl4−) were synthesized fully characterized. The novel 1-chloro-cyclo-1,3-diarsa-2,4-diazenium cation represents the first example a binary cyclic As(III)/N four-membered heterocyclic cation, with di- tricoordinated As atom delocalized π bond along NAs(+)N unit. addition excess Me3SiN3 yields characterized cationic arsenic azide, 1-azido-cyclo-1,3-diarsa-2,4-diazenium-μ-azido-hexachlorido-digallate. Cl−/N3− exchange is triggered by action Lewis acid GaCl3. Depending on stoichiometry, μ-azido-hexachlorido-digallate either 1-chloro- or 1-azido-cyclo-1,3-diarsa-2,4-diazenium cations even mixture both are observed. Moreover, it was special in...
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