Reactivity of Yellow Arsenic towards Cyclic (Alkyl)(Amino) Carbenes (CAACs)
Résumé
Different cyclic (alkyl)(amino)carbenes (CAACs) were reacted with yellow arsenic. Several products [(CAAC‐n) 2 (μ,η 1:1 ‐As 2 )] (n=1 ( 1 ), 4 ( 2 )), [(CAAC‐2) 3 (μ 3 ,η 1:1:1 ‐As 4 )] ( 3 ) and [(CAAC‐3) 4 (μ 4 ,η 1:1:1:1 ‐ As 8 )] ( 6 ) were isolated due to the differing steric properties of CAAC‐1‐4 . The products contain As 2 , As 4 or As 8 units and represent the first examples of CAACs‐substituted products of yellow arsenic. The reactivity of As 4 was compared with the reactivities of P 4 and the interpnictogen compound AsP 3 , which led to a series of phosphorus‐containing derivatives such as ([(CAAC‐3) 3 (μ 3 ,η 1:1:1 ‐P 4 )] ( 4 ) and [(CAAC‐3) 4 (μ 4 ,η 1:1:1:1 ‐P 8 )] ( 7 )) and [(CAAC‐3) 3 (μ 3 ,η 1:1:1 ‐AsP 3 )] ( 5 ). The products were characterized by spectroscopic and crystallographic methods and DFT computations were performed to clarify their formation pathway.
Domaines
ChimieOrigine | Fichiers éditeurs autorisés sur une archive ouverte |
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