Aryl-substituted Triarsiranes: Synthesis and Reactivity

Cyclotriarsanes are rare and limited synthetic approaches have hampered reactivity studies on these systems. Described in here is a scalable synthetic protocol towards (AsAr) 3 (Ar = Dip, 2,6- i Pr 2 -C 6 H 3 ; Tip, 2,4,6- i Pr 3 -C 6 H 2 ), which allowed to study their reactivity towards [Cp 2 Ti(C 2 (SiMe 3 ) 2 ], affording titanocene diarsene complexes and towards N-heterocyclic carbenes (NHCs) to give straightforward access to a variety of NHC-arsinidene adducts. The electronic structure of the titanium diarsene complxes has been studied and they are best described as Ti(IV) species with a doubly reduced As 2 Ar 2 ligand. These findings will make (AsAr) 3 valuable precursors in the synthetic inorganic and organic chemistry.