The reaction of [Li{η2-OC(Mes‘)AsC(Mes‘)O}(OEt2)], Mes‘ = C6H2Pri3-2,4,6, with [{RhCl(COD)}2],
COD = 1,5-C8H12, in either a 1:1 or 2:1 stoichiometry
yields the novel rhodium−diacylarsenido complexes,
[{Rh(COD)}2-μ-Cl-μ-{As[C(O)Mes‘]2}] and respectively. The X-ray crystal structure of each is described and mechanisms for
their formations proposed