N-Metallation of MS2N2 rings. X-ray crystal structures of [(η5-C5Me5)Ir(S2N2)Au(PPh3)][ClO4], [{(η5-C5Me5)Ir(S2N2)Au}2(μ2-dppm)][ClO4]2 and [Au(dppeS-P)Cl]2

Abstract

Bimetallic complexes [(η⁵-C₅R₅)M(S₂N₂)Au(PPh₃)][ClO₄] and tetrametallic species [{(η⁵-C₅R₅)M(S₂N₂)Au}₂(μ₂-P^P)][ClO₄]₂ (R = H, M = Co; R = Me, M = Ir; P^P = dppm or dppe) can be prepared by treatment of [(η⁵-C₅R₅)M(S₂N₂)] with gold(I) electrophiles generated by chloride abstraction from [AuCl(PPh₃)] or [(AuCl)₂(μ₂-P^P)]. X-Ray crystallography of [(η⁵-C₅Me₅)Ir(S₂N₂)Au(PPh₃)][ClO₄] and [{(η⁵-C₅Me₅)Ir(S₂N₂)Au}₂(μ₂-dppm)][ClO₄]₂ confirms auration of the metal-bound nitrogen atom of the MS₂N₂ ring. π-Stacking of theMS₂N₂ rings occurs within both structures.