Activation of CS2 by a “masked” terminal nickel sulfide

Abstract

The “masked” terminal nickel sulfide complexes [K(L)][(L^tBu)Ni^II(S)] (L^tBu = {(2,6-ⁱPr₂C₆H₃)NC(^tBu)}₂CH, L = 18-crown-6, 2,2,2-cryptand) activate CS₂ to give the trithiocarbonate products [(L^tBu)Ni^II(S,S:κ₂-CS₃)]⁻ or [(S,S:κ₂-CS₃)Ni^II{S,S:κ₂-CS₂(L^tBu)}]⁻, further confirming the nucleophilicity of the sulfide (S²⁻) ligand in these complexes.