Acetic acid induced self-assembly of supramolecular compounds [Et4N]3[(WS4Cu2)2(mu-CN)3].2MeCN and [PPH4][WS4Cu3(mu-CN)2].MeCn from performed clusters [A]2[WS4(CuCN02] (A= Et4N, PPh4)

A demonstration that the acid-induced assembly of two interesting W/Cu/S supramolecular compounds, [Et4N]3[(WS4Cu2)2-(mu-CN)3].2MeCN and [PPH4][WS4Cu3(mu-CN)2].MeCN from performed clusters [Et4N or PPh4]2WS4(CuCN)2 is presented. The general strategy of using a weak acid to remove cynaide without causing decomposition of the cluster appears to be suitable only at lower concentrations of acetic acid.