Abstract
In the title complex, [Cu(C2H6N2S)(4)] I, the Cu-I atom lies on a (4) over bar axis. Each Cu-I centre binds to the S atoms of four N-methylthiourea ligands in a distorted tetrahedral environment. In the crystal structure, intermolecular N - H center dot center dot center dot S and N - H center dot center dot center dot I hydrogen bonds, together with weak C - H center dot center dot center dot N interactions, link the cations and anions into a three-dimensional network.