Citation: Fabre, Paul-Louis; Galibert, Anne Marie; Soula, Brigitte; Dahan, Fran\,coise; Castan, Paule (2001). Complexation of 3,4-bis(cyanamido)cyclobutane-1,2-dione dianion with copper. Crystal structures and spectroscopic data of copper-(I) and -(II) complexes. Journal of the Chemical Society, Dalton Transactions, , pp. 1529-.