Synthesis, X-ray crystal structure, and reactivity of the binuclear copper(I) complex [Cu(3,5Me2-pz)(CNR)]2 (R = cyclohexyl, 3,5Me2-pz = 3,5-dimethylpyrazolate) toward RNCO, PhNCS, COS and CS2. N,S coordination of the 3,5-dimethylpyrazolecarbodithioate anion in [(RNC)2Cu(pz-C(S)-S)].