LINKAGE OF COORDINATIVELY UNSATURATED COP PER(II) MONOMERS VIA CYANO VERSUS TETRAZOLYL DONOR .1.

Reaction of a methanolic copper(II) acetate solution with tetrazolyl e nol derivatives 2a (HL(2)) or 2b (HL(3)) leads to the formation of the corresponding 2D-coordination polymers 4 ((2)(infinity)[CuL(2)(2)]) a nd 5 ((2)(infinity)[CuL(2)(3)]), respectively. Single-crystal X-ray di ffraction of the supramolecular species 4 and 5 established unequivoca lly the structures of the regioisomeric coordination polymers. On the contrary, reactions of 2c (HL(4)) with methanolic copper(II) acetate s olution and 2b (HL(3)) with methanolic zinc(II) acetate solution yield mononuclear chelate complexes 11 ([CuL(3)(4)]) and 12 ([ZnL(2)(3)(MeO H)(2)]). The structures of 11 and 12 have been established by X-ray st ructure analysis.