Syntheses, crystal structures and luminescent properties of two one-dimensional coordination polymers [CuX(dmpzm)]n (X=CN, NCS; dmpzm=bis(3,5-dimethylpyrazolyl)methane)

Reactions of CuX (X=CN, NCS) with bis(3,5-dimethylpyrazolyl)methane (dmpzm) gave rise to two new coordination polymers [CuX(dmpzm)]n (X=CN (2), NCS (3)). Compounds 2 and 3 were characterized by elemental analysis, IR spectra and X-ray crystallography. The molecular structure of 2 has a one-dimensional zigzag chain of [CuCN(dmpzm)] units while that of 3 consists of a one-dimensional single-strand spiral chain of [CuNCS(dmpzm)] units. The luminescence properties of CuX (X=I (1), CN (2), NCS (3)) adducts of dmpzm along with free dmpzm were also investigated.