Crystal structure of a new oximato-bridged one-dimension(1D) chain-like copper complex polymer {[Cu4(dmg)2(Hdmg)2(H2dmg)2(H2O)2](ClO4)2}∞

A novel copper complex polymer {[Cu4(dmg)2(Hdmg)2(H2dmg)2(H2O)2](ClO4)2}∞ (H2dmg=dimethylglyoxime) has been synthesized and its structure was determined by X-ray single crystal diffraction methods. The complex polymer is like a 1D infinite chain with topological type as a sequence of fused rings connected by out-planar CuO bonds, in which oximato groups (NO−) act as two-dentate bridges to link center Cu2+ cations. This structure shows that oximes have great perspective in coordination chemistry and supramolecular polymer chemistry. Molecular structure and spectroscopic properties of the polymer complex were discussed in the article.