Synthesis, Crystal Structure and Electrochemical Studies of catena ‐Poly([bis(1‐vinyl‐1 H ‐imidazole‐ κN 3 )copper(II)]‐ µ ‐phthalato‐ κ 2 O : O ′)

The crystal of [Cu(pa)(vim) 2 ] n (where pa=phthalic acid dianion, vim=1‐vinyl‐1 H ‐imidazole) was synthesized and its structure was characterized by X‐ray single crystal diffractometry and elemental analysis. It crystallizes in monoclinic system, C 2/ c space group with the cell parameters of a =1.6527(3) nm, b =0.81800(16) nm, c =1.4463(3) nm, β =113.19(3)°, V =1.7973(7) nm 3 , Z =4, and D c =1.537 g·cm − 3 . Final R indices [ I > 2 δ( I )] are: R 1 =0.0476, wR 2 =0.1235 while R indices for all data are: R 1 =0.0693, wR 2 =0.1355. The title compound exhibits an existence of polymeric zigzag chains extended along c ‐axis. Each Cu(II) ion is located at a crystallographic center of symmetry being coordinated by two N and two O atoms in a distorted square‐planar geometry. The electrochemical studies reveal that redox of Cu 2+ /Cu + is a quasi‐reversible one‐electron process.