Synthesis, Crystal Structure and Electrochemical Studies of catena‐Poly([bis(1‐vinyl‐1H‐imidazole‐κN3)copper(II)]‐ µ ‐phthalato‐κ2O:O′)

Abstract

AbstractThe crystal of [Cu(pa)(vim)2]n (where pa=phthalic acid dianion, vim=1‐vinyl‐1H‐imidazole) was synthesized and its structure was characterized by X‐ray single crystal diffractometry and elemental analysis. It crystallizes in monoclinic system, C2/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) nm3, Z=4, and Dc=1.537 g·cm−3. Final R indices [I>2δ(I)] are: R1=0.0476, wR2=0.1235 while R indices for all data are: R1=0.0693, wR2=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 Cu2+/Cu+ is a quasi‐reversible one‐electron process.