Synthesis, Crystal Structures and Electrocatalytic Properties of Ni(II), Cu(II) Complexes with Pymetrozine Ligands

Two complexes of Ni(II) and Cu(II) with pymetrozine ligands, namely [Ni(L)(2)(Ac)(2)(H2O)(2)]center dot 4H(2)O (1) and [Cu-2(L)(2)(Ac)(4)]center dot 2H(2)O (2) (L=pymetrozine) have been prepared and characterized by elemental analysis, powder Xray diffraction (XRD), thermal analysis (TG), IR, and cyclic voltammetry (CV). X-ray single-crystal structural analysis revealed that 1 was a mononuclear structure, and the Ni (II) ion adopted a distorted octahedral coordinated geometry formed by two nitrogen atoms from pymetrozine ligands, two oxygen atoms from coordinate H2O and the other two oxygen atoms from acetates. Complex 2 was a binuclear structure, in which a pair of acetates anions bridged two Ca(II) cations to form a dinuclear molecule. CV analyses showed that compounds 1 and 2 had electrocatalytic activities towards H2O2. CCDC: 964347, 1; 964348, 2.