Synthesis, Structural and Energetic Properties of Copper(II) Perchlorate Complex with Aminoguanidine

The complexation of copper(II) perchlorate with aminoguanidine hemesulfate (AGHS) yield related mononuclear complex bis(aminoguanidine)copper(II) perchlorate; [Cu(AG)2](ClO4)2 (I). Characterization of complex was done by elemental analysis, electronic spectra, IR studies and x-ray studies. From analytical data, a stoichiometry of 1:2 of metal to ligand was determined for the complex. The structure consists of centrosymmetric square planar [Cu(AG)2]2+ cation and perchlorate counterion. The Cu(II) atom is four-coordinated by two imine N atoms and two amine N atoms from two aminoguanidine ligands, forming a slightly distorted square-planar coordination. In the crystal structure, molecules are linked through intermolecular N-H…O hydrogen bonds, forming a network. The thermal decomposition process of this complex was investigated through differential scanning calorimetry (DSC) and the sensitivities toward impact and friction were assessed using a BAM drophammer and a BAM friction tester.