Two coordination compounds based on 3-aminofurazan-4-carboxylic acid with copper(II) and nickel(II)

Abstract

Two coordination compounds were synthesized based on 3-aminofurazan-4-carboxylic acid (AFCA) with copper(II) and nickel(II), and characterized by elemental analysis and FTIR characterization. Single-crystal X-ray diffraction analysis revealed that [Cu(H₂O)₄(AFCA)₂·H₂O] (1) belongs to monoclinic, pertains to P21/c space group, β= 132.451(17)°, D_c = 1.921 g·cm^–3, and [Ni(H₂O)₄(AFCA)₂·H₂O] (2) belongs to orthorhombic, pertains to Pnnm space group, D_c = 1.913 g·cm^–3. In 1 and 2, metal ion (Cu^2 + and Ni^2 +) was hexacoordinated with four water molecules and two AFCA anions, which of furazan-ring presents typical monodentate coordination mode. Differential scanning calorimetry (DSC) was applied to assess the thermal decomposition behavior of 1 and 2. The non-isothermal kinetics parameters were calculated by the Kissinger’s method, Ozawa’s method and Starink’s method, respectively. In the end, impact sensitivity was also determined by standard method.

Keywords

Furazan copper(II)nickel(II)crystal structure thermal behaviour

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