Preparation, Thermoanalytical and Spectral Properties of Ni(Ⅱ) Complexes with Furopyridines

摘要

The thermal decomposition of the complexes Ni(SCN)_2(fp)_4 · 2H_2O (Ⅰ), Ni(SCN)_2(mfp)_4 (Ⅱ) and Ni(SCN)_2(dmfp)_3 (Ⅲ) (where fp = furo[3,2-c]pyridine, mfp = 2-methylfuro[3,2-c]pyridine and dmfp = 2,3-dimethylfuro[3,2-c]pyridine) have been investigated in dynamic air from room temperature to 1000℃ by means of TG, DTG and DTA The chemical composition of the complexes, solid intermediates and the resultant products of thermolysis have been identified by means of elemental analysis and complexometric titration. The results revealed that NiO was left as residue at the end of the thermal degradation experiments. IR data suggested that fp, mfp and dmfp were coordinated to Ni(Ⅱ) through the N atom of the respective heterocyclic ring.