SYNTHESES STRUCTURES AND PHYSICAL PROPERTIES OF CYANIDE BRIDGED M II Ni II BIMETALLIC COMPLEXES WITH 2 PYRIDINEETHANOL M II Fe Co and Ni

OpenAlex İngilizce

In this study, cyanide complexes with chemical formula [M(hepH)2Ni(μ-CN)2(CN)2] (hepH = 2-pyridineethanol; M = Fe(II), Co(II) and Ni(II); abbreviated to hereafter M-hepH-Ni) were obtained for the first time. The structures of these complexes were determined by using FT-IR and Raman spectroscopies, thermal and elemental analyses. The electrical and magnetic properties of the complexes were investigated by four-probe and Evans methods, respectively. Vibration assignments have been obtained for all the observed bands and the spectral features were observed supported to the structures of complexes. Thermal behaviors of the complexes were examined using TG, DTG and DTA curves in the temperature range 30 - 700 °C in the static air atmosphere. According to thermal analysis curves, it has seen that neutral ligands (hepH) are released and cyanide ligands are decomposed in the complexes, followed usual decomposition mechanism. The final decomposition products have been found to be the metal oxides. The magnetic measurements of the complexes were compared with experimental and theoretical values of the magnetic moment. Furthermore, Fe-hepH-Ni, Co-hepH-Ni and Ni-hepH-Ni complexes were determined to be paramagnetic.