Synthesis and Characterization of Coordination Polymers of 1,2‐bis‐(4‐Thio‐1,3,5‐hexahydro‐1‐triazinyl)ethane

Abstract

Coordination polymers of Mn(II), Fe(II), Co(II), Ni(II), Cu(II) and Zn(II) with the 1,2‐bis‐(4‐thio‐1,3,5‐hexahydro‐1‐triazinyl)ethane (H2BTHTE) ligand have been prepared in DMF solution. The coordination polymers have been characterized by their elemental analyses, magnetic susceptibility and by electronic and infrared spectral measurements. The thermal stability of each polymer was determined by thermogravimetric analysis. The thermal stability of the coordination polymers obtained from the thermograms is in the following order: Fe > Zn > Mn = Co > Ni > Cu. The Cu(II), Co(II), Ni(II) and Fe(II) coordination polymers are of six‐coordinated octahedral geometry while the Mn(II) and Zn(II) coordination polymers are of four‐coordinated tetrahedral structure. The ligand field and nephelauxetic parameters have been determined from the spectra using the ligand field theory of spin‐allowed transitions and which were found to be consistent with six‐coordinated structures for the Cu(II), Co(II), Ni(II) and Fe(II) coordination polymers. Elemental analyses indicate a ligand metal ratio of 1:1 in all of the coordination polymers and the coordination of water molecules with the central metal atom in the case of the Cu(II), Fe(II), Co(II) and Ni(II) coordination polymers.