Abstract
Transition metal complexes, [M(COOPh)2(TMEDA)�(OH2)], (where M=Co+2 and Mn+2) and [Cu3(COOPh)2(TEA)2(CH3COO)2] have been synthesized by using sodium benzoate, tetramethyl-ethylenediamine and triethanolamine. The bonding nature and structure of complexes (1), (2) and (3) were explored through X-ray crystallography, IR, elemental analysis and magnetic studies. Single crystal X-ray analysis showed that in (1) and (2) complexes, each M (II) is bridged by two benzoate ions, one TMEDA and one water molecule while in (3) complex, Cu1 is coordinated by four oxygen atoms, two from TEA and two from carboxylate group while Cu2 is coordinated by three oxygen atoms and one nitrogen atom. All three complexes displayed triclinic system with space group P-1. Vibrating sample magnetometer measurement justified that these complexes are soft magnetic materials and can retain a certain value of magnetization even when magnetic field is removed.
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