Abstract
A series of novel salicylaldehyde (Sal) mixed ligand Mn(III) complexes of MnLNEX(Sal) containing bis(phenol) diamine ligands (H2LNEX), have been prepared and their spectroscopic (IR, UV–Vis, ESI-MS), X-ray, magnetic and redox properties have been investigated. The X-ray crystallography analysis shows that all complexes are monomeric and every Mn(III) center is surrounded by four-dentate ligand and salicylaldehyde molecule. In addition, the geometric configurations of all complexes are slightly distorted octahedral. The temperature dependence of magnetic susceptibility of complexes confirms the mononuclear structure of complexes. Oxidation of the Mn(III) complexes yielded the corresponding Mn(III)-phenoxyl radical species during the cyclic voltammetry experiments. To the best of our knowledge, this is one the rare reports on salicylaldehyde coordination to manganese.
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