Discrete and one dimensional extended Mn(III) Schiff base complexes with pseudohalides: Synthesis, structure and magnetic studies

Slight variations in the Schiff base ligand and the linker length, led to the isolation of three different Mn(III) complexes under similar synthetic conditions that were characterized structurally and magnetically. [Mn III (L1)(N 3 )(H 2 O)]∙DMSO (1) and [Mn III (L2)N(CN) 2 (CH 3 OH)]∙CHCl 3 (3) are azide and dicyanamide based monomers of Mn(III) with salophen and naphthophen as ligands respectively while [Mn III (L1)N(CN) 2 ] n ∙H 2 O (2) is a dicyanamide based 1D-extended structure of Mn(III) with salophen ligand. Magnetic studies on 2 reveal antiferromagnetic interactions between the magnetic centers (J 1 = -0.49 cm -1 ). All the three complexes have strong hydrogen bonding interactions connecting the monomeric units or polymeric chains into 2-D assemblies. The presence of supramolecular interactions within 1 - 3 was analyzed using Hirshfeld method.