(2-Hydroxybenzoato-κO 1)[tris(1-methylbenzimidazol-2-ylmethyl-κN 3)amine-κN]cobalt(II) perchlorate dimethylformamide sesquisolvate

In the title complex, [Co(C7H5O3)(C27H27N7)]ClO4·1.5C3H7NO, the CoII ion is five-coordinated by four N atoms from a tris(N-methylbenzimidazol-2-ylmethyl)amine (Mentb) ligand and one O atom from a salicylate ligand in a distorted trigonal–bipyramidal geometry with approximate molecular C 3 symmetry. The perchlorate ion is disordered over two sites with equal occupancy. One dimethylformamide solvent molecule lies on a general position and is disordered over two coplanar orientations with equal occupancy. A second dimethylformamide molecule is disordered about a twofold rotation axis. There is an intramolecular O—H⋯O hydrogen bond in the cation.