A family of molybdenum complexes with a general formula of [MoO2L]2 have been synthesized and fully characterized, where L is a tridentateONOSchiff base ligand featuring a Cl substituent in different positions on the aromatic ring of salicylidene-2-aminophenolato backbone. The solvent molecule stabilized the monomeric structure of [MoO2LD] (D = DMF or DMSO) allowing single-crystal X-ray diffraction