Five new (Me4N)(NO2)2C6H3CO2 adducts with MCl2 (M = Zn, Co, Cd) and SnR3Cl (R = Me, Ph) have been synthesized and studied by infrared spectroscopy. The suggested structures are discrete, the anion behaving as mono- and bichelating ligand towards MX2, tri- and monodentate towards SnR3Cl (R = Me, Ph).The environment around Zn, Co and Cd is tetrahechal, while the tin (IV) centre is trigonal bipyramidal.