Some metal-ion complexes with ligands formed by reaction of amines with aliphatic carbonyl compounds. Part VI. Formation of cis-di-isothiocyanato[4,6,6-trimethyl-1,9-bis(2-pyridyl)-3,7-diazanon-3-ene] nickel(II)

Abstract

Bis[2-(2-aminoethyl)pyridine]di-isothiocyanatonickel(II), (I), reacts slowly with acetone at room temperature to form cis-di-isothiocyanato[4,6,6-trimethyl-1,9-bis(2-pyridyl)-3,7-diazanon-3-ene]nickel(II). (II), a complex with a quadridentate ligand formed by linking the primary amino-groups of the starting material to give an amine–imine bridge.