Syntheses and Crystal Structures of Two Novel Dinuclear Copper(II) and Zinc(II) Complexes Derived from Flexible Schiff Bases

Two novel structurally similar dinuclear Schiff base complexes, [Cu 2 (DMN) 2 (NCS) 2 ] ( 1 ) and [Zn 2 (DMP) 2 (NCS) 2 ] ( 2 ) (HDMN = 1‐[(3‐dimethylaminopropylimino)methyl]naphthalen‐2‐ol, HDMP = 2‐[(2‐diethylaminoethylimino)methyl]phenol), were prepared by an analogeous procedure and characterized by elemental analyses, infrared spectroscopy, and single crystal X‐ray determinations. Each metal ion in the complexes has a square‐pyramidal coordination. The distinct difference between the two structures is the basal and apical donor atoms. In 1 , the Cu atom is coordinated by one O and two N atoms of one (DMN) − , ion as well as by one terminal N atom of a thiocyanate anion in the basal plane, and by one O atom of another (DMN) − ion at the apical position. The Cu···Cu separation is 3.080(2) Å. While in 2 , the Zn atom is coordinated by one O and two N atoms of one (DMP) − , ion together by one O atom of another (DMP) − ion in the basal plane, and by one terminal N atom of a thiocyanate anion at the apical position. The Zn···Zn separation is 3.205(4) Å.