Synthesis, Characterization, and Crystal Structure of a Novel Trinuclear Schiff Base Copper(II) Complex Containing a [Cu₅I₇] Cluster

Abstract

A novel centrosymmetric trinuclear Schiff base copper(II) complex with a [Cu₅I₇] cluster [Cu(CuL)₂][Cu₅I₇], where L is the deprotonated form of N,N’-bis(3-methoxysalicylidene)propane-1,3-diamine, has been synthesized and characterized by elemental analysis and single crystal X-ray diffraction. The central Cu atom in the trinuclear copper(II) complex is in a tetrahedral coordination, and those in the terminal are in square planar coordination. In the [Cu₅I₇] cluster, seven I ions form a pentagonal bipyramid with only slight deviation from C_5h symmetry; the five face-to-face linked iodide tetrahedra of the pentagonal bipyramid contain Cu atoms.

Keywords:

• copper(II) complex
• copper(I) iodide
• crystal structure
• Schiff base
• synthesis