Synthesis and Crystal Structures of Two Schiff Base Copper(II) Complexes Derived from 4-Chloro-2-[(2-Morpholin-4-ylethylimino)Methyl] Phenol

摘要

A centrosymmetric mononuclear copper(II) complex, [Cu(L~1)2] (I), and a phenolate oxygen-bridged dinuclear copper(II) complex, [Cu2(L~2)4] (II) (HL~1 = 4-chloro-2-[(2-morpholin-4-ylethylimino)methyl]phenol, HL~2 = 4-chloro-2-(cyclohexylimino-methyl)phenol), were synthesized and characterized by elemental analyses, IR, and single crystal X-ray diffraction. The crystal of 1 is monoclinic: space group P2_1, a = 13.396(3), b = 5.339(1),c= 19.740(4) A, β= 108.64(3)°, V= 1337.8(5) A~3, Z= 2. The crystal of II is monoclinic: space group P2_1, a = 9.157(2),Z)= 22.715(4), c= 12.169(2) A, β = 95.28(3)°, V= 2520.4(8) A~3,Z= 2. The Cu atom in I, lying,on the inversion center, is four-coordinate in a square planar geometry with two phenolate oxygen and two imine nitrogen atoms. Each Cu atom in II is five-coordinate in a square pyramidal geometry with two phenolate oxygen and two imine nitrogen atoms from two L~2 ligands defining the basal plane and with one phenolate oxygen atom of another L~2 ligand occupying the apical position.