Experimental and theoretical studies on bis[μ-2-methoxy-N′-(2-oxidobenzoyl)benzohydrazidato(3-)]dipyridinetricopper(II)

Abstract

A novel homotrinuclear pyridine Schiff base copper(II) compound, [Cu 3 (C 15 H 11 N 2 O 4 ) 2 (C 5 H 5 N) 2 ], has been synthesized and characterized by elemental analysis and X-ray single crystal deterimination. X-ray structural determination reveals that each copper(II) ion has a distorted square-planar geometry. The central copper ion is coordinated by two O and two N atoms from two Schiff base ligands, while each terminal copper ion is coordinated by one N and two O atoms of one Schiff base ligand and by one N atom of a pyridine molecule. Density funcational theory (DFT) method calculations of the structure, atomic charges distribution and natural bond orbital (NBO) analyses have been performed. The coordinate stabilization energies show that the trinuclear copper(II) compound is very stable.

A 1D copper(II) chain featuring novel hexanuclear secondary building blocks: Synthesis, crystal structure and magnetic property

“…The size of the ring of the metallamacrocycle can be tuned by varying the steric volume of the N-acyl residue of the ligand. Linear trinuclear compounds can be obtained when bivalent metal ions such as Co(II), Ni(II), Cu(II) and Zn(II) were used [4,[12][13][14][30][31][32][33][34].…”

“…The size of the ring of the metallamacrocycle can be tuned by varying the steric volume of the N-acyl residue of the ligand. Linear trinuclear compounds can be obtained when bivalent metal ions such as Co(II), Ni(II), Cu(II) and Zn(II) were used [4,[12][13][14][30][31][32][33][34].In contrast to N-acyl-salicylhydrazide ligands which contain only one salicylhydrazide group, the ligands derived from the acylation of multi-carboxyl acid and salicylhydrazide, which contain two or more salicylhydrazide groups, have never been used in the synthesis of the coordination compound. This type of ligand possesses much more coordination sites, which may be more favorable for the construction of polynuclear complexes.…”

Interplay of thermochemistry and Structural Chemistry, the journal (volume 19, 2008) and the discipline

“…Then Liang et al [108] describe the synthesis, characterization and crystal structure determination of a new homotrinuclear pyridine Schiff base copper(II) compound,…”