Synthesis, molecular structure and intramolecular aromatic-ring stacking interaction of a novel binuclear Cu(II) complex with 1,10-phenanthroline and phenylacetate

✍ Scribed by Le Xue-Yi; Zhou Xiao-Hua; Yu Kai-Bei; Ji Liang-Nian

• Publisher: John Wiley and Sons
• Year: 2010
• Tongue: English
• Weight: 278 KB
• Volume: 18
• Category: Article
• ISSN: 0256-7660
• DOI: 10.1002/cjoc.20000180435

✦ Synopsis

Abstract

The complex [Cu (phen)~2~(POAc)~3~ ]ClO~4~·4h~2~O has been synthesized and investigated by elemental analysis, IR spectroscopy and X‐ray diffraction methods, where phen = 1,10‐phenanthroline, POAc^−^ = phenylacetate group). The complex crystallizes in the triclinic space group Pi with two molecules in a unit cell of dimensions a = 1.0579(2) nm, b = 1.2423(3) nm, c = 1.9190(4) nm, a = 71.84(1)°, β = 80.50(2)°, Y = 88.60(1)°, V = 2.3625(9) nm^3^, R =0.0407 and R~w~ = 0.0656. The complex results from bridging of two Cu (phen)^2+^ units by three carboxylate groups, and each Cu^2+^ ion is in a distorted square pyramidal geometry with two nitrogen atoms of phen and three carboxylate oxygen atoms of POAc^−^. It has been showed that intramolecular stacking interactions occur between the phenyl moieties of POAc^−^ and aromatic rings of phen, leading to a novel molecule structure with two coordinating modes of carboxylate ligands, of which two phenylacetates are μ~2~—carboxylate—O‐bridging ligands, and the other is a μ~2~—carboxylate—O,O′‐bridging ligand.