Synthesis and characterization of the [Cu(Cin2bda)2]ClO4 and [Cu(Ncin2bda)2]ClO4 complexes: Crystal structure of [Cu(Ncin2bda)2]ClO4

• Published in: Russian journal of coordination chemistry 2009-04, Vol.35 (4), p.259-263
• Main Authors: Dehghanpour, S., Rominger, F.
• Format: Article
• Language: English
• Subjects: Chemistry; Chemistry and Materials Science; Inorganic Chemistry; Physical Chemistry
• ISSN: 1070-3284; 1608-3318
• DOI: 10.1134/S1070328409040058

Two copper(I) complexes [Cu(Cin 2 bda) 2 ]ClO 4 ( I ) and [Cu(Ncin 2 bda) 2 ]ClO 4 ( II ) have been prepared by the reaction of the ligands N 2 ,N 2 ′- bis (3-phenylallylidene)biphenyl-2,2′-diamine (L 1 ) and N 2 ,N 2 ′- bis [3-(2-nitrophenyl)allylidene]biphenyl-2,2′-diamine (L 2 ) and copper(I) salt. These compounds were characterized by CHN analyses, 1 H NMR, IR, and UV-Vis spectroscopy. The C=N stretching frequency in the copper(I) complexes shows a shift to a lower frequency relative to the free ligand due to the coordination of the nitrogen atoms. The crystal and molecular structure of II was determined by X-ray single-crystal crystallography. The coordination polyhedron about the copper(I) center in the complex is best described as a distorted tetrahedron. A quasireversible redox behavior was observed for complexes I and II .