作者:Urmila Pal Chaudhuri、Lei Yang、Laura R. Whiteaker、Arunendu Mondal、Matthew R. Fultz、Douglas R. Powell、Robert P. Houser
DOI:10.1016/j.poly.2007.08.004
日期:2007.11
Mononuclear copper(II) complexes of a family of pyridylmethylamide ligands HL, HLMe, HLPh, HLMe3 and HLPh3, [HL = N-(2-pyridylmethyl)acetamide; HLMe = N-(2-pyridylmethyl)propionamide; HLPh = 2-phenyl-N-(2-pyridylmethyl)acetamide; HLMe3 = 2, 2-dimethyl-N-(2-pyridyhnethyl)propionamide; HLPh3 = 2,2,2-triphenyl-N-(2-pyridylmethyl)acetamide], were synthesized and characterized. The reaction of copper(II) salts with the pyridylmethylamide ligands yields complexes [Cu(HL)(2)(OTf)(2)] (1), [Cu(HLMe)(2)](ClO4)(2) (2), [Cu(HL)(2)Cl](2)[CuCl4] (3), [Cu(HLMe3)(2)(THF)](OTf)(2) (4), [Cu(HLMe3)(2)(H2O)](ClO4)(2) (5a and 5b), [Cu(HLPh3)(2)(H2O)](ClO4)(2) (6), [Cu(HL)(2,2'-bipy)(H2O)](ClO4)(2) (7), and [Cu(HLPh)(2,2'-bipy)(H2O)](ClO4)(2) (8). All complexes were fully characterized, and the X-ray structures vary from four-coordinate square-planar, to five-coordinate square-pyramidal or trigonal-bipyramidal. The neutral ligands coordinate via the pyridyl N atom and carbonyl 0 atom in a bidentate fashion. The spectroscopic properties are typical of mononuclear copper(II) species with similar ligand sets, and are consistent their X-ray structures. (C) 2007 Elsevier Ltd. All rights reserved.