Synthesis and characterization of derivatives of copper(I) with N- and S-donor ligands
作者:Claudio Pettinari、Riccardo Pettinari、Maura Pellei、Giancarlo Gioia Lobbia
DOI:10.1016/s0277-5387(99)00089-3
日期:1999.5
New copper(I) complexes of the type [(PBz(3))L3Cu]X, (PBz(3))L2CuX, [(PBz(3))(2)L2Cu]X, [(PBz(3))(3)LCu]X (L=monodentate N-donor imidazole- or pyrazole-type ligand, Bz=benzyl, X=NO3 or ClO4), (PBz(3))(y)(N-N)(x)CuNO3 (N-N=bis(pyrazol-1-yl)methane, x=y=1; N-N=bis(1,2,4-triazol-1-yl)methane, x=y=2), (PPh3)L-2'CuX, (PPh3)(2)L'CuX, [(PPh3)L-3'Cu]X and (PPh3)L'CuX, (L'=monodentate S-donor 1-methyl-imidazoline-2(3H)-thione or imidazoline-2(1,3H)-thione) were obtained from the reaction of (PR3)(n)CuX with the appropriate N- or S-donor ligand. Reaction between [(PPh3)(n)Cu(L)(m)]X with PBz(3) often resulted in the formation of new [(PBz(3))(z)Lm-1Cu]X (z=n or n+1) complexes upon displacement of one molecule of L and two or three molecules of PPh3, whereas reaction of [(N-N)(2)Cu]ClO4 with PBz(3) and 1,10-phenanthroline (Phen) yielded [(PBz(3))(2)CuClO4] and [(Phen)(2)Cu]ClO4, respectively, upon displacement of both molecules of bidentate chelating ligands. No reaction occurred between (PPh3)L-2'CuX, (PPh3)(2)L'CuX or [(PPh3)L-3'Cu]X and PBz(3). All the derivatives obtained were characterized by IR spectroscopy, H-1 NMR, and conductance studies, and in some cases also by molecular weight measurements. (C) 1999 Elsevier Science Ltd. All rights reserved.