Substituted 2,2′-bipyridines as ligands. preparation and characterization of 4,4′-disubstituted 2,2′-bipyridine derivatives of the hexacarbonyls of chromium, molybdenum and tungsten
作者:Joseph A. Connor、Colin Overton
DOI:10.1016/s0022-328x(00)98807-7
日期:1983.6
The preparation of cis-[M(CO)4(biL)] (M = Cr, Mo, W; biL is 4,4′X2-2,2′-Bipyridine; X = NMe2, NH2, OMe, CMe3, Me, H, Ph, CHCHPh, Cl, CO2H, CO2Me, NO2) is reported. The ligands and complexes are characterized by spectroscopy (IR, electronic absorption and emission, NMR (1H, 13C, 15N, 95Mo)) and microanalysis. The variations observed in the spectroscopic properties of these complexes are strongly correlated
的制备顺式- [M(CO)4(BIL)](M =铬,钼,W; BIL是4,4'X 2 -2,2'-联吡啶; X = NME 2,NH 2,OME,据报道CMe 3,Me,H,Ph,CH = CHPh,Cl,CO 2 H,CO 2 Me,NO 2。配体和配合物的特征在于光谱(红外,电子吸收和发射,核磁共振(1 H,13 C,15 N,95Mo))和微量分析。这些配合物的光谱性质中观察到的变化与X组的电子代用品参数密切相关。这在最低能量(可见光)吸收(变化约20%)中最为明显。供体和受体取代基的极值之间为0.8 eV。