Coordination Compounds of Niobium(IV) Oxide Dihalides Including the Synthesis and the Crystallographic Characterization of NHC Complexes
作者:Marco Bortoluzzi、Eleonora Ferretti、Fabio Marchetti、Guido Pampaloni、Calogero Pinzino、Stefano Zacchini
DOI:10.1021/acs.inorgchem.5b02888
日期:2016.5.2
The 1:1 molar reactions of NbOX3 with SnBu3H, in toluene at 0 °C in the presence of oxygen/nitrogen donors, resulted in the formation of NbOX2L2 (X = Cl, L2 = dme, 2a; X = Br, L2 = dme, 2b; X = Cl, L = thf, 2c; X = Cl, L = NCMe, 2d; dme = 1,2-dimethoxyethane, thf = tetrahydrofuran), in good yields. The 1:2 reactions of freshly prepared 2d and 2b with the bulky NHC ligands 1,3-bis(2,4,6-trimethylph
NbOX 3与SnBu 3 H的1:1摩尔反应,在氧气/氮气供体存在下于0°C的甲苯中,导致形成NbOX 2 L 2(X = Cl,L 2 = dme,2a ; X = Br,L 2= dme,2b; X = Cl,L = thf,2c; X = Cl,L = NCMe,2d; dme = 1,2-二甲氧基乙烷,thf =四氢呋喃),收率良好。新鲜制备的2d和2b与庞大的NHC配体1,3-双(2,4,6-三甲基苯基)咪唑-2-亚烷基,Imes和1,3-双(2,6-二甲基苯基)的1:2反应)咪唑-2-亚基,己基分别提供了NbOCl复合物2(艾姆斯)2,3,和NbOBr 2(Ixyl)2,4,在50-60%的产率。2b与NaOR在四氢呋喃中的反应以约60%的收率得到NbOCl(OR)(R = Ph,5 ; R = Me,6)。所有产品均通过分析和光谱技术表征;此外,进行了DFT计算,以了解合成