Group 13 trihalide complexes of 9-fluorenone: a comparison of methods for assigning relative Lewis acidity
作者:Catherine S. Branch、Simon G. Bott、Andrew R. Barron
DOI:10.1016/s0022-328x(02)02029-6
日期:2003.1
9-fluorenone complexes MX3(9-fluorenone) [M=B, X=Cl (1); M=Al, X=Cl, Br (2), I (4), M=Ga; X=Cl (5), Br (6), I (7) and AlBr3(9-fluorenone)2 (3) have been prepared and characterized by NMR, IR and UV–vis spectroscopy and X-ray crystallography (1, 2, 3, 5 and 6). Complexes of MgCl2 (8), HgCl2 (9), ZrCl4 (10) and SnCl4 (11) were characterized by IR and UV–vis spectroscopy, while the unusual mixed vanadium(IV
9-芴酮配合物MX 3(9-芴酮)[M = B,X = Cl(1); M = Al,X = Cl,Br(2),I(4),M = Ga;X = Cl(5),Br(6),I(7)和AlBr 3(9-芴酮)2(3)已制备并通过NMR,IR和UV-vis光谱学和X射线晶体学进行了表征(1,2,3,5和6)。MgCl 2(8),HgCl 2(9),ZrCl 4(10)和SnCl 4(11)的红外和紫外可见光谱分析,而不寻常的混合钒(IV,V)化合物VO(Cl)(9-芴酮)2(H 2 O)(μ-O)( VOCl 2)(12)在结构上已经过表征。MX 3(9-芴酮)的溶液配体解离能通过可变温度1 H-NMR光谱测定。对于所有化合物,ΔS D都很大且为正,这是离解过程所预期的。五个结构特征化合物MX 3的结果之间的相关性(9-芴酮)(M = B,X = Cl; M = Al,X = Cl,Br; M = Ga,X