Dihalogenovanadium(IV) 5,7,12,14-tetramethyldibenzo[b,i][1,4,7,11]tetraazacyclodecinato complexes: Spectroscopic characterization and synthetic applications

作者：Schumann H

来源：Polyhedron, 1996, 15(5-6): 845-850.

DOI：10.1016/0277-5387(95)00337-8

Products from the reaction of (C22H22N4)V=O (C22H22N4 = deprotonated N-4 macrocyclic ligand 5,7,12,14-tetramethyldibenzo[b,i][1,4,7,11]tetraazacyclodecine, H(2)L) with halogenating agents depend on their nature. Stirring with two equivalents of oxalyl or thionyl dihalide (X, halide = Cl, Br) afforded quantitative conversion to the very sensitive complexes LVX(2), while in the presence of HX (X = F-Br), ionic salts of the type [(HL)VX(2)]X) were isolated. Deprotonation of the latter compounds with nitrogen bases afforded the former LVX(2) complexes. All complexes have been isolated and characterized by ESR, IR and UV-vis spectroscopy. Reaction of LVX(2) with H2S and H2NC6H5 . B(C2H5)(3) led to complexes of the type LV=Y (Y = S and N C6H5 . B(C2H5)(3)).

• 出版日期1996-3