Synthesis of mer-trichlorotris(tetrahydrofuran) tungsten(III) by intermetal chlorine atom transfer
作者:Esther Kim、Aaron L. Odom、Christopher C. Cummins
DOI:10.1016/s0020-1693(97)06157-4
日期:1998.8
The three-coordinate titanium(III) complex Ti(N[R]Ar)(3) (R = C(CD3)(2)CH3, Ar = 3,5-C6H3Me2) abstracts chlorine from WCl4 ( DME) (DME = 1,2-dimethoxyethane) in tetrahydrofuran (THF) to give yellow crystalline WCl3 (THF)(3) in 65% isolated yield. Orange TiCl(N[R]Ar)(3), which can be recycled to Ti(N[R]Ar)(3) in 73% yield by reduction with sodium amalgam, was recovered in 71% yield. WCl3 (THF), was characterized by elemental analysis, SQUID magnetic susceptibility measurements, H-1 NMR spectroscopy and single crystal X-ray crystallography. WCl3 (THF)(3) was found to be an octahedral complex possessing a meridional arrangement of ligands, as has been seen for other MCl3 (THF)(3) complexes (M = Sc, Ti, V, Cr, Mo). (C) 1998 Elsevier Science S.A. All rights reserved.