The reaction of M(g6-1,3,5-Me3C6H3)2, M = Cr, Mo, with the tetrahalides of Groups 4 and 5 elements proceeds with the monoelectronic oxidation of the metal bis-arene to the [M(g6-Me3C6H3)2]+ cation. In the case of MX4, M = Ti, X = Cl, Br, M = V, X = Cl, and of Nb2Cl10 the reduction products are the titanium(III), vanadium(III) halides and the niobium(IV) chloride, isolated as the solvate anions [MCl4(THF)2] and [NbCl4(CH3CN)]. The reaction of the tetrachloro complexes MCl4(THF)2, M = Zr, Hf, with Cr(g6- 1,3,5-Me3C6H3)2 in THF produces the ionic [Cr(g6-1,3,5-Me3C6H3)2][MCl5(THF)], which has been characterized by single-crystal X-ray diffraction in the case of hafnium.
One-Electron Redox Reactions Involving Chromium(0) and Molybdenum(0) Bis-1,3,5-Trimethylbenzene Derivatives
PAMPALONI, GUIDO;
2007-01-01
Abstract
The reaction of M(g6-1,3,5-Me3C6H3)2, M = Cr, Mo, with the tetrahalides of Groups 4 and 5 elements proceeds with the monoelectronic oxidation of the metal bis-arene to the [M(g6-Me3C6H3)2]+ cation. In the case of MX4, M = Ti, X = Cl, Br, M = V, X = Cl, and of Nb2Cl10 the reduction products are the titanium(III), vanadium(III) halides and the niobium(IV) chloride, isolated as the solvate anions [MCl4(THF)2] and [NbCl4(CH3CN)]. The reaction of the tetrachloro complexes MCl4(THF)2, M = Zr, Hf, with Cr(g6- 1,3,5-Me3C6H3)2 in THF produces the ionic [Cr(g6-1,3,5-Me3C6H3)2][MCl5(THF)], which has been characterized by single-crystal X-ray diffraction in the case of hafnium.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
