Synthesis and crystal structures of chlorometalates [M = V(III), Mo(V)]

[(THF)(2)LiCl2VCl2(THF)(2)] (1) and [Li(THF)(4)][OMOCl4(THF)] (2) can be pr epared by the reactions of VCl3 with LiCl in THF and of Li(H)(PBu)-Bu-t wit h OMoCl4 in THF, respectively. 1 and 2 were characterized by IR spectroscop y, MS spectrometry (2) and X-ray crystallography. 1 can be obtained in two modifications depending on the temperature of crystallization. At -30 degre esC a triclinic form, 1a, was isolated from THF solution with one unique mo lecule per asymmetric unit. However, at 20 degreesC, 1b crystallized in the monoclinic space group P2/c. It possesses four independent molecules per a symmetric unit. According to the structure analyses 1 consists of a dinucle ar complex with a planar LiCl2V four-membered ring while 2 consists of sepe rate ions [Li(THF)4](+) and [OMOCl4(THF)](-).