Dinuclear oxovanadium(IV) compound with alkoxyalcohol: synthesis and structural study of {VOCl[OCH(CH3)CH2OCH3]}2
1993; Elsevier BV; Volume: 12; Issue: 20 Linguagem: Inglês
10.1016/s0277-5387(00)83076-4
ISSN1873-3719
AutoresG. Foulon, Jean-Dominique Foulon, Nadine Hovnanian,
Tópico(s)Oxidative Organic Chemistry Reactions
ResumoThe reaction between VOCl3 and 3 equivalents of sodium 1-methoxy-2-propanoxide in a mixture of toluene/1-methoxy-2-propanol leads, after removal of the salt and crystallization of the concentrated filtrate, to a vanadium(IV) compound which has been characterized by the usual techniques (elemental analysis, IR, MS, EPR, 1H and 51V NMR) and X-ray diffraction as a dimeric five-coordinate oxovanadium(IV) chloride dialkoxide, {VOCl[OCH(CH3)CH2OCH3]}2. This compound can also be obtained from VOCl3 with 1-methoxy-2-propanol in THF using ammonia gas. One of the two oxygen atoms from each methoxyalkoxo group bridges the vanadium centres yielding a planar V2O2 core. Surprisingly, a cis configuration around the VOVO ring is adopted both by oxo groups and chlorine atoms.
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