Organic derivatives of antimony. IV. Association of alkoxy and chloroalkoxy derivatives of antimony (III) and (V)

Abstract

1. Chlorotetramethoxyantimony was obtained by the action of acetyl chloride on pentamethoxyantimony. 2. Triethoxy-, tripropoxy-, and triisobutoxyantimony are partially associated under conditions of cryoscopy in cyclohexane, while triisopropoxy- and tri-tert-butoxyantimony are monomeric. Under ebullioscopy conditions in CCl4, 2-ethoxy-4-methyl-1, 3,2-dioxastibinane exists in a monomeric form. 3. According to the data of cryoscopic and ebullioscopic measurements, pentaethoxyantimony exists in benzene in a dimeric form. Dimers of tetrachloromethoxy-, trichlorodimethoxy-, and dichlorotrimethoxyantimony are partially dissociated in benzene.