Synthesis and characterization of some chloride alkoxides of chromium(III) and their addition complexes

Abstract

Reactions of CrCl₃ · 3THF with sodium alkoxides in 1:1 molar ration in the corresponding alcohols yield soluble dichloride monoalkoxides with the general formula, CrCl₂(OR) · 2ROH, where R = Me Et, Prⁱ or Buⁿ. On heating under vacuum these products tend to lose adduct molecules leaving derivatives with the formula, CrCl₂(OR). The latter are insoluble in hydrocarbons but dissolve in alcohols from which bis-adducts can be isolated again. A number of other coordination complexes, CrCl₂(OR) · 2L (where L = pyrdine, β-picoline or pyridine N-oxide) have also been synthesized and characterized.