HALIDE ALKOXIDES OF SAMARIUM: III. REACTIONS OF SAMARIUM ALKOXIDES WITH ACETYL CHLORIDE AND ACETYL BROMIDE

Abstract

The reactions of samarium n-butoxide, isopropoxide, and tert-butoxide with acyl halides in different stoichiometric ratios have been studied and products of the type Sm(OR)2X, Sm(OR)X2•0.5CH3COOR and SmX3•CH3COOR (where R = C4H9n, C3H7i, or C4H9t and X = Cl or Br) have been isolated in quantitative yields. All these reactions are exothermic and the amount of heat liberated also increases with the increase in the concentration of acyl halide. These reactions have been further confirmed by the reactions with anhydrous samarium trichloride and the corresponding esters, which are also exothermic reactions. Attempts to sublime the dialkoxy monohalide derivatives of samarium were unsuccessful. The reaction of a dry current of hydrogen chloride gas on samarium isopropoxide has also been investigated.