NaK2.8 in pentane byproducts: NaBr, KBr; anhydrous and oxygen-free condns., addn. of B-compd. in pentane to alloy in pentane in such manner, that refluxing maintained for 5 h, refluxed for 3 h with stirring; filtered, pentane removed in vac., fractional distn.;

NaK2.8 in pentane byproducts: NaBr, KBr; anhydrous and oxygen-free condns., addn. of B-compd. in pentane to alloy in pentane in such manner, that refluxing maintained for 5 h, refluxed for 3 h with stirring; filtered, pentane removed in vac., fractional distn.;