Yo-Sep Min

Alkaline-Earth Metal Complexes with Pivaloylacetone

Pivaloylacetonates of alkaline-earth elements with composition M(Pa)2 · nH2O (n = 1, M = Sr, Ca; n = 0, 2, M = Ba) were synthesized and studied by IR and thermal analysis; their solubilities and volatility were estimated. It was found that the volatility changes regularly in the series M(Acac)2–M(Pa)2–M(Thd)2 (HAcac is acetylacetone, HThd is dipivaloylmethane). The replacement of one methyl radical by the tert-butyl radical when going from acetylacetonates to pivaloylacetonates was shown to noticeably increase the volatility only for Sr(Pa)2 · H2O. Complexes of barium pivaloylacetonate with tetraglyme and о-phenanthroline were synthesized and characterized.