Alkali-metal complexes. Part IV. Investigation of diethyl β-ketopropylphosphonate, diethyl phenacylphosphonate, and phenacyldiphenylphosphine oxide as ligands, and synthesis of magnesium, uranyl, and lithium complexes of phenacyldiphenylphosphine oxide

Abstract

The compounds (EtO)₂P(O)·CH₂·C(O)R (R = Me in diethyl β-ketopropylphosphonate, R = Ph in diethyl phenacylphosphonate) do not form complexes with alkali-metal halides. The sodium salt of (EtO)₂P(O)·C·C(O)Me reacts with o-nitrophenol, 8-hydroxyquinoline, or isonitrosoacetophenone to give the corresponding sodium salt and free diethyl β-ketopropylphosphonate.

Phenacyldiphenylphosphine oxide, Ph₂P(O)·CH₂·C(O)Ph, forms (1 : 1) complexes with LiBr and Lil and a (3 : 1) complex with Mg(ClO₄)₂; in these it is probably chelated. It does not react with salts of larger-radius alkali metals. It forms a (2 : 1) complex with UO₂(NO₃)₂ in which it is unidentate.