Interaction of dipivaloylmethanates of neodymium and erbium with pivalic acid

Solid products formed in the systems LnDpm3-nHPiv-hexane (Ln = Er, Nd; HDpm-dipivaloylmethane, HPiv-pivalic acid, n = 1, 2, 3) were characterized by the methods of elementary, X-ray phase and thermal analyses and infrared spectroscopy. It is ascertained that considerable differences in the behaviour of systems with ErDpm3 and NdDpm3 are pronounced when small amounts of HPiv (not more than 1 equivalent) are added. Increase in the part of HPiv in both cases gradually results in total substitution of β-diketonate-ion and transformation of the complex into pivalate