J. Phys. IV France 05 (1995) C5-431-C5-438
Physico-Chemical Study of Barium (II) Dipivaloylmethanate NatureN.E. Fedotova, I.K. Igumenov, V.I. Mamatyuk and G.V. Sidorenko
Institute of Inorganic Chemistry, Lavrentieva 3, Novosibirsk 630090, Russia
A physico-chemical research of bis-(dipivaloylmethanato)baryum(II) (Ba(thd)2) has been carried out from the point of its use in CVD process as a precursor (thermal stability, immunity to external effects and etc.). The optimal conditions for synthesis, purification and storage have been found. It has been shown, that the sublimated product presents a mixture of several modifications with the main phase of a composition Ba4(th)8. At a lowered pressure the sublimated product is preserved without decomposition for a long time. In the air it is a monomer of a composition Ba(thd)2*2H2O, decomposing in the course ot time with forming a free ligand or a diketone (C8H21O2) depending on the way of purification of the initial compound.
© EDP Sciences 1995