Physico-Chemical Study of Barium (II) Dipivaloylmethanate Nature

N.E. Fedotova; I.K. Igumenov; V.I. Mamatyuk; G.V. Sidorenko

doi:doi:10.1051/jphyscol:1995550

Numéro		J. Phys. IV France Volume 05, Numéro C5, Juin 1995 Proceedings of the Tenth European Conference on Chemical Vapour Deposition


Page(s)		C5-431 - C5-438
DOI		https://doi.org/10.1051/jphyscol:1995550

Proceedings of the Tenth European Conference on Chemical Vapour Deposition

J. Phys. IV France 05 (1995) C5-431-C5-438
DOI: 10.1051/jphyscol:1995550

Physico-Chemical Study of Barium (II) Dipivaloylmethanate Nature

N.E. Fedotova, I.K. Igumenov, V.I. Mamatyuk and G.V. Sidorenko

Institute of Inorganic Chemistry, Lavrentieva 3, Novosibirsk 630090, Russia

Abstract
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.