Physico-Chemical Study of Barium (II) Dipivaloylmethanate Nature
نویسندگان
چکیده
A physico-chemical research of bis-(dipivaloylmethanato)barium(II) (Ba(thd)2) has been carricd out from the point of its use in CVD processes as a precursor (thermal stability, immunity to external effects and etc.). The optimal conditions for synthesis, purification and storage have been found. It has bee11 shown. that the sublimated product presents a mixture of several modifications with the main phase of a composition Ba4(thd)s. At a lowered pressure lhc sublimated product is preserved without decorupositiol~ Tor a long time. In the air it is a monomer of a composition Ba(thd)2*2H2O. decomposing In the course of timc with forming a free ligand or a diketone ( C S H ~ ~ O ~ ) depending on the way of purification of l l ~ e ~nitial compound.
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