N. Fedotova, I. Igumenov, V. Mamatyuk, G. V. Sidorenko
{"title":"Physico-Chemical Study of Barium (II) Dipivaloylmethanate Nature","authors":"N. Fedotova, I. Igumenov, V. Mamatyuk, G. V. Sidorenko","doi":"10.1051/JPHYSCOL:1995550","DOIUrl":null,"url":null,"abstract":"A physico-chemical research of bis-(dipivaloylmethanato)barium(II) (Ba(thd)2) has been carried 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 been shown, that the sublimated product presents a mixture of several modifications with the main phase of a composition Ba 4 (thd) 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 *2H 2 O, decomposing in the course of time with forming a free ligand or a diketone (C 8 H 21 O 2 ) depending on the way of purification of the initial compound.","PeriodicalId":17944,"journal":{"name":"Le Journal De Physique Colloques","volume":"35 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"1995-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Le Journal De Physique Colloques","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1051/JPHYSCOL:1995550","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 1
Abstract
A physico-chemical research of bis-(dipivaloylmethanato)barium(II) (Ba(thd)2) has been carried 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 been shown, that the sublimated product presents a mixture of several modifications with the main phase of a composition Ba 4 (thd) 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 *2H 2 O, decomposing in the course of time with forming a free ligand or a diketone (C 8 H 21 O 2 ) depending on the way of purification of the initial compound.
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