Thermogravimetry of metal chelates of 1,1,1-trifluoropentane-2,4-dione in a flow of helium and helium containing ligand vapor

✍ Scribed by Norio Matsubara; Tooru Kuwamoto

• Book ID: 104100288
• Publisher: Elsevier Science
• Year: 1984
• Tongue: English
• Weight: 488 KB
• Volume: 161
• Category: Article
• ISSN: 0003-2670
• DOI: 10.1016/s0003-2670(00)85781-5

✦ Synopsis

Thermogravimetry of 22 metal chelates of l,l,l-trifluoropentane-2,4-dione, H(tfa) in a flow of helium and helium containing H(tfa) vapor is described. Samples were placed in an inserted tube in the inlet port of a gas chromatograph and heated stepwise. The presence of H( tfa) vapor in the helium flow was very effective in suppressing thermal dissociation of hydrated tfa chelates, which decomposed in a helium flow but could be completely vaporized, after dehydration, in a flow of helium containing H(tfa) vapor. The relationship between the volatility and the structure of the tfa chelates is discussed. Results obtained by the proposed method and with a conventional thermobalance are compared.