Journal of Thermal Analysis and Calorimetry
Volume/Issue:
Volume 92: Issue 3
Thermal properties of hafnium(IV) and zirconium(IV) β-diketonates
Authors:
Ksenia Zherikova Nikolaev Institute of Inorganic Chemistry SB RAS Novosibirsk 630090 Russia

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Natalia Morozova Nikolaev Institute of Inorganic Chemistry SB RAS Novosibirsk 630090 Russia

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Ludmila Zelenina Nikolaev Institute of Inorganic Chemistry SB RAS Novosibirsk 630090 Russia

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S. Sysoev Nikolaev Institute of Inorganic Chemistry SB RAS Novosibirsk 630090 Russia

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Tamara Chusova Nikolaev Institute of Inorganic Chemistry SB RAS Novosibirsk 630090 Russia

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I. Igumenov Nikolaev Institute of Inorganic Chemistry SB RAS Novosibirsk 630090 Russia

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Pages:
729–734
Online Publication Date:
02 Jul 2008
Publication Date:
01 Jun 2008
Article Category:
Research Article
DOI:
https://doi.org/10.1007/s10973-008-9027-x
Keywords:
β-diketonates; DSC; hafnium(IV); TG; thermodynamic characteristics; vapor pressure; zirconium(IV)
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Abstract  

Five volatile hafnium(IV) and zirconium(IV) β-diketonates: hafnium(IV) acetylacetonate, hafnium(IV) trifluoroacetylacetonate, hafnium(IV) pivaloyltrifluoroacetonate, hafnium(IV) 2,2,6,6-tetramethylheptane-3,5-dionate and zirconium(IV) 2,2,6,6-tetramethylheptane-3,5-dionate were obtained, purified and identified. Thermal behavior of solid compounds was investigated by thermogravimetry (TG) and differential scanning calorimetry (DSC) in helium atmosphere and in vacuum. DSC method was also used for definition of thermodynamic characteristics of melting processes. Using the static method with quartz membrane zero-manometer and the flow method the temperature dependencies of saturated vapor pressure for hafnium(IV) complexes was obtained. The standard thermodynamic characteristics ΔHT0 and ΔST0 of sublimation and evaporation processes were calculated from the temperature dependences of saturated vapor pressure.

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Cover Journal of Thermal Analysis and Calorimetry
Journal of Thermal Analysis and Calorimetry
Print ISSN:
1388-6150
Online ISSN:
1572-8943

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation		 1969
Volumes
per Year		 1
Issues
per Year		 24
Founder Akadémiai Kiadó
Founder's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

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