Authors:
V. Logvinenko Nikolaev Institute of Inorganic Chemistry, Siberian Branch of Russian Academy of Sciences, Ac. Lavrentyev Ave. 3, Novosibirsk 90, Russia, 630090

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T. Mitkina Nikolaev Institute of Inorganic Chemistry, Siberian Branch of Russian Academy of Sciences, Ac. Lavrentyev Ave. 3, Novosibirsk 90, Russia, 630090

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V. Drebushchak Nikolaev Institute of Inorganic Chemistry, Siberian Branch of Russian Academy of Sciences, Ac. Lavrentyev Ave. 3, Novosibirsk 90, Russia, 630090

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V. Fedin Nikolaev Institute of Inorganic Chemistry, Siberian Branch of Russian Academy of Sciences, Ac. Lavrentyev Ave. 3, Novosibirsk 90, Russia, 630090

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Abstract

The thermal decomposition of hydrated cucurbit[8]uril C48H48N32O16·20H2O (CB[8]) and the inclusion compound of cucurbit[8]uril with cobalt(III) complex {trans-[Co(en)2Cl2]@CB[8]}Cl·17 H2O was studied in the inert atmosphere by TG, TM, and DSC methods. The dehydration of (C48H48N32O16)·20H2O (at 320–390 K), and the decomposition of cucurbituril itself (at 620–720 K) are accompanied by a decrease in the sample volume. The inclusion compound loses water molecules at 320–380 K; dehydration is accompanied by an increase in the sample volume. The decomposition (pyrolisis) of the anhydrous compound takes place at 620–720 K; the decomposition is forestalled by a continued increase in the sample volume with an endothermic peak (490–600 K), and only the mass loss (620–720 K) is accompanied by a decrease in the sample volume. The included guest complex does not lose amines until the decomposition process is complete; the previously observed increase in the sample volume is explained by the expansion of cavitand molecules due to a distortion of the included [Co(en)2Cl2]+ complex on heating.

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  • 2. Mitkina, TV, Sokolov, MN, Naumov, DV, Kuratieva, NV, Gerasko, OA, Fedin, VP. Jorgensen complex within a molecular container: selective encapsulation of trans-[Co(en)2Cl2]+ into cucurbit[8]uril and influence of inclusion on guest properties. Inorg Chem. 2006;45:69506955. .

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  • 3. Logvinenko, V, Drebushchak, V, Pinakov, D, Chekhova, G. Thermodynamic and kinetic stability of inclusion compounds under heating. J Therm Anal Calorim. 2007;90:2330. .

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  • 4. Logvinenko, V, Dybtsev, D, Fedin, V, Drebushchak, V, Yutkin, M. The stability of inclusion compounds under heating. Part 2. Inclusion compounds of layered zinc camphorate, linked by linear N-donor ligands. J Therm Anal Calorim. 2010;100:183189. .

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  • 5. Logvinenko, V. Stability of supramolecular compounds under heating. Thermodynamic and kinetic aspects. J Therm Anal Calorim. 2010;101:577583. .

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  • 6. Ni, R, Huang, Y, Yao, C. Thermogravimetric analysis of organoclays intercalated with the gemini surfactants. J Therm Anal Calorim. 2009;96:943947. .

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  • 7. Wang F , Zhou L, Zhou J, Gu X. Feng Y. Characterization of anticancer hypocrellin A encapsulated with silica nanoparticles. J Therm Anal Calorim. 2010. .

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  • 8. Okeke, EB, Soldatov, DV. Coordination and inclusion compounds formed by addition of quinoline (Q) or isoquinoline (Iq) to a metal(II) dibenzoylmethanate (Co, Ni, Zn, Cd). J Therm Anal Calorim. 2010;100:801810. .

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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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