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Vapor pressure of some volatile iridium(I) compounds with carbonyl, acetylacetonate and cyclopentadienyl ligands

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Abstract

Volatile compounds of iridium(I): (acetylacetonato)(1,5-cyclooctadiene)iridium(I) Ir(acac)(cod), (methylcyclopentadienyl) (1,5-cyclooctadiene)iridium(I) Ir(Cp’)(cod), (pentamethylcyclopentadienyl)(dicarbonyl) iridium(I) Ir(Cp*)(CO)2 and (acetylacetonato)(dicarbonyl)iridium(I) Ir(acac)(CO)2 were synthesized and identified by means of element analysis, NMR-spectroscopy, mass spectrometry.

Thermal properties in solid phase for synthesized iridium(I) complexes were studied by means of thermogravimetric analysis in inert atmosphere (He). By effusion Knudsen method with mass spectrometric registration of gas phase composition the temperature dependencies of saturated vapor pressure were measured for iridium(I) compounds and the thermodynamic characteristics of vaporization processes enthalpy ΔH T* and entropy ΔS 0T were determined. The energy of intermolecular interaction in the crystals of complexes was calculated.

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Authors and Affiliations

  1. Nikolaev Institute of Inorganic Chemistry SB RAS, Lavrentiev av., 3, 630090, Novosibirsk, Russia

    N. B. Morozova, P. P. Semyannikov, S. V. Trubin, P. P. Stabnikov, A. A. Bessonov, K. V. Zherikova & I. K. Igumenov

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  1. N. B. Morozova
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  2. P. P. Semyannikov
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  3. S. V. Trubin
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  4. P. P. Stabnikov
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  5. A. A. Bessonov
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  6. K. V. Zherikova
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  7. I. K. Igumenov
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Correspondence to N. B. Morozova.

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Morozova, N.B., Semyannikov, P.P., Trubin, S.V. et al. Vapor pressure of some volatile iridium(I) compounds with carbonyl, acetylacetonate and cyclopentadienyl ligands. J Therm Anal Calorim 96, 261–266 (2009). https://doi.org/10.1007/s10973-008-9551-8

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  • DOI: https://doi.org/10.1007/s10973-008-9551-8

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