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Vapour pressure of some phthalocyanines

P. P. SEMYANNIKOV

Institute of Inorganic Chemistry, Lavrentiev Avenue 3, Novosibirsk 630090, Russia

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T. V. BASOVA

Institute of Inorganic Chemistry, Lavrentiev Avenue 3, Novosibirsk 630090, Russia

Corresponding author: Institute of Inorganic Chemistry, Lavrentiev Avenue 3, Novosibirsk 630090, Russia.

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V. M. GRANKIN

Institute of Inorganic Chemistry, Lavrentiev Avenue 3, Novosibirsk 630090, Russia

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I. K. IGUMENOV

Institute of Inorganic Chemistry, Lavrentiev Avenue 3, Novosibirsk 630090, Russia

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https://doi.org/10.1002/(SICI)1099-1409(200004/05)4:3<271::AID-JPP205>3.0.CO;2-4Cited by:23 (Source: Crossref)

Abstract

Mass spectrometric studies of the composition of the gaseous phase under solid compounds of free phthalocyanine (H₂Pc) and its complexes with aluminium (AlClPc, AlFPc, (AlPc)₂O) and copper (CuPc) were performed in the temperature range up to 700 °C. It has been shown that the phthalocyanines sublime in the form of monomers, excluding one aluminium complex. All phthalocyanines under investigation sublime without thermal decomposition until 700 °C. The vapour pressure of these phthalocyanines was determined as a function of temperature by the Knudsen effusion method, in which the rate of effusion of the equilibrium vapour through a small orifice was measured. The thermodynamic parameters of the sublimation process for phthalocyanies were calculated.

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