Szerkezet és retenció kapcsolata a hidrazonok gázkromatográfiájában

Translated title of the contribution: Structure-retention relationship in the gas chromatography of hydrazones

Miklós Görgényi, Zoltán Király, Tamás Körtvélyesi, Herman Van Langenhove, László Seres

Research output: Contribution to journalArticle

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Abstract

Several 2,4-dinitrophenylhydrazones (DNPHs), N,N-dialkylhydrazones (DAH) and N,N-dimethylhydrazones (DMH) were synthesized and their Kovats retention indices (I) determined. DAHs are one of the rare examples where electronic structures of structural isomers differ. This is reflected in the retention relations. Retention indices for all DAHs can be estimated from the boiling points. Homomorphic factors and van der Waals surface area and volume (SW,VW) can also be used to predict retention indices for both ketone and aldehyde DMHs, DAHs separately. The Ioxo values of analogous oxo compounds and molecular parameters (SW, C=N-N bond angle, Θ, and electron density, dC) describe the retention behaviour of both classes of DMHs in a single correlation equation. The oxo homomorphic factors can be used for the prediction of the retention indices of DNPHs.

Original languageHungarian
Pages (from-to)576-581
Number of pages6
JournalMagyar Kemiai Folyoirat, Kemiai Kozlemenyek
Volume103
Issue number12
Publication statusPublished - Dec 1 1997

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ASJC Scopus subject areas

  • Chemistry(all)

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