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Mass Spectrometric Investigation of Tautomers of N-Substituted 4-Iminopentan-2-ones in the Gas Phase

Urbaniak W., Frański R., Gierczyk B.

Polish Journal of Chemistry

2001

Vol. 75, nr 3

429-441

Mass fragmentation of 4-iminopentan-2-one N-substituted with organosilicon group suggests that in the gas phase upon electron ionization (EI) conditions only 4-imino- 2-keto tautomer occurs. The simultaneous occurrence of 4-aminopent-3-en-2-keto tautomeric form was ruled out on the basis of mass fragmentation of some alkylaromatic derivatives of 4-aminopent-3-en-2-one.

Mass Spectrometric Behavior of Acyclic polydentate Ligands: 4-(Arylimino)pentan-2-ones

Płaziak A., Urbaniak W., Frański R., Gierczyk B.

Polish Journal of Chemistry

1999

Vol. 73, nr 8

1301-1313

Electron ionization (El) mass spectra of some aromatic derivatives of 4-iminopentan-2-one are discussed. Their mass fragmentation suggests the occurrence in the gas phase of 4-imino-2-keto tautomer only.

Mass spectrometric behaviour of alkali and alkaline earths acetylacetonates

Płaziak A.S., Urbaniak W., Frański R., Gierczyk B.

Polish Journal of Chemistry

1998

Vol. 72, nr 3

504-510

EI spectra of acetylacetone, alkali acetylacetonates and acetylacetonates of alkaline earths of formulae M(I)(acac) and M(II)(acac)2 (where M(I)=LI, Na, K, Rb, Cs, M(II)=Be, Mg, Ca, Sr, acac= acetylacetonate ligand) were ibtained using mass spectrometry. Ligand-ions were observed in each spectrum. Metal cations were present only for the elements of group I. The detection of polymetric species of general formula [M(x)(acac)(y)](+) supports the conclusion, that polymeric species of acetylacetonates of group I and II are commonly present in the gas phase.