Výsledky vyhledávání - "Richard Robbiani"

Eliminierungsreaktionen an Kationen in Gasphase II Essigsäureeliminierung aus Androstanylacetaten

Autor: J. Seibl, Richard Robbiani

Publikováno v: Helvetica Chimica Acta. 57:674-684

Elimination of acetic acid from the molecular ions of the epimeric androstanylacetates is investigated applying specific 2H-labelling and analysis of metastable transitions. Only 17β-androstanylacetate eliminates acetic acid in a 1,2-fashion to an e

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::fc44f16e6155e174f1775f29d75e331c
https://doi.org/10.1002/hlca.19740570320

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Automatic acquisition and shape analysis of metastable peaks

Autor: Richard Robbiani, Th. Kuster, J. Seibl, H. Mändli

Publikováno v: International Journal of Mass Spectrometry and Ion Physics. 31:57-64

A method for automatic acquisition and evaluation of metastable peaks due to transitions in the first field-free region of a double focussing mass spectrometer is presented. The data are acquired by computer-controlled repetitive scanning of the acce

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c2fe2a38bf67ce2c6b6682278c17b950
https://doi.org/10.1016/0020-7381(79)80104-7

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Vergleichende Untersuchung von Reaktivitäten und Ionenstrukturen beim monomolekularen Abbau isomerer Hydroxyzimtsäuremethylester unter Elektronenbeschuss

Autor: Thomas Kuster, Richard Robbiani, Hugo Mändli, J. Seibl

Publikováno v: Helvetica Chimica Acta. 61:1017-1024

Comparative investigation of reactivities and ion structures upon electron impact induced degradations of the isomeric hydroxy cinnamic acid methyl esters By analysis of energy release data in metastable peaks it is shown that m- and p-hydroxy cinnam

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f125e1e4c61b9e6be409a6ff4b416590
https://doi.org/10.1002/hlca.19780610311

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Elimination reactions of ions in the gas phase. V—elimination of water in hydroxybornanes and related compounds

Autor: D. Kovačević, Richard Robbiani, J. Seibl, A. Fraefel, H. Bührer, H. Mändli

Publikováno v: Organic Mass Spectrometry. 13:275-279

Results of an investigation of deuterium labelled methylated norborneols and dihydrocarveols are presented to show that the 1,2 elimination of water in borneol and isoborneol is triggered by an initial ring cleavage reaction. Other eliminations of wa

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::794eb51fa9b31f4c7bc0638149c31b8a
https://doi.org/10.1002/oms.1210130509

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