Sur le repérage, par spectrométrie de masse, des formes isomères cis et trans dans les dialcoylcyclanes.
Fiche du document
1962
Copyright PERSEE 2003-2023. Works reproduced on the PERSEE website are protected by the general rules of the Code of Intellectual Property. For strictly private, scientific or teaching purposes excluding all commercial use, reproduction and communication to the public of this document is permitted on condition that its origin and copyright are clearly mentionned.
Sujets proches
Transsexual people Transsexualism--Patients Transexuals Trans-identified people Transgender-identified people Transgendered people Trannies Transpeople TG people Trans people Transgenders TGs (Transgender people) Transsexual males FTMs (Female-to-male transsexuals) Transmales Transsexual men F-t-Ms (Female-to-male transsexuals) Female transsexuals Trans men Transmen FTM transsexuals F2Ms (Female-to-male transsexuals) Transgenristes Transgendéristes Trans Transidentité Transgendristes Transgénéristes Pairs Trans Transsexuels masculins Conversion femme vers hommeCiter ce document
Paul Natalis, « Sur le repérage, par spectrométrie de masse, des formes isomères cis et trans dans les dialcoylcyclanes. », Bulletins de l'Académie Royale de Belgique, ID : 10.3406/barb.1962.70802
Métriques
Partage / Export
Résumé
Mass spectra of 30 pairs of cis-trans cyclanic stereoisomers have been investigated. In 18 pairs of isomers for which cistrans assignment is known, relative abundance of molecular ions, calculated as a fraction of total ionic current, appears to be smaller in cis isomers than that relative to the corresponding trans isomers. This result can be used for cis-trans assignment of unknown pairs of such isomers. This has been done in the present case of 11 pairs of such cyclanic isomers ; however there is a case where the situation is doubtful. Specific behaviour of cis and trans cyclanic stereoisomers is briefly discussed in connection with thermodynamic stability and steric hindrance in those compounds.