Abstract
The mass spectra of 14 different octasilasesquioxanes R8Si8O12 are presented. The well-known uniformly substituted compounds (R8=H8, Me8 or Et8) were re-examined and consequently used for comparison. The initial characterization of all the compounds examined was achieved with 1H-NMR spectroscopy. The influence of the different substituents (hydrogen, methyl, ethyl, ethyl phenyl and styrene) under electron impact ionization and collision-induced dissociation conditions was examined. The compounds with hydrogen substituents demonstrated minor cage destruction, whereas the compounds with organic substituents showed multiple losses of the substituents but no destruction of the cage system at all. The stability of the cubic Si8O12 system seems to increase further with an increasing number and size of organic substituents. The additional information gained by collision experiments was modest. All mass spectra also contained doubly charged ions.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
