Mass Spectral Fragmentation Patterns of Some Substituted 10,Ll-Dihydro-5H-Dibenzo[A,D] Cycloheptene-5-One and 9,10-Dihydro-4H-Benzo [4,5]Cyclohepta[1,2-B]Thiophene-4-One

Autor:	Ivica Cepanec, Zvonimira Mikotić-Mihun, Miaden Lirvić, Jasmina Ranilović, Grace Karminski-Zamola
Rok vydání:	1999
Předmět:	Chemistry Stereochemistry Polyatomic ion Tropolone Atomic and Molecular Physics and Optics Analytical Chemistry chemistry.chemical_compound Radical ion Fragmentation (mass spectrometry) Mass spectrum Thiophene Molecule Cycloheptene Spectroscopy
Zdroj:	Spectroscopy Letters. 32:601-613
ISSN:	1532-2289 0038-7010
DOI:	10.1080/00387019909350009
Popis:	Electron impact mass spectra of some substituted 10,11-dihydro-5H-dibenzo[a,d]cyclohepten-5-one and 9,10-dihydro-4H-benzo[4,5] cyclohepta[1,2-b] thiophene-4-one have been recorded and the identity of various ions in the mass spectra established. Substituted dibenzosuberones (2-6) exhibit one main fragmentation route, which include the elimination of the tropolone molecule from the dibenzosuberone fragment cation. Their monothiophene analogues(7-11) exhibit characteristic CO elimination from the molecular ion and formation of corresponding naphtho[1,2-b]thiophene radical cation which after elimination of CS or HCS from the thiophene nuclei give rise to the benzotrophyne radical cation.
Databáze:	OpenAIRE
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