Measurements are reported of the electron capture (EC) chemistry of CBrCl3 in a buffer gas at atmospheric pressure over the temperature range 30鈥 250掳C. These measurements are made with an atmospheric pressure ionization mass spectrometer (APIMS) and with a recently developed atmospheric pressure...
Hai MinhSchool of Chemistry, University of New South Wales, P.O. Box. 1, Kensington, NSW 2033, AustraliaDerek NelsonSchool of Chemistry, University of New South Wales, P.O. Box. 1, Kensington, NSW 2033, AustraliaJohn Wiley & Sons, LtdOrganic Mass Spectrometry...
Journal of Heterocyclic ChemistryTsiamis, C.; Tsoungas, P. G. The Electron-Impact Mass Spectra of 1,2-Benzisoxazoles N-Oxides. J. Heterocyclic Chem. 1985, 22, 687-691.Tsiamis, C.; Tsoungas, P. G. J. Heterocyclic Chem. 1985 , 22 , 687–691....
1). Kinetic effects, on the one hand, refer to changes in the reaction rate due to alterations in the reaction mechanism or kinetics, by modifying the rate of electron transfer or the activation energy required for the reaction to occur. Mass transport effects, on the other hand, refer to...
In subject area: Chemistry Electron impact mass spectrometry (EI-MS) involves the bombardment of the vaporized metabolite by high-energy electrons (0–100eV), producing a molecular radical cation (M+·) having a mass equivalent to the molecular weight of the compound. ...
Tandem mass spectra capture fragmentation patterns that provide key structural information about molecules. Although mass spectrometry is applied in many areas, the vast majority of small molecules lack experimental reference spectra. For over 70 years,
electron affinity energy (abbr. A.E.) 屏蔽效应 electronic shielding(screening) 原子轨道 atomic orbital 电子云 electron cloud 电子亚层 sub-shell 能层layer 能级energy level 电子排布 electron configuration 电子云重叠 shell overlap 洪特规则 Hund’s rule ...
The resulting odd-electron species undergo fragmentation pathways driven by radical chemistry, where the N–Cα backbone bonds are cleaved to generate c- and z-type fragment ions (Huang & McLuckey, 2010). ETD generally provides more extensive sequence information for larger molecules and preserves ...
ion-flurane chemistry occurring in reaction region, a HiKE-IMS was coupled to a Time-of-Flight Mass Spectrometer so that the m/z values of both the reagent and product ions that are contained within the various ion mobility peaks observed could be identified with a high level of confidence....
approach offers not only the capability of resolving hundreds of lipid molecules, but also a new tool for understanding spatial–biochemical tissue architecture with cellular specificity, transforming how we study brain chemistry just as how spatial transcriptomics transforms the determination of gene ...