Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Lorne M. Fell"'
Autor:
S. Vivekananda, Detlef Schröder, Johan K. Terlouw, Lorne M. Fell, Helmut Schwarz, Ragampeta Srinivas, Stephen J. Blanksby
Publikováno v:
International Journal of Mass Spectrometry. 197:105-111
The dicoordinated borinium ion, dihydroxyborinium, B(OH) 2 + is generated from methyl boronic acid CH 3 B(OH) 2 by dissociative electron ionization and its connectivity confirmed by collisional activation. Neutralization–reionization (NR) experimen
Publikováno v:
International Journal of Mass Spectrometry. :85-99
Tandem mass spectrometry based experiments on the decarbonylation products of ionized methyl-β-hydroxypyruvate (MHP) and dimethyloxalate (DMO) show that the hydrogen-bridged radical cation (HBRC) CH2O ⋯ H ⋯ OC–OCH3·+ is a stable species
Autor:
Lorne M. Fell, Graham A. McGibbon, David J. Lavorato, Helmut Schwarz, Johan K. Terlouw, Semia Sen
Publikováno v:
International Journal of Mass Spectrometry. :71-83
The decarbonylation reactions of ionized 2-acetylpyridine, 2-acetylpyrazine, and 2-acetylthiazole have been investigated using the multiple collision technique of neutralization–reionization/collision-induced dissociation mass spectrometry and rela
Publikováno v:
The Journal of Physical Chemistry A. 103:1426-1431
Ab initio molecular orbital calculations at the Gaussian-2 level of theory on a set of isodesmic, atomization, and substitution type reactions have been used to deduce the enthalpy of formation of the methoxycarbonyl ion as ΔHf298[CH3O−CO+] = 130
Publikováno v:
The Journal of Physical Chemistry A. 102:2976-2980
Ab initio molecular orbital (MO) calculations support the proposal that the key processes in the rearrangement of HOCH2CH2OH•+ and HOCH2CH(CH3)OH•+ (ionized 1,2-ethanediol and 1,2-propanediol) are ...
Publikováno v:
Canadian Journal of Chemistry. 76:335-349
The intriguing gas-phase ion chemistry of β-hydroxypyruvic acid (HPA), HOCH2C(==O)COOH, has been investigated using tandem mass spectrometry (metastable ion (MI) and (multiple) collision-induced dissociation (CID) experiments, neutralization-reioniz
Publikováno v:
International Journal of Mass Spectrometry and Ion Processes. :179-194
Tandem mass spectrometry based experiments on commercial oxalacetic acid (OAA) samples confirm the indirect evidence from the elegant study of Flint et al. (J. Org. Chem. 57 (1992) 7270) that solid OAA exists solely in the (Z)-enol form of HOOCC(H)
Autor:
Paul J.A. Ruttink, Muriel Rempp, Lorne M. Fell, A. Milliet, Johan K. Terlouw, Peter C. Burgers
Publikováno v:
International Journal of Mass Spectrometry and Ion Processes. :291-308
The fascinating unimolecular chemistry of ionized 1,2-propanediol, CH 3 C(H)OHCH 2 OH ·+ , 1 , has been re-examined using computational chemistry (ab initio MO and density functional theories) in conjunction with modern tandem mass spectrometric and
Publikováno v:
Journal of the American Society for Mass Spectrometry. (9):1545-1551
This paper demonstrates improved nanoflow LC-MS performance on a QqTOF instrument with the incorporation of a heated nanoflow interface (particle discriminator) and a nebulizer assisted sprayer. It is shown that the nebulizer broadens the usable rang