Intramolecular Halogen Atom Coordinated H Transfer via Ion-Neutral Complex in the Gas Phase Dissociation of Protonated Dichlorvos Derivatives

2017 ◽  
Vol 28 (10) ◽  
pp. 2246-2254 ◽  
Author(s):  
Xiaoping Zhang ◽  
Shuai Cheng
Keyword(s):  
Gas Phase ◽  
Halogen Atom ◽  
Neutral Complex ◽  
Gas Phase Dissociation

Kinetic Resolution ofd,l-Amino Acids Based on Gas-Phase Dissociation of Copper(II) Complexes

1999 ◽  
Vol 71 (19) ◽  
pp. 4427-4429 ◽  
Author(s):  
W. Andy Tao ◽  
Duxi Zhang ◽  
Feng Wang ◽  
Peter D. Thomas ◽  
R. Graham Cooks
Keyword(s):  
Amino Acids ◽  
Gas Phase ◽  
Kinetic Resolution ◽  
Gas Phase Dissociation

scholarly journals Ambulation of Incipient Proton during Gas-Phase Dissociation of Protonated Alkyl Dihydrocinnamates

2015 ◽  
Vol 80 (19) ◽  
pp. 9468-9479 ◽  
Author(s):  
Sihang Xu ◽  
Yong Zhang ◽  
Ramu Errabelli ◽  
Athula B. Attygalle
Keyword(s):  
Gas Phase ◽  
Gas Phase Dissociation

scholarly journals Gas‒phase reactions of NO+with Glu and γ‒Glu–Met

2000 ◽  
Vol 14 (4) ◽  
pp. 247-257 ◽  
Author(s):  
H. Wincel ◽  
R. H. Fokkens ◽  
N. M. M. Nibbering
Keyword(s):  
Gas Phase ◽  
Carbonyl Oxygen ◽  
Nitroso Group ◽  
Gas Phase Reactions ◽  
Neutral Complex ◽  
Electrophilic Attack ◽  
Ionisation Mass Spectrometry ◽  
Carboxylic Groups ◽  
Molecule Interaction ◽  
Nitrosonium Ion

The reactivity of the nitrosonium ion, NO+, with the amino acid Glu and the dipeptide γ‒Glu–Met in the gas phase has been investigated using the combination of chemical ionisation mass spectrometry and MS/MS. It is shown that NO+reacts efficiently with both Glu and Glu–Met leading to the formation of the nitroso‒group containing ions atm/z159 and 288.The formation ofm/z159, (GluNO‒18)+, is rationalized by a mechanism involving an electrophilic attack of NO+upon the carbonyl oxygen atom of one of the carboxylic groups of Glu and the N‒terminal carboxylic group of Glu–Met leading to the neutral losses of H2O and Met, respectively. The unimolecular decompositions of the metastable and collisionally activatedm/z159 ions lead primarily to the elimination of the neutral species HNO (major) and the (Glu‒18) residue (minor). The formation of them/z288 ions can be described by a mechanistic scheme which involves the ion‒molecule interaction ofm/z159 with Glu and Glu–Met and subsequent losses of H2O and Met, respectively. Unimolecular and collisionally activated dissociations ofm/z288 suggest the formation of the proton‒bridged ion‒neutral complex [(GluNO‒18)···H+···(Glu‒18)].

scholarly journals Probing the Lipid Annular Belt by Gas-Phase Dissociation of Membrane Proteins in Nanodiscs

2015 ◽  
Vol 128 (2) ◽  
pp. 560-564 ◽  
Author(s):  
Michael T. Marty ◽  
Kin Kuan Hoi ◽  
Joseph Gault ◽  
Carol V. Robinson
Keyword(s):  
Membrane Proteins ◽  
Gas Phase ◽  
Gas Phase Dissociation
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