scholarly journals Infrared Signature of Structural Isomers of Gas–Phase M+(N2O)n (M = Cu, Ag, Au) Ion–Molecule Complexes

2017 ◽  
Vol 121 (40) ◽  
pp. 7565-7571 ◽  
Author(s):  
Ethan M. Cunningham ◽  
Alexander S. Gentleman ◽  
Peter W. Beardsmore ◽  
Andreas Iskra ◽  
Stuart R. Mackenzie
Keyword(s):  
Gas Phase ◽  
Structural Isomers ◽  
Infrared Signature ◽  
Ion Molecule Complexes

scholarly journals Structural isomers and low-lying electronic states of gas-phase M+(N2O)n (M = Co, Rh, Ir) ion–molecule complexes

2019 ◽  
Vol 21 (26) ◽  
pp. 13959-13967 ◽  
Author(s):  
Ethan M. Cunningham ◽  
Alexander S. Gentleman ◽  
Peter W. Beardsmore ◽  
Stuart R. Mackenzie
Keyword(s):  
Density Functional Theory ◽  
Nitrous Oxide ◽  
Gas Phase ◽  
Density Functional ◽  
Electronic States ◽  
Structural Isomers ◽  
Functional Theory ◽  
Phase Group ◽  
Ion Molecule Complexes ◽  
Metal Ligand

The structures of gas-phase group nine cation–nitrous oxide metal–ligand complexes, M+(N2O)n (M = Co, Rh, Ir; n = 2–7) have been determined by a combination of infrared photodissociation spectroscopy and density functional theory.

scholarly journals Infrared Spectroscopy of Gas-Phase M+(CO2)n (M = Co, Rh, Ir) Ion–Molecule Complexes

2017 ◽  
Vol 121 (1) ◽  
pp. 133-140 ◽  
Author(s):  
Andreas Iskra ◽  
Alexander S. Gentleman ◽  
Aras Kartouzian ◽  
Michael J. Kent ◽  
Alastair P. Sharp ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
Gas Phase ◽  
Ion Molecule Complexes

scholarly journals Enantioselective supramolecular devices in the gas phase. Resorcin[4]arene as a model system

2012 ◽  
Vol 8 ◽  
pp. 539-550 ◽  
Author(s):  
Caterina Fraschetti ◽  
Matthias C Letzel ◽  
Antonello Filippi ◽  
Maurizio Speranza ◽  
Jochen Mattay
Keyword(s):  
Gas Phase ◽  
Chiral Recognition ◽  
Experimental Approach ◽  
Biologically Active ◽  
Computational Techniques ◽  
Ligand Displacement ◽  
Artificial Receptor ◽  
Ion Molecule Complexes ◽  
Supramolecular Devices ◽  
Diastereomeric Complexes

This review describes the state-of-art in the field of the gas-phase reactivity of diastereomeric complexes formed between a chiral artificial receptor and a biologically active molecule. The presented experimental approach is a ligand-displacement reaction carried out in a nano ESI-FT-ICR instrument, supported by a thermodynamic MS-study and molecular-mechanics and molecular-dynamics (MM/MD) computational techniques. The noncovalent ion–molecule complexes are ideal for the study of chiral recognition in the absence of complicating solvent and counterion effects.

The gas-phase RnX–NO+ (X=O, N, S) cations: nitroso onium cations versus ion–molecule complexes

1998 ◽  
Vol 283 (5-6) ◽  
pp. 357-362 ◽  
Author(s):  
Minh Tho Nguyen ◽  
Driss Lahem ◽  
Robert Flammang
Keyword(s):  
Gas Phase ◽  
Ion Molecule Complexes

Gas Phase Ionization of Toluene: Benzylium Versus Tropylium Pathway

2019 ◽  
Vol 9 (2) ◽  
pp. 138-150
Author(s):  
Thao Nguyen ◽  
Mario Aparicio ◽  
Mahmoud A. Saleh
Keyword(s):  
Gas Phase ◽  
Radical Cation ◽  
Collision Energy ◽  
New Technologies ◽  
Accurate Mass ◽  
Gas Chromatography Mass Spectrometry ◽  
Hydrogen Atoms ◽  
Structural Isomers ◽  
Acetylene Molecule ◽  
High Resolution Gas Chromatography

Aim: In this investigation, we used accurate mass high-resolution gas chromatography mass spectrometry to study the gas phase carbocations rearrangements and fragmentation of toluene and halo-toluenes as well as their deuterium labeled compounds. Objective: Accurate mass of selected ions from ionization of toluene and related compounds revealed that the initially formed radical cation C7H8 +. does not rearrange to tropylium radical cation contradicting published literature. Methods: When the toluene radical cation was purely selected, it was found to lose a free radical (hydrogen atom) at collision energies greater than 5 eV and forming benzylium or tropylium cation C7H7 + (m/z = 91), with no other fragmentations. Results: The resulting cation at collision energy greater than 20 eV fragmented by losing acetylene or ethylene or allene molecule to form C5H5 + (m/z = 65), C5H3 + (m/z = 63) or C4H3 + (m/z = 51) respectively. Purely selected C5H5 + cation at collision energy greater than 30 eV lost acetylene molecule and formed C3H3 + (m/z =39). Conclusion: In this investigation toluene, halotoluene and their deuterated derivatives (structural isomers) were found to ionize in the gas phase with isomer retention. Historically, it has been suggested that the seven carbons and hydrogen atoms would become indistinguishable. However, this should be revised in the light of new technologies.

Sign in / Sign up

Export Citation Format

Share Document