Organic molecules as well as metal complexes may exist as several geometric isomers1
which display distinct physical properties and chemical reactivities. A molecule containing …

The fragmentation pathways of protonated peptides are reviewed in the present paper
paying special attention to classification of the known fragmentation channels into a simple …

The gas-phase structures of the protonated pentapeptide Leu-enkephalin and its main
collision-induced dissociation (CID) product ions, b 4 and a 4, are investigated by means of …

Intramolecular hydrogen transfer in five model amide and peptide radicals and cation-
radicals was investigated by combined B3LYP-MP2 calculations. Hypervalent ammonium …

Modern soft ionization techniques readily produce protonated or multiply protonated
peptides. Collision‐induced dissociation (CID) of these protonated species is often used as …

The mechanism of the cleavage of protonated amide bonds of oligopeptides is discussed in
detail exploring the major energetic, kinetic, and entropy factors that determine the …

Infrared multiple-photon dissociation spectroscopy is effected on the K+ tagged aromatic
amino acids tyrosine and phenylalanine, as well as the K+ tagged peptides bradykinin …

Guided ion beam tandem mass spectrometry (GIBMS) is used to investigate the energy-
dependent threshold collision-induced dissociation (TCID) of the two protonated isomers …

Quantum chemical and RRKM calculations were performed on protonated GGG in order to
determine the atomic details of the main fragmentation pathways leading to formation of b2 …

Infrared multiple photon dissociation (IRMPD) spectroscopy is used to identify the structure
of the b 2+ ion generated from protonated tri-alanine by collision induced dissociation (CID) …