User profiles for Richard A. O’Hair

Richard O'Hair

Professor of Chemistry
Verified email at unimelb.edu.au
Cited by 6004

Gas phase ion chemistry of transition metal clusters: production, reactivity, and catalysis

RAJ O'Hair, GN Khairallah - Journal of Cluster Science, 2004 - Springer
This review focuses on the use of mass spectrometry to examine the gas phase ion chemistry
of metal clusters. Ways of forming gas phase clusters are briefly overviewed and then the …

Gas phase studies of the Pesci decarboxylation reaction: synthesis, structure, and unimolecular and bimolecular reactivity of organometallic ions

RAJ O'Hair, NJ Rijs - Accounts of Chemical Research, 2015 - ACS Publications
Conspectus Decarboxylation chemistry has a rich history, and in more recent times, it has
been recruited in the quest to develop cheaper, cleaner, and more efficient bond-coupling …

MR1 presents microbial vitamin B metabolites to MAIT cells

…, AW Purcell, NL Dudek, MJ McConville, RAJ O'Hair… - Nature, 2012 - nature.com
Antigen-presenting molecules, encoded by the major histocompatibility complex (MHC) and
CD1 family, bind peptide- and lipid-based antigens, respectively, for recognition by T cells. …

Ab initio studies of amino acid conformations. 1. The conformers of alanine, serine, and cysteine

S Gronert, RAJ O'Hair - Journal of the American Chemical Society, 1995 - ACS Publications
High-level ab initio methods (up to MP2/6-31+ G*) have been used to characterize the gas
phase conformations of alanine, serine, and cysteine. A wide range of possible structures (36 …

Mining a tandem mass spectrometry database to determine the trends and global factors influencing peptide fragmentation

…, GE Reid, JS Eddes, RL Moritz, RAJ O'Hair… - Analytical …, 2003 - ACS Publications
A database of 5500 unique peptide tandem mass spectra acquired in an ion trap mass
spectrometer was assembled for peptides derived from proteins digested with trypsin. Peptides …

Catalytic gas phase oxidation of methanol to formaldehyde

T Waters, RAJ O'Hair, AG Wedd - … of the American Chemical …, 2003 - ACS Publications
Two gas-phase catalytic cycles for the two-electron oxidation of primary and secondary
alcohols were detected by multistage mass spectrometry experiments. A binuclear dimolybdate …

Gas-Phase Synthesis and Reactivity of the Organomagnesates [CH3MgL2]- (L = Cl and O2CCH3):  From Ligand Effects to Catalysis

RAJ O'Hair, AK Vrkic, PF James - … of the American Chemical …, 2004 - ACS Publications
Multistage mass spectrometry experiments combined with density functional theory (DFT)
calculations were used to examine the gas-phase synthesis and ion−molecule reactions of the …

Comparison of collision-induced dissociation and electron-induced dissociation of singly protonated aromatic amino acids, cystine and related simple peptides using …

H Lioe, RAJ O'Hair - Analytical and bioanalytical chemistry, 2007 - Springer
The gas-phase fragmentation reactions of singly protonated aromatic amino acids, their
simple peptides as well as simple models for intermolecular disulfide bonds have been …

The effective temperature of ions stored in a linear quadrupole ion trap mass spectrometer

…, GN Khairallah, RAJ O'Hair - … of The American Society …, 2013 - ACS Publications
The extent of internal energy deposition into ions upon storage, radial ejection, and detection
using a linear quadrupole ion trap mass spectrometer is investigated as a function of ion …

Gas-phase reactions of protonated tryptophan

H Lioe, RAJ O'Hair, GE Reid - Journal of the American Society for Mass …, 2004 - Springer
The gas phase reactions of protonated tryptophan have been examined in a quadrupole ion
trap using a combination of collision induced dissociation, hydrogen–deuterium exchange, …