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Themed collection Multiply charged ions (MCIs) in the gas-phase

23 items
Editorial

Multiply charged ions in the gas phase

PCCP Themed Issue on multiply charged ions in the gas phase.

Graphical abstract: Multiply charged ions in the gas phase
From the themed collection: Multiply charged ions (MCIs) in the gas-phase
Perspective

Doubly-charged ions in the planetary ionospheres: a review

Results from numerical simulations of the densities of doubly-charged ions in the ionospheres of Venus, the Earth, Mars and Titan.

Graphical abstract: Doubly-charged ions in the planetary ionospheres: a review
From the themed collection: Multiply charged ions (MCIs) in the gas-phase
Perspective

Multiply-charged ions and interstellar chemistry

Multiply-charged ions formed when molecules and ions harvest ambient energy are reactive intermediates that can influence the ionization and chemical structure of the interstellar medium.

Graphical abstract: Multiply-charged ions and interstellar chemistry
From the themed collection: Multiply charged ions (MCIs) in the gas-phase
Paper

Single and multiple photoionisation of H2S by 40–250 eV photons

Multi-electron coincidence spectroscopy combined with synchrotron radiation elucidates double and triple ionization and core-hole decay in H2S.

Graphical abstract: Single and multiple photoionisation of H2S by 40–250 eV photons
From the themed collection: Multiply charged ions (MCIs) in the gas-phase
Paper

Metastable states in NO2+ probed with Auger spectroscopy

Potential energy curves of NO2+ were determined using Auger spectroscopy subsequent to O 1s and N 1s core ionization.

Graphical abstract: Metastable states in NO2+ probed with Auger spectroscopy
From the themed collection: Multiply charged ions (MCIs) in the gas-phase
Paper

Modeling the interactions between peptide functions and Sr2+: formamide–Sr2+ reactions in the gas phase

In formamide–Sr2+ interactions the dominant process is a Coulomb explosion yielding SrOH+ + HCNH+. Some lighter doubly charged species such as NH3Sr2+, COSr2+ and H2OSr2+ are also produced.

Graphical abstract: Modeling the interactions between peptide functions and Sr2+: formamide–Sr2+ reactions in the gas phase
From the themed collection: Multiply charged ions (MCIs) in the gas-phase
Paper

Microsolvation of Co2+ and Ni2+ by acetonitrile and water: photodissociation dynamics of M2+(CH3CN)n(H2O)m

M2+(CH3CN)n(H2O)m (M = Co, Ni) photolyze via solvent loss, proton transfer and electron transfer, depending on the cluster size and composition.

Graphical abstract: Microsolvation of Co2+ and Ni2+ by acetonitrile and water: photodissociation dynamics of M2+(CH3CN)n(H2O)m
From the themed collection: Multiply charged ions (MCIs) in the gas-phase
Paper

Coulomb explosion of nitrogen and oxygen molecules through non-Coulombic states

We systematically study Coulomb explosion of nitrogen and oxygen molecules in intense 8 and 24 fs laser pulses.

Graphical abstract: Coulomb explosion of nitrogen and oxygen molecules through non-Coulombic states
From the themed collection: Multiply charged ions (MCIs) in the gas-phase
Paper

The effect of reagent charge state on the charge inversion efficiency of singly charged polyatomic ions in the gas phase

Charge inversion efficiency in an ion trap varies with reagent charge state for both dynamic and instrumental reasons.

Graphical abstract: The effect of reagent charge state on the charge inversion efficiency of singly charged polyatomic ions in the gas phase
From the themed collection: Multiply charged ions (MCIs) in the gas-phase
Paper

Al(CN) 3−6 and Al(NC)3−6 trianions

The gas phase trianion Al(CN)3−6 is metastable with respect to dissociation, but the Coulomb barrier is so high that it can be considered to be stable for all practical purposes.

Graphical abstract: Al(CN) 3−6 and Al(NC)3−6 trianions
From the themed collection: Multiply charged ions (MCIs) in the gas-phase
Paper

Gas-phase reactions of doubly charged actinide cations with alkanes and alkenes—probing the chemical activity of 5f electrons from Th to Cm

Gas-phase activation of alkanes and alkenes by doubly charged actinide cations, Th2+ through Cm2+, proceeds along several pathways.

Graphical abstract: Gas-phase reactions of doubly charged actinide cations with alkanes and alkenes—probing the chemical activity of 5f electrons from Th to Cm
From the themed collection: Multiply charged ions (MCIs) in the gas-phase
Open Access Paper

Treating highly charged carbon and fullerene clusters as dielectric particles

Difference between image charge and dielectric particle models for treating the fragmentation of highly charged fullerenes.

Graphical abstract: Treating highly charged carbon and fullerene clusters as dielectric particles
From the themed collection: Multiply charged ions (MCIs) in the gas-phase
Paper

Electronic state selectivity in dication-molecule single electron transfer reactions: NO2+ + NO

Single-electron transfer between NO2+ and NO generates pairs of NO+ ions which behave very differently to the products from the analogous CO22+/CO2 and O22+/O2 collision systems.

Graphical abstract: Electronic state selectivity in dication-molecule single electron transfer reactions: NO2+ + NO
From the themed collection: Multiply charged ions (MCIs) in the gas-phase
Paper

Evidence for hydrogen bond network formation in microsolvated clusters of Pt(CN)42: collision induced dissociation studies of Pt(CN)42−·(H2O)nn = 1–4, and Pt(CN)42−·(MeCN)mm = 1, 2 cluster ions

Low energy collision induced dissociation has been used to investigate the microsolvation of Pt(CN)42− revealing “surface” solvated structures.

Graphical abstract: Evidence for hydrogen bond network formation in microsolvated clusters of Pt(CN)42−: collision induced dissociation studies of Pt(CN)42−·(H2O)nn = 1–4, and Pt(CN)42−·(MeCN)mm = 1, 2 cluster ions
From the themed collection: Multiply charged ions (MCIs) in the gas-phase
Paper

Electron-capture induced dissociation of doubly charged dipeptides: on the neutral losses and N–Cα bond cleavages

Electron capture induced dissociation experiments on a series of dipeptide dications reveal that the yields of c, z and w ions, ammonia loss and charge reduced intact species strongly depend on the peptide composition.

Graphical abstract: Electron-capture induced dissociation of doubly charged dipeptides: on the neutral losses and N–Cα bond cleavages
From the themed collection: Multiply charged ions (MCIs) in the gas-phase
Paper

Double ionization of cycloheptatriene and the reactions of the resulting C7Hn2+ dications (n = 6, 8) with xenon

A benchmark study for fragmentation dynamics and ionic reactivity of medium sized hydrocarbon dications approached by experimental and theoretical methodologies.

Graphical abstract: Double ionization of cycloheptatriene and the reactions of the resulting C7Hn2+ dications (n = 6, 8) with xenon
From the themed collection: Multiply charged ions (MCIs) in the gas-phase
Paper

Multi-electron spectroscopy: Auger decays of the argon 2s hole

The complete cascade decay of the Ar 2s hole is retrieved. Coincidences between photo- and Auger electrons reveal Ar2+ intermediate states as demonstrated in the figure.

Graphical abstract: Multi-electron spectroscopy: Auger decays of the argon 2s hole
From the themed collection: Multiply charged ions (MCIs) in the gas-phase
Paper

Doubly charged protonated a ions derived from small peptides

Charge separation in the CID of [LaIII(peptide)(CH3CN)m]3+ gives novel protonated an ions; stability depends on the residue at the N-terminus.

Graphical abstract: Doubly charged protonated a ions derived from small peptides
From the themed collection: Multiply charged ions (MCIs) in the gas-phase
Paper

Metastable ClO2+ and ClO3+ ions in the gas phase: a combined theoretical and mass spectrometric investigation

Theoretical and mass spectrometric investigation of the ClO2+ dication.

Graphical abstract: Metastable ClO2+ and ClO3+ ions in the gas phase: a combined theoretical and mass spectrometric investigation
From the themed collection: Multiply charged ions (MCIs) in the gas-phase
Paper

Electronic structure and lifetimes of GaX2+ (X = N, O, F) in the gas phase. Unraveling stability trends

GaN2+ and GaF2+ can be considered as bound systems in the gas phase. The former is kinetically stable and the latter thermodynamically stable in clear contrast with GaO2+ which was found to be metastable.

Graphical abstract: Electronic structure and lifetimes of GaX2+ (X = N, O, F) in the gas phase. Unraveling stability trends
From the themed collection: Multiply charged ions (MCIs) in the gas-phase
Paper

Calcium-containing diatomic dications in the gas phase

Novel calcium-containing diatomic dications in the gas phase are detected experimentally and their thermodynamic and spectroscopic properties predicted theoretically.

Graphical abstract: Calcium-containing diatomic dications in the gas phase
From the themed collection: Multiply charged ions (MCIs) in the gas-phase
Paper

The role of conformational flexibility on protein supercharging in native electrospray ionization

Protein conformational changes induced by supercharging reagents late in the ESI droplet lifetime causes increased charging from aqueous solutions.

Graphical abstract: The role of conformational flexibility on protein supercharging in native electrospray ionization
From the themed collection: Multiply charged ions (MCIs) in the gas-phase
Paper

Oxygen-containing gas-phase diatomic trications and tetracations: ReOz+, NbOz+ and HfOz+ (z = 3, 4)

Experimental and theoretical investigations reveal the existence of three gas-phase diatomic trications ReO3+, NbO3+ and HfO3+ and the diatomic tetracation NbO4+.

Graphical abstract: Oxygen-containing gas-phase diatomic trications and tetracations: ReOz+, NbOz+ and HfOz+ (z = 3, 4)
From the themed collection: Multiply charged ions (MCIs) in the gas-phase
23 items

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PCCP Themed Issue on multiply charged ions in the gas phase.

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