Bimolecular reactions of cationic platinum clusters Pt(n)+, n = 1–24, and anionic platinum clusters Pt(n)−, n = 3–22, with CH(4) and CD(4) are studied under low pressure conditions in an FT-ICR mass spectrometer, using an isotopically enriched 195Pt sample. Strongly size-dependent dehydrogenation and formation of Pt(n)CH(2)+/− is observed for both charge states. Starting with n = 12, cationic clusters also afford stabilization of a [Pt(n),

he gas phase chemistry of hydrated electron and hydrated aluminum cluster reactions was studied using Fourier Transform Ion Cyclotron Resonance Mass Spectrometry (FT-ICR MS). The hydrated electrons were reacted with a variety of organic and inorganic molecules including carbon dioxide and oxygen, relevant for atmospheric chemistry. The behavior and reaction mechanisms study has lead to their classification into four types of chemical reactions: collisional

The chemistry of gas phase hydrated electrons with formic acid is studied by Fourier transform ion cyclotron resonance (FT-ICR) mass spectrometry. Black body infrared radiative dissociation and ligand exchange of water by formic acid molecules take place, accompanied by a small contribution of an intracluster redox reaction. During incorporation of the first formic acid molecule, the electron may recombine with the acidic proton and evaporate as

Hydrated singly charged zinc cations Zn+(H2O)n, 6

Herein we report the observation of the full catalytic cycle of CO oxidation with N2O on cationic platinum clusters for Ptn+, n=6-8, in the gas phase studied by Fourier-transform ion cyclotron resonance (FT-ICR) mass spectrometry. Platinum is the key catalytic metal for a variety of industrial and environmental applications, for example, it catalyzes the oxidation of CO with O2 in catalytic converters. This reaction has been studied in detail on

In the present article we review the chemistry of aqueous electrons, as studied by Fourier transform ion cyclotron resonance (FT-ICR) mass spectrometry. FT-ICR studies of the hydrated electron cluster reactions have the advantage that compared with bulk solutions the electrons exhibit long lifetimes, and impurity effects can be completely eliminated. The review demonstrates that aqueous electrons, the simplest chemical reagents, exhibit a multifaceted

The gas-phase reactions of hydrated electrons with carbon dioxide and molecular oxygen were studied by Fourier transform ion cyclotron resonance (FT-ICR) mass spectrometry. Both CO2 and O2 react efficiently with (H2O)n- because they possess low-lying empty pi* orbitals. The molecular CO2- and O2- anions are concurrently solvated and stabilized by the water ligands to form CO2-(H2O)n and O2-(H2O)n. Core exchange reactions are also observed, in which

Cationic and anionic clusters 195Ptn±, 1

A route to efficient generation of C6H, potentially the benzyne radical cation, is presented. Laser vaporization of Mg+. and supersonic expansion in helium doped with o-, m-, or p-C6H4F2 yields, among other ions, o-, m-, p-C6H4F2Mg+. complexes, but no C6H. Collision-induced dissociation experiments show that the o-C6H4F2Mg+. complex can be converted into C6H in a mildly energetic collision, with a center-of-mass energy around 1-2 eV. These conditions

An H/D-exchange reaction involving the methyl group of acetonitrile is observed in the small anionic water cluster OH-(CD3CN)(H2O)2. In this cluster, a randomization of H and D atoms takes place, and in subsequent collisions with CD3CN, the potentially partially deuterated acetonitrile is replaced by the fully deuterated species. In sequential collisions, fully deuterated clusters OD-(CD3CN)(D2O)2 are obtained as final products. The H/D-exchange