Gas phase multicollisional reactions of metal cluster cations with water molecules
文献情報
Reactions within complexes consisting of metal cluster cations and water molecules have been studied using a pulsed arc cluster source (PACS) and a reflectron time-of-flight mass spectrometer. The mass spectra obtained from metal–water cluster ions reveals extensive dehydrogenation of the associated water molecules resulting in the formation of metal-oxide clusters of the general form MMOP(OH)+ (where M=copper, barium and holmium). For clusters with barium, and holmium, the dehydrogenation occurs from P1 and for copper for P3. These metal oxide and hydroxide products are more abundant than both that of the bare metal clusters MM+ and the associated hydrated metal clusters MM+(H2O)N. The stability of the metal oxide clusters as determined by the relative abundances of these species as a function of N and P is seen to correspond to oxidation numbers accessible to the metal ions. The correspondence between the formal oxidation number of a metal and its propensity for oxide formation is investigated. Possible mechanisms for the formation of the observed complex ions are proposed. For complexes containing HoM+ the variation of the abundances with cluster size is discussed.
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Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.










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