title: Reactions of laser-ablated U atoms with HF: infrared spectra and quantum chemical calculations of HUF, UH, and UF in noble gas solids.
abstract: Reactions of laser-ablated U atoms with HF produce HUF as the major product and UH and UF as minor products, which are identified from their argon and neon matrix infrared spectra. Our assignment of HUF is confirmed by the observation of DUF and close agreement with observed and calculated vibrational frequencies and deuterium shifts in the vibrational frequencies. Our previous observation of the UH diatomic molecule from argon matrix experiments with H2, HD, and D2 as reagents is confirmed through its present observation with HF and DF, and with recent higher level quantum chemical calculations. The HF reaction provides a lower concentration of F in the system and thus simplifies the fluorine chemistry relative to similar U atom reactions with F2, and the new matrix identification of UF here is consistent with recent high level calculations on UF. In addition, we find evidence for the higher oxidation state secondary reaction products UHF2, UHF3, and UH2F2.
authors: †Institut für Anorganische une Analytische Chemie, Albert-Ludwigs Universität Freiburg, Albertstrasse 21, 79104 Freiburg, Germany.|‡Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904-4319, United States.
authors: Thomas
authors: T
authors: Vent-Schmidt
authors: †Institut für Anorganische une Analytische Chemie, Albert-Ludwigs Universität Freiburg, Albertstrasse 21, 79104 Freiburg, Germany.|‡Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904-4319, United States.
authors: Lester
authors: L
authors: Andrews
authors: †Institut für Anorganische une Analytische Chemie, Albert-Ludwigs Universität Freiburg, Albertstrasse 21, 79104 Freiburg, Germany.|§Department of Chemistry, Institut für Chemie und Biochemie, Freie Universität Berlin, Fabeckstrasse 34-36, D-14195 Berlin, Germany.
authors: Sebastian
authors: S
authors: Riedel