Matrix studies of the thermal and photolytic reactions of Zn, Cd and Hg (M) atoms with H2O: formation and characterisation of the adduct M⋯OH2and photoproduct HMOH
- 1 January 2004
- journal article
- Published by Royal Society of Chemistry (RSC) in Physical Chemistry Chemical Physics
- Vol. 6 (19) , 4586-4594
- https://doi.org/10.1039/b405300a
Abstract
IR spectra have been used to chart the thermal and photolytic reactions occurring during or after the codeposition of Zn, Cd or Hg (M) vapour with an excess of H2O-doped Ar. Following the formation of the contact pair MOH2, detected after deposition of a matrix including thermally evaporated metal atoms, UV irradiation (200 ≤ λ/nm ≤ 400) causes MOH2 to rearrange with insertion of the metal atom into an O–H bond in forming the M(II) hydride HMOH. Characterisation of the molecules has been underpinned by reference (i) to the effects of isotopic change (1,2H) and (ii) to the results of density functional theory (DFT) calculations. The properties of the molecules are compared with those of related species, and the mechanism of the photochemical change is discussed.Keywords
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