title: A neutral xenon-containing radical, HXeO.
abstract: We report an open-shell species containing xenon, HXeO ((2)Sigma), prepared by UV photolysis of H(2)O/Xe or N(2)O/HBr/Xe solid mixtures at 7 K and subsequent thermal mobilization of oxygen atoms at >/=30 K. The H-Xe stretching absorption of HXeO in solid Xe is at 1466.1 cm(-1), and it shifts to 1070.3 cm(-1) upon deuteration. The extensive ab initio calculations indicate that HXeO is intrinsically stable, owing to significant ionic and covalent contributions to its bonding. The formation of HXeO ((2)Sigma) radicals in these experiments suggests extensive stabilization and thermal mobility of singlet ((1)D) oxygen atoms in solid Xe and holds promises for the stability of the HKrO and HArO species.
authors.affiliation: Laboratory of Physical Chemistry, FIN-00014 University of Helsinki, Finland.
authors.forename: Leonid
authors.initials: L
authors.lastname: Khriachtchev
authors.forename: Mika
authors.initials: M
authors.lastname: Pettersson
authors.forename: Jan
authors.initials: J
authors.lastname: Lundell
authors.forename: Hanna
authors.initials: H
authors.lastname: Tanskanen
authors.forename: Tiina
authors.initials: T
authors.lastname: Kiviniemi
authors.forename: Nino
authors.initials: N
authors.lastname: Runeberg
authors.forename: Markku
authors.initials: M
authors.lastname: Räsänen