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Formation of a stabilized coordinatively unsaturated metal carbonyl cluster, H[sub 2]Ru[sub 4](CO)[sub 12], by photochemical reaction of H[sub 2]Ru[sub 4](CO)[sub 13] adsorbed on the surface of silica

Journal Article · · Journal of Physical Chemistry; (United States)
DOI:https://doi.org/10.1021/j100105a020· OSTI ID:6348476
;  [1]; ;  [2];  [3]
  1. Mitsui Toatsu Chemicals, Inc., Yokohama (Japan)
  2. Univ. of Tokyo (Japan)
  3. Gakushuuin Univ., Tokyo (Japan)
+ Show Author Affiliations
The photochemical formation of coordinatively unsaturated metal carbonyl clusters on the surface of metal oxide supports has the potential of leading to interesting new materials that can be used as selective catalysts. In line with the authors' work on this theme, the photochemical reaction of dihydrotetraruthenium tridecacarbonyl, H[sub 2]Ru[sub 4](CO)[sub 13], adsorbed on the surface of silica was investigated by DRS UV-visible, FT-IR, and EXAFS spectroscopies. When irradiated by UV-visible light, H[sub 2]Ru[sub 4](CO)[sub 13] loses one carbon monoxide ligand, producing selectively a coordinatively unsaturated H[sub 2]Ru[sub 4](CO)[sub 12] on the surface of silica. The initial photoproduct, H[sub 2]Ru[sub 4](CO)[sub 12], is interacting weakly with surface hydroxyl groups, which are the only functionality available to act as a stabilizing ligand, and the dissociated carbon monoxide is lost from the surface. This process prevents secondary reactions, thus leading to the selective formation and stabilization of the coordinatively unsaturated H[sub 2]Ru[sub 4](CO)[sub 12], which is unstable in solutions and undergoes secondary reactions. 20 refs., 4 figs., 2 tabs.
OSTI ID:
6348476
Journal Information:
Journal of Physical Chemistry; (United States), Journal Name: Journal of Physical Chemistry; (United States) Vol. 97:3; ISSN JPCHAX; ISSN 0022-3654
Country of Publication:
United States
Language:
English

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Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ABSORPTION SPECTROSCOPY
ADSORPTION
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CARBONYLS
CATALYST SUPPORTS
CATALYSTS
CHALCOGENIDES
CHEMICAL REACTIONS
CHEMISTRY
HYDROGEN COMPOUNDS
ORGANIC COMPOUNDS
ORGANOMETALLIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHOTOCHEMICAL REACTIONS
PHOTOCHEMISTRY
REFRACTORY METAL COMPOUNDS
RUTHENIUM COMPOUNDS
SILICON COMPOUNDS
SILICON OXIDES
SORPTION
SORPTIVE PROPERTIES
SPECTROSCOPY
STABILIZATION
SURFACE PROPERTIES
TRANSITION ELEMENT COMPOUNDS
X-RAY SPECTROSCOPY