Time-resolved studies on the dynamics of photoinduced formation of M(CO)/sub 4/(polypyridyl) (M = Mo, Cr, and W) complexes

Journal Article · Thu Apr 21 04:00:00 EDT 1988 · J. Phys. Chem.; (United States)

DOI:https://doi.org/10.1021/j100319a027· OSTI ID:7148211

Kalyanasundaram, K

The dynamics of photoinduced formation of M(CO)/sub 4/(LL) (M = Mo(O), Cr(O), and W(O) and LL = various polypyridyl ligands such as 5-chloro-1, 10-phen, 1,10-phen, 2,2'-bpy, and 4,4'-Me/sub 2/-2,2'-bpy) from M(CO)/sub 6/ and LL in benzene has been examined via pulsed laser photolysis techniques. The formation of the polypyridyl tetracarbonyl complex occurs in several steps, extending over a wide range of time scales (from a few nanoseconds to several milliseconds). Spectral evidence is presented for the formation of a pentacarbonyl monodentate polypyridine intermediate. The rate of formation of the complexes follows the order Mo(O) > Cr(O) > W(O). For a given metal carbonyl, the reactivity of various ligands follows the order 5-Clphen greater than or equal to phen > bpy greater than or equal to Me/sub 2/bpy.

• Research Organization: Ecole Polytechnique Federale, Lausanne (Switzerland)
• OSTI ID: 7148211
• Journal Information: J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 92:8; ISSN JPCHA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400500* -- Photochemistry
AZINES
CARBONYLS
CHEMICAL REACTIONS
CHROMIUM COMPLEXES
COMPLEXES
DATA
DECOMPOSITION
DYNAMICS
EXPERIMENTAL DATA
HETEROCYCLIC COMPOUNDS
INFORMATION
LASERS
LIGANDS
MECHANICS
MOLYBDENUM COMPLEXES
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANOMETALLIC COMPOUNDS
PHOTOCHEMICAL REACTIONS
PHOTOLYSIS
PYRIDINES
TRANSITION ELEMENT COMPLEXES
TUNGSTEN COMPLEXES