Tungsten flash photolysis

Molybdenum and Tungsten.—Flash photolysis and e.s.r. studies40 have been carried out on [Mo(CN)8]3- in solutions of varying pH, concentration, and solvent. The results are consistent with (11) as the primary reaction following excitation of the complex to an LMCT state. 

This is the dominant overall reaction for the decomposition on platinum or tungsten at 200 and 380 °C, respectively40. Most workers on hydrazine decomposition flames41-44, in which the reactions are homogeneous, report a stoichiometric equation similar to (b) for final flame temperatures up to 1900 °K. Measurements of MacLean and Wagner45 on decomposition flames and of Husain and Norrish37 on the flash photolysis of hydrazine indicate the contribution of the overall reaction... 

The photochemical reactions of naphthalene and phenanthrene with hydroxide and cyanide in aqueous acetonitrile to give substitution products have been studied by flash photolysis and fluorescence spectroscopy.Evidence for the generation of the arene radical cation was obtained. Similarly, the conversion of 1,4-dimethoxybenzene to 4-cyanoanisole by ultra-violet light irradiation of slurries of tungsten oxide or titanium oxide in aqueous acetonitrile has been shown by flash photolysis to involve the intermediacy of the dimethoxybenzene radical cation. 

This was believed to reduce the chemical complexity of the system. Fluorine atoms to start the reaction are generated in the flash photolysis of tungsten... 

Chance and co-workers have designed a flow system where the protein is continuously pumped optically using a tungsten or xenon flash lamp (764 nm). Using continuous illumination for various times and temperatures. Chance et al. have observed three intermediate states upon MbCO photolysis. At 40 K, a state with a recombination rate constant of 2 x 10 /s has been identified from two slower states with rate constants of 10 /s. 

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