Detection of Te atoms in the ground 'P 2,,,0 states has been accomplished using two-photon laser-induced fluorescence (LIF) and "2 + 1" multiphoton ionization (MPI). Te atoms were produced by multiphoton dissociation of ( CZH&Te in the region 358-395 nm. The LIF and MPI experiments utilize selective
The mechanism of iron atom production in the multiphoton dissociation of organometallic iron complexes
โ Scribed by Joseph J. Belbruno
- Publisher
- Elsevier Science
- Year
- 1989
- Tongue
- English
- Weight
- 583 KB
- Volume
- 160
- Category
- Article
- ISSN
- 0009-2614
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โฆ Synopsis
An examination of the reaction pathway in the 2+ 1 multiphoton dissociation of a series of related iron tricarbonyl organometallic complexes is reported. The study includes the use of pressure-dependent measurementsand the application of RRKM theory to explore the reaction mechanism. It is concluded on the basis ofthe relative intensities of the observed iron electronic transition and the statistical calculations, that ground-state molecular fragments are produced via a statistical, stepwise pathway and that the Fe final product states result from further direct excitation to a dissociative channel. This conclusion commits with recent studies of Cr(C0)6 which indicate that two different mechanisms are active, leading to different product quantum states.
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Iron has an intimate relationship with life in general and with simple forms of life in particular. It is well established that ferrous iron may serve as an energy source during oxidation for specific chemoautotrophic bacteria. The reduction of ferric iron into the ferrous state, however, is an ener