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Gas-phase photodissociation of organometallic ions. Bond energy and structure determinations

Hettich, R. L ; Jackson, T. C ; Stanko, E. M ; Freiser, B. S

J. Am. Chem. Soc.; (United States), 1986-08, Vol.108 (17), p.5086-5093 [Periódico revisado por pares]

Washington, DC: American Chemical Society

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Título:
Gas-phase photodissociation of organometallic ions. Bond energy and structure determinations
Autor: Hettich, R. L ; Jackson, T. C ; Stanko, E. M ; Freiser, B. S
Assuntos: 400301 - Organic Chemistry- Chemical & Physicochemical Properties- (-1987) ; 400500 - Photochemistry ; BINDING ENERGY ; CATIONS ; CHARGED PARTICLES ; CHEMICAL BONDS ; CHEMICAL REACTIONS ; CHEMISTRY ; DATA ; DECOMPOSITION ; DISSOCIATION ENERGY ; ENERGY ; Exact sciences and technology ; EXPERIMENTAL DATA ; FLUIDS ; GASES ; INFORMATION ; INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY ; IONS ; Mass spectrometry ; MASS SPECTROSCOPY ; MOLECULAR STRUCTURE ; NUMERICAL DATA ; Organic chemistry ; ORGANIC COMPOUNDS ; ORGANOMETALLIC COMPOUNDS ; PHOTOCHEMICAL REACTIONS ; PHOTOCHEMISTRY ; PHOTOLYSIS ; PHYSICAL PROPERTIES ; Reactivity and mechanisms ; SPECTROSCOPY ; THERMODYNAMIC PROPERTIES ; THERMODYNAMICS
É parte de: J. Am. Chem. Soc.; (United States), 1986-08, Vol.108 (17), p.5086-5093
Notas: ark:/67375/TPS-NT2NHKJR-S
istex:1285687FEE74F91F339992C1BC512B5CC6828CFD
AC02-80ER10689
Descrição: The photodissociation of a variety of gas-phase organometallic ions was investigated with Fourier transform mass spectrometry in order to obtain spectroscopic and thermodynamic information on these complexes. The results indicate that these ionic complexes absorb broadly and photodissociate readily in the ultraviolet and visible spectral regions, with cross sections for lambda/sub max/ ranging from 0.02 to 0.30 A/sup 2/. Because of this broad absorption, photodissociation thresholds are attributed to thermodynamic and not spectroscopic factors. Bond energies and heats of formation obtained by monitoring photodissociation onsets show good agreement with those obtained by other techniques. Interestingly, product ions generated by photodissociation are found to differ significantly in a number of instances from those produced by collision-induced dissociation. Finally, differentiation of two FeC/sub 4/H/sub 6//sup +/ and four NiC/sub 4/H/sub 8//sup +/ isomers is demonstrated by observing differences in cross sections, spectral band positions, and neutral losses.
Editor: Washington, DC: American Chemical Society
Idioma: Inglês

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Gas-phase photodissociation of organometallic ions. Bond energy and structure determinations

Hettich, R. L ; Jackson, T. C ; Stanko, E. M ; Freiser, B. S

Washington, DC: American Chemical Society

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