IR laser pyrolysis and the isotopic labelling of organometallic compounds
作者:Neil J. Bristow、Barry D. Moore、Martyn Poliakoff、Graham J. Ryott、James J. Turner
DOI:10.1016/s0022-328x(00)98693-5
日期:1984.1
A homogeneous gas phase pyrolysis technique involving SF6 sensitization and a continuouswave (CW) CO2 laser, is described for preparing small quantities (∼ 100 mg) of organometallic compounds. Several reactions have been successfully carried out and the synthesis of Os(CO)5 from H2Os(CO)4 and CO is discussed in detail. With IR laserpyrolysis, room temperature reactors and sub-atmospheric pressures
Stereochemistry of phosphorus trihalide derivatives of iron carbonyl
作者:J.B.Ph. Tripathi、M. Bigorgne
DOI:10.1016/s0022-328x(00)83732-8
日期:1967.8
particularly from the point of vie of statellites due to 13CO-groups. It has been shown that these derivatives contain all the isomers geometrically expected for the trigonal bipyramidal structure around the iron atom. The isolation of these isomers was not possible; nevertheless, reaction mixtures containing only one isomer have been prepared.
Phosphorus Trifluoride Substitution Compounds of Iron Pentacarbonyl
作者:Ronald J. Clark
DOI:10.1021/ic50020a011
日期:1964.10
Ultraviolet laser photolysis: Primary photochemistry of Fe(CO)<sub>5</sub> in PF<sub>3</sub>
作者:Gilbert Nathanson、Barbara Gitlin、Alan M. Rosan、James T. Yardley
DOI:10.1063/1.440841
日期:1981.1
We have studied the photolysis of mixtures of Fe(CO)5 and PF3 with a KrF laser operating at 248 nm. The product yields of Fe(CO)2(PF3)3, Fe(CO)3(PF3)2, and Fe(CO)4PF3 have been measured as a function of laser fluence and mixture composition. A simple kinetic model appears to explain semiquantitatively the observed dependence of product yield upon mixture composition. This model has allowed us to determine that the primary photochemical yields at 248 nm for the fragments Fe(CO)2, Fe(CO)3, and Fe(CO)4 over the fluence range 0.1–200 mJ/cm2 are 0.55, 0.35, and 0.10, respectively, independent of laser fluence. This fragmentation results from a simple one-photon absorption process. We have found that CO ligands are exchanged readily in collisions of the above fragments with Fe(CO)5, with a bimolecular rate constant relative to that for trapping by PF3 of kM/kT=4. We have also found that these primary photofragments react with Fe(CO)5 to form unobserved products with a rate constant (relative to that for trapping by PF3) of kQ/kT=7.