Photodissociation of Cr(CO)6 in a molecular beam at 248 nm: Observation of primary and secondary photoproducts by mass spectrometry

Article abstract of DOI:10.1063/1.456958

Photodissociation of Cr(CO)6 induced by a KrF* excimer laser (248 nm) was examined under molecular beam conditions, using a quadrupole mass spectrometer with electron impact ionization (11-19 eV) to detect the products as their respective ions.The ions of all Cr(CO)x products (x=0-5) were produced upon photodissociation of Cr(CO)6 at laser fluences from 1 to 10 mJcm^-2.The quantitative behaviour of the Cr(CO)⁺_x product ion yields vs laser fluence as well as statistical rate calculations indicate that Cr(CO)4 is the major product formed upon single-photon dissociation of Cr(CO)6 under collisionless conditions at 248 nm.The additional Cr(CO)⁺_x (x<4) product ions observed at low fluences are formed primarily by electron-impact fragmentation of Cr(CO)4 in the mass spectrometer ionizer.At laser fluences >5mJcm^-2, secondary photodissociation of Cr(CO)4 becomes important.Cr(CO)2 is assigned as the major photoproduct formed via secondary photodissociation of Cr(CO)4.

Full text of DOI:10.1063/1.456958

Photodissociation of Cr(CO)6 in a molecular beam at 248 nm: Observation of primary
and secondary photoproducts by mass spectrometry
George W. Tyndall and Robert L. Jackson
Citation: The Journal of Chemical Physics 91, 2881 (1989); doi: 10.1063/1.456958
View online: http://dx.doi.org/10.1063/1.456958
View Table of Contents: http://scitation.aip.org/content/aip/journal/jcp/91/5?ver=pdfcov
Published by the AIP Publishing
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This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
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This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
164.107.15.241 On: Wed, 26 Nov 2014 18:05:37

This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
164.107.15.241 On: Wed, 26 Nov 2014 18:05:37

This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
164.107.15.241 On: Wed, 26 Nov 2014 18:05:37

This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
164.107.15.241 On: Wed, 26 Nov 2014 18:05:37

This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
164.107.15.241 On: Wed, 26 Nov 2014 18:05:37

This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
164.107.15.241 On: Wed, 26 Nov 2014 18:05:37

This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
164.107.15.241 On: Wed, 26 Nov 2014 18:05:37

This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
164.107.15.241 On: Wed, 26 Nov 2014 18:05:37