Mechanism of the photochemical C-C coupling reaction of tricarbonyl({eta}{sup 6}-1,3,5-cycloheptatriene)chromium with conjugated dienes. IR study in liquid noble gases and low-temperature matrices

Journal Article · Sun Mar 01 04:00:00 EST 1992 · Organometallics

DOI:https://doi.org/10.1021/om00039a021· OSTI ID:415027

Houwelingen, T van; Stufkens, D J; Oskam, A ^[1]

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1. Universiteit van Amsterdam (Netherlands)

Photochemical C-C coupling of Cr(CO){sub 3}({eta}{sup 6}-C{sub 7}H{sub 8}) (C{sub 7}H{sub 8} = 1,3,5-cycloheptatriene) with conjugated dienes, produces a ({eta}{sup 4:2}-bicyclo[4.4.1]undeca-2,4,8-triene)tricarbonyl-and/or a 1-butene-1,2-diylcyclohepta-2,4-dien-5-yldicarbonylchromium complex. The authors investigated the mechanism of the photochemical reactions in low-temperature matrices, and the associated thermal reactions in liquefied noble gases and organic solvents observing the reaction coordinate by infrared spectroscopy. Two primary photoprocesses were observed. The only thermal reaction giving rise to coupling was CO loss. 38 refs., 4 figs., 4 tabs.

• Sponsoring Organization: USDOE
• OSTI ID: 415027
• Journal Information: Organometallics, Journal Name: Organometallics Journal Issue: 3 Vol. 11; ISSN ORGND7; ISSN 0276-7333
• Country of Publication: United States
• Language: English

Related Subjects

40 CHEMISTRY
ABSORPTION SPECTROSCOPY
CHROMIUM COMPLEXES
ORGANOMETALLIC COMPOUNDS
PHOTOCHEMICAL REACTIONS
REACTION INTERMEDIATES