A bimolecular mechanism for ketene photodissociation in the near ultraviolet

William L. Hase; Patrick M. Kelley

doi:10.1063/1.433765

A bimolecular mechanism for ketene photodissociation in the near ultraviolet

William L. Hase, Patrick M. Kelley

Chemistry and Biochemistry

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

Abstract

The photochemistry of ketene has been studied at 3130, 3340, and 3660 Å. Quantum yields for carbon monoxide, ethylene, ethane, and acetylene were measured versus pressure. As p→0 the carbon monoxide quantum yield approaches 2 at each of the three wavelengths. Ethane and acetylene exhibit linear Stern-Volmer plots at 3130 and 3340 Å. However, at 3660 Å no acetylene was detected and ethane is formed in trace amounts. The above measurements are interpreted in terms of a mechanism which involves adduct formation between the ¹A₁, and ¹A ₂(¹A″) electronic states of ketene.

Original language	English
Pages (from-to)	5093-5099
Number of pages	7
Journal	The Journal of Chemical Physics
Volume	66
Issue number	11
DOIs	https://doi.org/10.1063/1.433765
State	Published - 1977

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abstract = "The photochemistry of ketene has been studied at 3130, 3340, and 3660 {\AA}. Quantum yields for carbon monoxide, ethylene, ethane, and acetylene were measured versus pressure. As p→0 the carbon monoxide quantum yield approaches 2 at each of the three wavelengths. Ethane and acetylene exhibit linear Stern-Volmer plots at 3130 and 3340 {\AA}. However, at 3660 {\AA} no acetylene was detected and ethane is formed in trace amounts. The above measurements are interpreted in terms of a mechanism which involves adduct formation between the 1A1, and 1A 2(1A″) electronic states of ketene.",

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AB - The photochemistry of ketene has been studied at 3130, 3340, and 3660 Å. Quantum yields for carbon monoxide, ethylene, ethane, and acetylene were measured versus pressure. As p→0 the carbon monoxide quantum yield approaches 2 at each of the three wavelengths. Ethane and acetylene exhibit linear Stern-Volmer plots at 3130 and 3340 Å. However, at 3660 Å no acetylene was detected and ethane is formed in trace amounts. The above measurements are interpreted in terms of a mechanism which involves adduct formation between the 1A1, and 1A 2(1A″) electronic states of ketene.

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SN - 0021-9606

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ER -

A bimolecular mechanism for ketene photodissociation in the near ultraviolet

Abstract

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