The submillimeter-wave spectrum of KCCH (X1Σ)

J. Xin; L. M. Ziurys

doi:10.1086/311442

The submillimeter-wave spectrum of KCCH (X1Σ)

J. Xin, L. M. Ziurys

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

13 Scopus citations

Abstract

The pure rotational spectrum of KCCH (X1Σ) has been observed in the laboratory for the first time using millimeter/submillimeter direct absorption techniques. Thirty-seven rotational transitions of this molecule were recorded in the range 225-490 GHz, and 15 transitions were recorded for its deuterium isotopomer, KCCD. Both species were created by the reaction of potassium metal and acetylene or deuterated acetylene under DC discharge conditions. The transition frequencies were analyzed to produce precise spectroscopic constants for KCCH and KCCD. This study is the first experimental information available for potassium monoacetylide and indicates that it is a linear species, with some, but not total, ionic character to its bonding. Rest frequencies are also now available for KCCH for astronomical searches.

Original language	English (US)
Pages (from-to)	L151-L153
Journal	Astrophysical Journal Letters
Volume	501
Issue number	1
DOIs	https://doi.org/10.1086/311442
State	Published - Jul 1 1998

Keywords

ISM: molecules
Line: identification
Molecular data

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1086/311442

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title = "The submillimeter-wave spectrum of KCCH (X1Σ)",

abstract = "The pure rotational spectrum of KCCH (X1Σ) has been observed in the laboratory for the first time using millimeter/submillimeter direct absorption techniques. Thirty-seven rotational transitions of this molecule were recorded in the range 225-490 GHz, and 15 transitions were recorded for its deuterium isotopomer, KCCD. Both species were created by the reaction of potassium metal and acetylene or deuterated acetylene under DC discharge conditions. The transition frequencies were analyzed to produce precise spectroscopic constants for KCCH and KCCD. This study is the first experimental information available for potassium monoacetylide and indicates that it is a linear species, with some, but not total, ionic character to its bonding. Rest frequencies are also now available for KCCH for astronomical searches.",

keywords = "ISM: molecules, Line: identification, Molecular data",

author = "J. Xin and Ziurys, {L. M.}",

note = "Funding Information: This research is supported by NSF Grant AST-95-03247 and NASA Grant NAG5-3785. Publisher Copyright: {\textcopyright} 2000. The American Astronomical Society. All rights reserved.",

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AU - Xin, J.

AU - Ziurys, L. M.

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N2 - The pure rotational spectrum of KCCH (X1Σ) has been observed in the laboratory for the first time using millimeter/submillimeter direct absorption techniques. Thirty-seven rotational transitions of this molecule were recorded in the range 225-490 GHz, and 15 transitions were recorded for its deuterium isotopomer, KCCD. Both species were created by the reaction of potassium metal and acetylene or deuterated acetylene under DC discharge conditions. The transition frequencies were analyzed to produce precise spectroscopic constants for KCCH and KCCD. This study is the first experimental information available for potassium monoacetylide and indicates that it is a linear species, with some, but not total, ionic character to its bonding. Rest frequencies are also now available for KCCH for astronomical searches.

AB - The pure rotational spectrum of KCCH (X1Σ) has been observed in the laboratory for the first time using millimeter/submillimeter direct absorption techniques. Thirty-seven rotational transitions of this molecule were recorded in the range 225-490 GHz, and 15 transitions were recorded for its deuterium isotopomer, KCCD. Both species were created by the reaction of potassium metal and acetylene or deuterated acetylene under DC discharge conditions. The transition frequencies were analyzed to produce precise spectroscopic constants for KCCH and KCCD. This study is the first experimental information available for potassium monoacetylide and indicates that it is a linear species, with some, but not total, ionic character to its bonding. Rest frequencies are also now available for KCCH for astronomical searches.

KW - ISM: molecules

KW - Line: identification

KW - Molecular data

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The submillimeter-wave spectrum of KCCH (X1Σ)

Abstract

Keywords

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