The microwave spectrum, substitution structure and dipole moment of cyanobutadiyne, HCCCCCN

Alexander, A. J.; Kroto, Harold W.; Walton, D. R. M.

doi:10.1016/0022-2852(76)90347-7

Cited by 135 publications

(56 citation statements)

References 14 publications

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“…References.-(1) Yamamoto et al 1990; (2) Killian et al 1990;(8) Guélin et al 1982;(9) Wilson & Green 1977;(10) McCarthy et al 1999;(11) Cernicharo et al 1987;(12) Burrell et al 1980;(13) Pracna et al 1996;(14) Winnewisser et al 1982;(15) Alexander et al 1976;(16) Kirby et al 1980;(17) Bell et al 1997;(18) Iida et al 1991. employed for the observations, where the off position was taken at Á ¼ 30 0 , Á ¼ 30 0 . The backend was a bank of acousto-optical radiospectrometers (AOSs).…”

Section: Introductionmentioning

confidence: 99%

Abundant Carbon‐Chain Molecules toward the Low‐Mass Protostar IRAS 04368+2557 in L1527

Sakai

Hirota

et al. 2008

ApJ

191

273

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Section: Introductionmentioning

confidence: 99%

Abundant Carbon‐Chain Molecules toward the Low‐Mass Protostar IRAS 04368+2557 in L1527

Sakai

Hirota

et al. 2008

ApJ

191

273

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“…Sakai et al 2008c;2 Sakai et al 2009). e Rest frequencies were derived from Kuze et al (2011, in preparation Alexander et al (1976). l Winnewisser et al (1982).…”

Section: Carbon-chain Alcohol Hc 4 Ohmentioning

confidence: 99%

A SEARCH FOR INTERSTELLAR CARBON-CHAIN ALCOHOL HC₄OH IN STAR-FORMING REGION L1527 AND DARK CLOUD TMC-1

Araki

Takano

Yamabe

et al. 2011

ApJ

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We report a sensitive search for the rotational transitions of the carbon-chain alcohol HC 4 OH in the frequency range 21.2-46.7 GHz in the star-forming region L1527 and the dark cloud TMC-1. The motivation was laboratory detection of HC 4 OH by microwave spectroscopy. Despite achieving rms noise levels of several millikelvin in the antenna temperature using the 45 m telescope at Nobeyama Radio Observatory, the detection was not successful, leading to 3σ upper limits corresponding to the column densities of 2.0 × 10 12 and 5.6 × 10 12 cm −2 in L1527 and TMC-1, respectively. These upper limits indicate that [HC 4 OH]/[HC 5 N] ratios are less than 0.3 and 0.1 in L1527 and TMC-1, respectively, where HC 5 N is an HC 4 -chain cyanide and HC 4 OH is a hydroxide. These ratios suggest that the cyano carbon-chain molecule dominates the hydroxyl carbon-chain molecule in L1527 and TMC-1. This is contrary to the case of saturated compounds in hot cores, e.g., CH 3 OH and CH 3 CN, and can be a chemical feature of carbon-chain molecules in L1527 and TMC-1. In addition, the column densities of the "unsubstituted" carbon-chain molecule C 4 H and the sulfur-bearing molecules SO and HCS + were determined from detected lines in L1527.

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“…Therefore further assumptions are required to derive a mean- ingful structure. Since the C-H and C s C distances have been found to be nearly identical in a wide range of acetylenic molecules (23,(28)(29)(30)(31)(32)(33)(34)(35)(36)(37)(38)(39) values of 1.057 f 0.002 A and 1.206 f 0.003 A were initially assumed for these bond lengths; only for fluoroacetylene (29) do the C-H and C-C distances lie outside these ranges. Using the assumed ethynyl group geometry a series of effective structures was calculated for propiolyl chloride.…”

Section: Dipole Momerztmentioning

confidence: 99%

The microwave spectrum, harmonic force field, structure, and dipole moment of propiolyl chloride

Davis¹,

Gerry²

1982

Can. J. Chem.

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The microwave spectra of four isotopic species of propiolyl chloride, HCCCOCl, have been measured for their ground and υ9 = 1 excited vibrational states. Values for the rotational constants, quartic centrifugal distortion constants, chlorine nuclear quadrupole coupling constants, and the molecular dipole moment have been obtained. The centrifugal distortion constants have been combined with vibrational wavenumbers from the literature to calculate an approximate harmonic force field. Effective and ground state average structures of the most abundant isotopic species, H12C12C12C16O35Cl, are presented.

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The microwave spectrum, substitution structure and dipole moment of cyanobutadiyne, HCCCCCN

Cited by 135 publications

References 14 publications

Abundant Carbon‐Chain Molecules toward the Low‐Mass Protostar IRAS 04368+2557 in L1527

Abundant Carbon‐Chain Molecules toward the Low‐Mass Protostar IRAS 04368+2557 in L1527

A SEARCH FOR INTERSTELLAR CARBON-CHAIN ALCOHOL HC₄OH IN STAR-FORMING REGION L1527 AND DARK CLOUD TMC-1

The microwave spectrum, harmonic force field, structure, and dipole moment of propiolyl chloride

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The microwave spectrum, substitution structure and dipole moment of cyanobutadiyne, HCCCCCN

Cited by 135 publications

References 14 publications

Abundant Carbon‐Chain Molecules toward the Low‐Mass Protostar IRAS 04368+2557 in L1527

Abundant Carbon‐Chain Molecules toward the Low‐Mass Protostar IRAS 04368+2557 in L1527

A SEARCH FOR INTERSTELLAR CARBON-CHAIN ALCOHOL HC4OH IN STAR-FORMING REGION L1527 AND DARK CLOUD TMC-1

The microwave spectrum, harmonic force field, structure, and dipole moment of propiolyl chloride

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Resources

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A SEARCH FOR INTERSTELLAR CARBON-CHAIN ALCOHOL HC₄OH IN STAR-FORMING REGION L1527 AND DARK CLOUD TMC-1