Observation and Properties of the van der Waals Dimer Ar· ··HCCCN Produced in Electrical Discharge

• Authors: O. Desyatnyk , J. Kosarzewski , Z. Kisiel
• Languages of publication: EN

Abstracts

EN

The weakly bound van der Waals dimer between a molecule of cyanoacetylene and an argon atom was observed by rotational spectroscopy of supersonic expansion. Cyanoacetylene was generated in situ from vinyl cyanide precursor by means of a high voltage discharge just downstream of the expansion nozzle. Both ^bR- and ^bQ-type rotational transitions were measured and rotational, centrifugal distortion, and nuclear quadrupole splitting constants were determined. Analysis of the data shows that ground state geometry of the dimer is characterised by R_{cm}=3.65Å andθ=94.9º, with the Ar atom shifted from the position above the cyanoacetylene centre of mass in the direction of the CN group.

Keywords

EN

33.15.Dj; 33.15.Mt; 33.15.Pw; 33.20.Bx; 36.40.Mr

Discipline

• 33.15.Dj: Interatomic distances and angles
• 33.15.Mt: Rotation, vibration, and vibration-rotation constants
• 36.40.Mr: Spectroscopy and geometrical structure of clusters
• 33.15.Pw: Fine and hyperfine structure
• 33.20.Bx: Radio-frequency and microwave spectra

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2003
• Volume: 104
• Issue: 5
• Pages: 415-424

Dates

published

2003-11

received

2003-06-04

Contributors

author

O. Desyatnyk

• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warszawa, Poland

author

J. Kosarzewski

• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warszawa, Poland

author

Z. Kisiel

• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warszawa, Poland

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Identifiers

DOI

10.12693/APhysPolA.104.415