Rotational Spectrum of the Most Abundant Isotopomers of the Van der Waals Dimer N_2···HBr

• Authors: Z. Kisiel , B. Pietrewicz , L. Pszczółkowski
• Languages of publication: EN

Abstracts

EN

The rotational spectrum of the two most abundant isotopomers of the weakly bound dimer between dinitrogen and hydrogen bromide, ^{14}N_2···H^{79}Br and ^{14}N_2···H^{81}Br, has been measured for the first time. The three lowest J transitions, at frequencies from 2 to 8 GHz, have been studied at conditions of supersonic expansion. The complicated hyperfine splitting structure arising from the three non-equivalent quadrupolar nuclei has been assigned and fitted. The resulting spectroscopic constants and the derived molecular quantities are compared with those for other isotopomers, as well as with experimental and calculated results for other linear dimers involving dinitrogen. A revised value for the nuclear quadrupole splitting constant for free nitrogen molecule,ρ(N)=-5.3(1) MHz, is also derived.

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: 2002
• Volume: 101
• Issue: 2
• Pages: 231-242

Dates

published

2002-02

received

2001-11-17

Contributors

author

Z. Kisiel

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

author

B. Pietrewicz

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

author

L. Pszczółkowski

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

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Identifiers

DOI

10.12693/APhysPolA.101.231