Nuclear quadrupole coupling constant in dinitrogen: a determination from the rotational spectrum of N2...HCCH
โ Scribed by A.C. Legon; A.L. Wallwork; P.W. Fowler
- Publisher
- Elsevier Science
- Year
- 1991
- Tongue
- English
- Weight
- 619 KB
- Volume
- 184
- Category
- Article
- ISSN
- 0009-2614
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The ground-state rotational spectrum of the linear, hydrogen-bonded isotopomer HC'5N...D79Br has been investigated by pulsednozzle Fourier-transform microwave spectroscopy to give the spectroscopic constants &= 1374.4429( 3) MHz, D,= 1.790( ) kHz, x( 79Br) =438.645( 9) MHz and M( 79Br) =2.4( 3) kHz.
Partially resolved hyperfine structure arising from H,Br nuclear-spin-nuclear-spin coupling has been identified in each Brnuclear quadrupole component of the l,,, +O,,,, transition of H,O...HBr. Lineshape simulation leads to a value of D,,= -23 (2) kHz for the spin-spin coupling constant for both H,