Abstract
The microwave spectrum of H3N-HCN has been measured using the molecular beam electric resonance technique. A symmetric top spectrum is observed and the following spectroscopic constants were obtained: B 0(MHz) 3016.756 1(24) DJ(kHz) 5.68(30) DJK(Mhz) 0.418 22(76) eQq1+eQq2/2(MHz) -3.929 4(46) eQq 1-eQq2/2(MHz) -0.584(16) μ(D) 5.260 8(55) eQq 1 and eQq2 are the quadrupole coupling constants associated with the 14N nuclei of HCN and NH3, respectively. The induced dipole moment is 0.939(12) D and the N-H weak bond length is 2.156(10)Å. The average bending angle of the NH3 subunit is 20.40(26)° while that of the HCN subunit is 9.56(37)°. The force constant for the weak bond stretch is 0.122(6) mdyn/Å corresponding to a stretching frequency of 141(3) cm-1.
Original language | English (US) |
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Pages (from-to) | 3073-3077 |
Number of pages | 5 |
Journal | The Journal of chemical physics |
Volume | 80 |
Issue number | 7 |
DOIs | |
State | Published - 1984 |