Knowledge Bank

The rotational spectrum of $N2O$-HF has been observed by molecular beam electric resonance spectroscopy. The spectrum of the principle isotopic species implies that the molecule is an asymmetric top in which the $N2O$ axis makes an angle of $\sim 47\circ$ with a line drawn between the centers of mass of the two sub-molecules. Spectra of the isotopic species $\mathrm{<mrow\; data-mjx-texclass="ORD">15</mrow>}N2O-HF$ and $\mathrm{<mrow\; data-mjx-texclass="ORD">14</mrow>}N2O-OF$ establish that the HF is hydrogen bonded toward the oxygen end of the $N2O$. [FIGURE].