Knowledge Bank

The structure of the XeHCl complex has been determined by molecular beam electric resonance spectroscopy. Spectroscopic constants for the $\mathrm{<mrow\; data-mjx-texclass="ORD">132</mrow>}XeH.35Cl$ isotopic species are: \begin{eqnarray*} (B+C)/2&=& 989.262(5);MHz\ D_{J}&=&3.84(32);KHz\ \mu_{a}&=&1.090(3);D\ eqO_{a}^{Cl}&=&-34.640(20);MHz \end{eqnarray*} The vibrationally averaged bond length is 4.258 {\AA}. The Xe-Cl-H angle is $34.8\circ$, determined from the projection of the $\mathrm{<mrow\; data-mjx-texclass="ORD">35</mrow>}Cl$ quadrupole coupling constant onto the a-axis, XeHCl is similar to ArHCl, but has a smaller bond angle and a more rigid bond. Unanalyzed splittings of several MHz, due to the $\mathrm{<mrow\; data-mjx-texclass="ORD">131</mrow>}Xe$ quadrupole interaction, are observed in the microwave spectrum of $\mathrm{<mrow\; data-mjx-texclass="ORD">131</mrow>}XeH35Cl$.