Knowledge Bank

The microwave spectrum of the CIO radical in the $\mathrm{<mrow\; data-mjx-texclass="ORD">2</mrow>}\Pi 1/2$ and $\mathrm{<mrow\; data-mjx-texclass="ORD">2</mrow>}\Pi 1/2$ states has been observed by passing a mixture of chlorine and oxygen gases through microwave discharge. The analysis of the spectrum gave the rotational constants, magnetic hyperfine coupling constants, A-type doubling constant, chlorine nuclear quadrupole coupling constant, and spin-orbit coupling constant. The equilibrium internuclear distance was estimated to be $1.569\pm 0.001\backslash AA$.