Knowledge Bank

Electronic transitions, from the $\mathrm{<mrow\; data-mjx-texclass="ORD">3</mrow>}\Sigma g\cdot$ ground state to Rydberg stales have been observed in the 280 to 380 nm region, corresponding to a two-photon energy region of 53000 to $72000cm-1$. The $B2$ was produced by the reaction of diborane $(B2H6)$ with atomic fluorine or chlorine in a flow reactor. The $B2$ was multiphoton ionized and the ions mass selected. Spectra were obtained for the $\mathrm{<mrow\; data-mjx-texclass="ORD">11</mrow>}B11B$ and $\mathrm{<mrow\; data-mjx-texclass="ORD">11</mrow>}B10B$ isotopomers.