C:Corrosive;1308-47-0Relevant articles and documents
Study of the chemiluminescent reaction between alkali dimers and oxygen atoms
Figger, H.,Straubinger, R.,Walther, H.
, p. 179 - 185 (1981)
The reaction of alkali dimers with oxygen atoms has been studied in a crossed beam experiment.Strong chemiluminescence of the reaction products was observed.It is shown that the luminescence was emitted by alkali from the reaction M2+O->MO+M* (M alkali atom).M* can be excited up to exoergicity of this reaction at least in the cases M=Cs and Na.For M=Cs, detailed rate constants for the excitation of the different excited states have been determined using both laser induced fluorescence and chemiluminescence.The rates decrease nearly exponentially as a function of the excitation energy.They partly follow the expectation of statistical theories.Absolute reaction cross sections have been determined for all of the reactions investigated.They agree partially with those predicted by the harpoon model.
The microwave spectrum of the cesium monoxide CsO radical
Yamada, Chikashi,Hirota, Eizi
, p. 9587 - 9592 (1999)
The microwave spectrum of CsO has been observed and analyzed, not only in the ground vibrational state, but also in the ν=1-3 excited vibrational states. The CsO radical was generated by the reaction of N2O with Cs vapor, which was produced by the reaction of Li metal with CsCl at 500-530°C. The observed spectra were found to conform to those expected for a 2Σ diatomic molecule, thereby establishing the ground electronic state of CsO to be of 2Σ. The observed rotational and centrifugal distortion constants yielded the equilibrium bond length and the harmonic vibrational frequency to be 2.300 745 (16) Aand 356.78 (11) cm-1, respectively, based on the Born-Oppenheimer approximation. A careful examination of the observed spectral pattern definitely concluded that the spin-rotation interaction constant was positive, at variance with the expectation from a simple 2Σ/2π two-states interaction. This observation was interpreted by assuming positive contributions from higher excited electronic states which superseded a negative contribution from the 2π lowest excited state; the latter state was responsible for the large dependence of the spin-rotation interaction constant on the vibrational quantum number and was estimated from this vibrational dependence to be located at 1225 cm-1 above the ground electronic state. In reverse to the spin-rotation splitting, the hyperfine splitting was found to increase with the vibrational excitation; in the υ=3 state the hyperfine structure was found completely resolved. However, the hyperfine coupling constants did not vary much with the vibrational quantum number, namely the vibrational dependence of the hyperfine splitting was caused primarily by that of the spin-rotation splitting. The observed hyperfine interaction constants indicated that CsO was an ionic molecule.
