β Scribed by L.D. Ziegler; J.L. Roebber
No coin nor oath required. For personal study only.
The resonance Raman spectrum of NH3 dissolved in n-hexane (z lo-' M) is obtained using 200 nm excitation, This wavelength is coincident with the lowest-lying Rydberg excitation. The scattering activity of the v2 coordinate is dramatically reduced in the solution spectra as compared to the gas phase results. This quenching of yz Raman activity is largely attributed to significant increases in the pure dephasing rate of the Rydberg transition in solution and multimode effects due to the coupling of the resonant excitation to low-frequency solvent-dependent bath modes. The inversion barrier in the ground electronic state is estimated to increase by at least 475 cm-' in n-hexane solution
π SIMILAR VOLUMES
The Raman intensity versus electrode voltage behavior of a series of substituted pyridines and saturated nitrogen heterocycUc compounds was studied at two laser excitation energies. The voltage (resonance) maximum shifts to more positive potential with increasing excitation energy for the substitute