Abstract
The first observation to our knowledge of a second-order nonlinear optical effect in a nonpolar molecular ion is reported. Hyper-Rayleigh scattering was observed from aqueous and organic solutions of the tricyanomethanide ion [C(CN) 3 ] − . Because of the absence of a dipole moment and the presence of a charge in this planar, nonpolar, but highly polarizable molecular anion with D 3h symmetry, no electric-field-induced second-harmonic-generation experiments are possible. The experimental values for the first hyperpolarizability β xxx [(7 ± 1.5) × 10 −30 esu, independent of the solvent] are in good agreement with the results from quantum-chemical calculations.
Original language | English (US) |
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Pages (from-to) | 525-527 |
Number of pages | 3 |
Journal | Optics Letters |
Volume | 18 |
Issue number | 7 |
DOIs | |
State | Published - Jan 1 1993 |
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics