By means of the ab initio calculation, the second-order nonlinear derivatives of the dipole moment and polarizability of a dimer, CO⋯HCl, with respect to the two, CO and HCl, stretching modes are found to be inversely proportional to r3, where r is the intermolecular distance. The observed r-dependencies are interpreted by taking into account the dipole-induced-dipole interaction. Thus, it is shown that the intermolecular distance between two vibrational chromophores can be estimated by quantitatively examining the cross-peak intensity in a given 2D (two dimensional) vibrational spectrum.
|Number of pages||4|
|Journal||Journal of Chemical Physics|
|Publication status||Published - 2000 Mar 8|
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics