Relations between the frequency map of a generic Hamiltonian model, describing the vibrational dynamics of the LiNC/LiCN molecular system, and its chaotic behavior are discussed. The scaling structure of the local frequency map is studied based on the multifractal analysis. This approach allows different behaviors to be recognized as well as to study the evolution of the molecular system at dif...

The physical origins of vibrational frequency shifts have been extensively studied in order to understand noncovalent intermolecular interactions in the condensed phase. In the case of carbonyls, vibrational solvatochromism, MD simulations, and vibrational Stark spectroscopy suggest that the frequency shifts observed in simple solvents arise predominately from the environment's electric field d...

We compare CO’s response to electric fields at edge and terrace sites on the stepped Pt~335! surface. The comparison is made at zero frequency and at the frequency of the C–O stretch vibration. Atop-bonded CO is observed with reflection–absorption ir spectroscopy ~RAIRS!, electroreflectance vibrational spectroscopy ~EVS!, and high-resolution electron energy loss spectroscopy ~HREELS!. Coadsorbe...