Journal of Chemical Physics, Vol.99, No.12, 10074-10077, 1993
Pressure-Induced Vibrational Frequency-Shifts of Ethane and Methyliodide - Evidence for the Formation of C-H Hydrogen-Bonds in High-Density Fluids
High pressure Raman scattering vibrational frequency shift studies of C2H6, C2H6/CH2Cl2, and CH3I are compared with perturbed hard sphere theory predictions. Good agreement is found for the C-C and C-I modes, while the C-H modes are found to soften anomalously at high density, suggesting the formation of C-H hydrogen bonds.