Raman spectra of totally symmetric ν 1 , ν 2 bands and three doubly degenerate ν 15 , ν 16 , ν 17 bands of liquid benzene-d 6 confined to porous silica glasses with pore sizes ranging from 14 to 40 Å (average pore radius) were measured at T ) 295 K and atmospheric pressure. The vibrational relaxation rate, τ vib -1 , and the reorientational relaxation time, τ reo (and the perpendicular diffusion constant D ⊥ ), were obtained from the totally symmetric ν 2 band using the standard method. The parallel diffusion constant D | was obtained from the doubly degenerate ν 16 band using a method originally suggested by Tanabe. The results show that τ vib -1 and both D ⊥ and D | are significantly affected by the confinement. As pore size decreases, τ vib -1 increases, while both D ⊥ and D | decrease. The dependence of τ vib -1 and τ reo on the pore size scales as 1/R, indicating a dominant surface interaction effect. Comparing the relative changes of D ⊥ and D | to their bulk liquid values, D | is affected to a lesser extent by the confinement. Consequently, the overall rotation of benzene molecules in nanopores becomes increasingly anisotropic with increasing confinement.