Table 1 Calculated zone-centre phonon frequencies of gap-edge and highest Raman-active modes (cm −1)
From: Lattice Dynamics of the Rhenium and Technetium Dichalcogenides
Mode | TcS2 | ReS2 | ReS2 | ReSe2 | ReSe2 |
|---|---|---|---|---|---|
calc. | calc. | expt. | calc. | expt. | |
8 or 9 | 187.9 | 162.0 | 161.3 | 120.9 | 123.8 |
10 or 11 | 252.3 | 218.2 | 211.4 | 152.0 | 158.2 |
highest A g | 444.27 | 440.7 | 438.5 | 309.6 | 293.9 |