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Table 2 Calculated zone-centre phonon frequencies of TcS2

From: Lattice Dynamics of the Rhenium and Technetium Dichalcogenides

Index Frequency (cm −1) IR Activity Raman Activity
4 148.14 0.0000 428
5 160.38 0.0000 1016
6 166.40 0.0484 0
7 178.54 0.0000 3964
8 187.93 0.0000 900
9 188.51 0.1416 0
10 250.77 0.3533 0
11 252.28 0.0000 3967
12 258.18 0.3939 0
13 266.53 0.0000 505
14 267.82 1.2843 0
15 277.76 0.0000 806
16 287.93 0.3621 0
17 292.34 0.0000 4655
18 301.69 0.0000 2999
19 306.90 0.1785 0
20 307.26 0.0000 3179
21 312.84 0.0000 2761
22 323.05 1.6289 0
23 328.50 0.0000 1318
24 329.73 4.2948 0
25 343.13 2.9997 0
26 349.84 0.0000 4650
27 362.87 0.1476 0
28 365.12 0.0000 961
29 372.55 0.2031 0
30 375.97 0.0000 5592
31 399.18 0.3195 0
32 411.93 0.0000 6409
33 424.81 0.0000 19,660
35 444.27 0.0000 9908
36 468.57 3.9835 0