| Compound | Assigmenta ν(CS) | ν(CN) |
| TMTU | 1120s | 1511s, 1372s |
| [MnBr2(TMTU)2] | 1098s | 1513m, 1367s |
| [FeBr2(TMTU)0.75] | 1067s | 1532w, 1393m |
| [CoBr2(TMTU)3] | 1109s | 1558s, 1377s |
| [NiBr2(TMTU)2] | 1098s | 1512m, 1361s |
| [CuBr2(TMTU)2] | 1114s | 1537s, 1380s |
| [ZnBr2(TMTU)2] | 1110s | 1557s, 1382s |
| [CdBr2(TMTU)2] | 1108s | 1556s, 1390s |