| Wavenumber (cm−1) | Suggested Assignments | References |
| 503+ m | δ(Si-O-C) | [17] |
| 508* m | νs(Si-O-Si ring) | [22] [23] |
| 582* m | νs(Si-O-Si chain) | [22] [23] |
| 620+ vw | νs(Si-(OCH3)2) | [22] - [25] |
| 643* vw | νs(HO-Si(OCH3)) | [22] [23] |
| 663* vw | νs(Si-(OH)2) | [22] [23] |
| 664+ vw | νs(Si-C) | [22] [23] |
| 838 m | ν(C-O) |
|
| 863 m | ν(C-O) |
|
| 910 m | ν(C-C) | [17] |
| 1010 w | νa(Si-O-Si) | [21] |
| 1090 m | νa(Si-O-C) | [17] [18] |
| 1155 m | νs(C-O-C) |
|
| 1250 m | νa(C-O-C) | [21] |
| 1297 m | τ(CH2) | [18] |
| 1370 m | ν(N-C) | [19] [21] |
| 1403 m | δs(CH2) | [17] [19] |
| 1455 s | δa(CH2) | [17] [19] |
| 2808 m | νs(CH2) | [17] [20] [21] |
| 2875 s | νs(CH3) | [17] [20] [21] |
| 2932 s | νa(CH2) | [17] [20] [21] |
| 2973 s | νa(CH3) | [17] [20] [21] |