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. 2021 Jul 23;13(15):2434. doi: 10.3390/polym13152434

Table 2.

Selected FTIR spectral data for some common groups in complexes 1–3.

Complex Wave Number (ν, cm–1)
NH CH=N C=C SO2 asym SO2 sym Sn–O Sn–N
1 3459 1678 1624 1307 1188 552 440
2 3460 1684 1630 1304 1179 533 439
3 3461 1667 1623 1307 1185 550 454