International Journal of Spectroscopy / 2014 / Article / Tab 1 / Research Article
Orientation of 2,6-Dicarbethoxy-3,5-bis(pyridine-3-yl)tetrahydro-1,4-thiazine-1,1-dioxide on Silver Nanoparticles: Surface-Enhanced Raman Spectral Studies Table 1 Vibrational modes observed for DBTD and its corresponding assignments.
S. no. nRs cm−1 SERS cm−1 Assignments 1 3275 NH stretching mode 2 3069 CH stretching mode 3 2967 Asymmetric CH stretching mode of methylene 4 2878 Symmetric CH stretching mode of methylene 5 1724 1674 C=O stretching 6 1591 1610 C–C and C–N stretching 7 1577 1537 C–C and C–N stretching 8 1449 1493 1425 C–C and C–N stretching C–C and C–N stretching 9 1350 1368 Asymmetric S=O stretching 10 1323 1304 Asymmetric SO2 stretching 11 1283 1270 Symmetric SO2 stretching 12 1225 1254 Symmetric Ph–N–Ph stretching 13 1204 C–H in-plane bending mode 14 1185 C–H in-plane bending mode 15 1130 1140 Symmetric S=O stretching 16 1110 Asymmetric C–N–C stretching 17 1041 Ring breathing 18 1030 1028 982 Ring breathing Ring breathing 19 902 901 Ring breathing 20 841 860 877 722 Symmetric C–N–C stretching Symmetric C–N–C stretching CH out-of-plane bending 21 671 695 Symmetric Ph–S–Ph stretching 22 634 In-plane ring deformation 23 610 591 In-plane ring deformation 24 526 547 OSO bending 25 491 503 Out-of-plane ring deformation 26 420 409 Out-of-plane ring deformation