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. 2021 Jan 31;26(3):737. doi: 10.3390/molecules26030737

Table 1.

Experimental band frequencies and assignments of Raman spectra for compounds 5, 7a, 7c, 10, 11, and 13.

Experimental Spectra (cm−1)
5 7a 7c 10 11 13
- 1719 1704 - 1715 1710 C=O stretching
1664 1652 1650 1625 1627 1629 C=C stretching in allyl/vinyl chains
1465–1450 1465–1450 1458 1465–1450 1465–1450 1458 CH3, CH2, CH bending in side chain and cycloalkane ring
- 1350 1367 1370 - 1360 P=O stretching, CH3, CH2, CH bending in side chain
1324 1325 1326 1325 1322 1334
1284 1265 1275 - - - P-O stretching in O=P-O-C moiety
- - - 1260 - 1261 P-C stretching in O=P-C=C moiety
1234 1235 1235 1237 1234 1234 P=O, CH3, CH2, CH bending in side chain and cycloalkane ring
- 1170 1187 1170 1173 1186 s P-O stretching, CH3, CH2, CH bending and C-C stretching in cycloalkane ring, C-O stretching
1143 1141 1145 - - 1141
1105 1097 1098 1100 1100 1101
1038 1036 1044 1039 1039 1040
921 921 922 - - - P-O bending in O=P-O-C moiety
- - - 790 795 792 P-C bending in O=P-C=C moiety
- 755 766 - 752 752 O-C=O stretching, CH3, CH2, CH bending in cycloalkane ring
736 745 732 735 735 735 CH3, CH2, CH bending in cycloalkane ring
704 708 707 704 704 707 CH3, CH2 in side chain, P-O stretching
662 665 657 661 661 662 CH3, CH2, CH bending in cycloalkane ring, in side chains, stretching C-C in cycloalkane ring
614 618 614 619 618 620
615 595 - 593 595 619
560 558 - 561 560 560 w
535 535 530 531 530 533 s
460 459 470 560 460 462 stretching C-C in cycloalkane ring, C-H bending
414 410 402 414 410 413
388 389 - 386 - -
232 234 240 233 - 236 OH bending

vw—very weak, w—weak, s—strong.