Table 2.

IR-spectra of O-benzoyl- and O-thiobenzoyl-β-aminopropioamidoximes (1–10).

No.	β-Amino group	Stretching and bending bond vibrations, cm−1, KBr pellets
		ν C=O	ν C=N	δ N-H and ν C=C	ν C=S	ν C-O	ν C-N	ν N-O	ν N(-H)2
1	Piperidin-1-yl	1719	1637	1611	—	1277	1117	1070	3201; 3329; 3455
2	Morpholin-1-yl	1719	1637	1610; 1613	—	1280	1117	1070	3198; 3331; 3455
3	Thiomorpholin-1-yl	1717	1637	1613	—	1278	1104	1070	3196; 3311; 3457
4	4-Phenylpiperazin-1-yl	1718	1637	1601; 1618	—	1280	1100	1072	3200; 3324; 3454
5	Benzimidazol-1-yl	1717	1635	1612; 1618	—	1277	1069	954	3196; 3310; 3452
6	Piperidin-1-yl	—	1674	1568; 1600	1297	1268	1123	1072	3340
7	Morpholin-1-yl	—	1674	1600	1296	1269	1123	1072	3334
8	Thiomorpholin-1-yl	—	1675	1568; 1600	1296	1267	1123	1073	3340
9	4-Phenylpiperazin-1-yl	—	1688	1600; 1642	1290	1249	1133	1100	3300
10	Benzimidazol-1-yl	—	1643	1600	1316	1257	1092	1025	3399