Table 6.

The IR data of Cds. 15–18 (KBr pellets, ν_max, cm⁻¹).

	Cd. 15	Cd. 16	Cd. 17	Cd. 18
ν−OH(COOH)	3522.27	3626.78, 3076.53	3370.63	3464.64
ν−NH−	3311.60	3313.74	3444.83	3282.88
ν−CO−	1693.84	1650.47	1704.85	1688.55
ν>C=C<	1650.48	1617.38	1655.58	1649.58
νAr	1583.13, 1469.73	1597.79, 1516.69	1607.74, 1514.88	1608.13, 1514.88
ν−SO−	N/A	1345.22, 1155.91	N/A	N/A
νC−O(ArOH)	1299.40	1287.63	1288.64	1278.45