Synthesis, Characterization, Semiempirical and Biological Activities of Organotin(IV) Carboxylates with 4-Piperidinecarboxylic Acid

Table 2

IR data^a (cm⁻¹) of organotin(IV) complexes 1–5.

Comp. number	OH	NH	COO			Sn–C	Sn–O	Sn–Cl
			asym	sym
HL	3639 b	3456b	1671w	1398s	273	—	—	—
1	—	3459m	1622s	1438s	184	543b	450m	375s
2	—	3457b	1629s	1483m	146	519w	449w	328s
3	—	3461b	1606s	1452w	154	279s	442b	318b
4	—	3462b	1601s	1441w	161	554s	451m	—
5	—	3456b	1551s	1370m	181	264s	447m	—

s: strong; m: medium; w: weak; b: broad.