Synthesis, Characterization, and Thermal and Antimicrobial Activities of Some Novel Organotin(IV): Purine Base Complexes

Table 2

¹H and ¹³C NMR data (𝛿 ppm) of theophylline complexes.

Compound	^1H NMR						^13C NMR; Sn–CH2
	–R moiety			Theophylline moiety
	Ar–H	–CH2–	H-8	–CH3 at N-3	–CH3 at N-1	–NH–
Theophylline (HL^1)	—	—	7.5-7.6 (d,1H)	3.6-3.7 (s,3H)	3.2 (s,3H)	10.4–10.6 (br,2H)
(C6H5CH2)3Sn(L^1)	7.9–8.1 (m, 15H)	3.6-3.7 (s, 6H)	7.7-7.8 (d,1H)	3.9-4.0 (s,3H)	3.3 (s,3H)	—	17.87
(p-ClC6H4CH2)3Sn(L^1)	8.0–8.2 (m, 12H)	3.9 (s,6H)	7.6-7.7 (d,1H)	4.1-4.2 (s,3H)	3.4 (s,3H)	—	24.01
(C6H5CH2)2Sn(L^1)Cl	7.9-8.0 (m, 10H)	3.8 (s,4H)	7.5-7.6 (d,1H)	4.0-4.1 (s,3H)	3.3-3.4 (s,3H)	—	17.21
(p-ClC6H4CH2)2Sn(L^1)Cl	8.0-8.1 (m, 8H)	3.7-3.8 (s,4H)	7.7-7.8 (d,1H)	4.0 (s,3H)	3.4-3.5 (s,3H)	—	23.50