Synthesis and Conformational Assignment of N-(E)-Stilbenyloxymethylenecarbonyl-Substituted Hydrazones of Acetone and o-(m- and p-) Chloro- (nitro-) benzaldehydes by Means of ¹H and ¹³C NMR Spectroscopy

Table 2

UV/Vis* and IR (KBr) data of compounds 1–18.

Compound	UV/Vis; 𝜆max (lg ε)	IR (cm^−1); δ–CH=CH– trans E
1	293.50 (4.61)	952
2	303.50 (4.60)	967
3	296.00 (4.70)	960
4	323.00 (4.55)	953
5	321.50 (4.51)	966
6	324.50 (4.63)	963
7	293.50 (4.61)	958
8	326.60 (4.46)	962
9	295.00 (4.65)	958
10	328.00 (4.58)	970
11	326.50 (4.53)	966
12	329.50 (4.66)	962
13	291.00 (4.45)	966
14	386.00 (4.35)	962
15	294.00 (4.52)	967
16	383.00 (4.38)	966
17	385.50 (4.38)	966
18	361.00 (4.44)	970

*The UV/Vis spectra of 1–3, 7–9, 13–15 were recorded in MeOH,
The UV/Vis spectra of 4–6, 10–12, 16–18 were recorded in DMSO.