CH1012
                                         L1 /   
‹#›
                                         L1 /   
12
UV SPECTRA TABLES I
1. Dienes, Trienes, etc lmax e
CH2=CH2 170 16 000
CH2=CH-CH=CH2 217 21 000
CH2=CH-CH=CH-CH=CH2 258 35 000
2. Conjugated carbonyl cmpds
CH3-C(=O)-CH3 279 15
CH2=CHC(=O)-CH3 213 7 000
320 30
For 1. and 2. extending conjugation increases lmax (® longer wavelength) and e .