. 2019 Nov 14;15:2753–2764. doi: 10.3762/bjoc.15.266

Table 3.

Experimental band separation (in nm) of the characteristic UV–vis absorption bands, calculated as the λ_max subtraction between E and Z-isomers, and photostationary-state-conversion efficiency (PSS in %).

	n–π* (E–Z)	π–π* (E–Z)	PSS (% E)^a	PSS (% Z)^b

4pzH^c	14	53	70	>98
4pzH-F2	13	33	42	92
4pzMe^c	−16	39	>98	>98
4pzMe-F2	−3	30	77	93
4pzMe-Cl2	−1	29	85	80
4pzMe-OMe2	−3	13	73	81

^aIrradiation wavelength = 420 nm. ^bUVA irradiation. ^cData extracted from reference [18].