fig14

Figure 14. (A) Eu(II) complexes; (B) Ce(III) complexes, R¹ = R³ = H or Me; R² = H, Me, Br; R⁴ = Pz, ⁿBu, ⁱPr, H. The figure (A) is used with permission from the American Chemical Society^[73]. The figure (B) is used with permission from Wiley-VCH GmbH^[74].