M. Schmittel et al., New sterically encumbered 2,9-diarylphenanthrolines for the selective formation of heteroleptic bis(phenanthroline)copper(I) complexes, EUR J INORG, (5), 2001, pp. 1155-1166
The synthesis and characterization of several 2,9-diarylphenanthrolines wit
h anthracenyl substituents in the 2-position is described. These compounds
were used to prepare a series of homoleptic and heteroleptic bis(phenanthro
line) copper(I) complexes, whose cyclic voltammetry, UV/Vis and fluorescenc
e data are investigated. From PM3 semiempirical calculations it becomes cle
ar that two different strategies can be applied to prepare clean heterolept
ic complexes.