ИСТИНА

Aryl-substituted Cp ligands could be useful to provide an effective steric control over Ln3+ ion coordination sphere and to improve the photophysical properties of the complexes. We have used polyphenylcyclopentadienyl and diphenyl-aryl-cyclopentadienyl ligands to design different types of neodymium, gadolinium, terbium and dysprosium complexes with different number of cyclopentadienyl ligands in the metal coordination sphere. The use of arylsubstituted Cp ligands with bulk aryl substituents derived from condensed arenes and arenes, containing heteroatoms, allowed us to obtain new structural types of complexes due to the non-valent and covalent interaction involving aryl substituents.