F. Avecilla et al., The template synthesis and X-ray crystal structure of the first dinuclear lanthanide(III) iminophenolate cryptate, CHEM COMMUN, (2), 1999, pp. 125-126
Lanthanide ions act as templates in the formation of dinuclear Ln(III) comp
lexes with a cryptand ligand bearing three phenolate groups; the presence o
f both lanthanide ions into the cavity of the cryptand was confirmed by X-r
ay structure analysis and spectroscopic data.