Polynuclear lanthanide complexes crystal structure

Berthet, J.C., Nierlich, M., Miquel, Y., Madic, C., Ephritikhine, M. 2005. Selective complexation of uranium(III) over lanthanide(IH) triflates by 2,2 6, 2"-terpy ridine. X-ray crystal structures of [MfOTf fterpy ] and [M(OTf)2(terpy)2(py)][OTf](M = Nd, Ce, U) and of polynuclear (x-oxo uranium(IV) complexes resulting from hydrolysis. Journal of the Chemical Society, Dalton Transactions 2 369-379. 

Interestingly, the mathematical treatment leading to Eq. (44) is very general and any paramagnetic system, for which Bleaney s approach requires two independent crystal-field parameters may benefit from its use for testing isostructurality, as demonstrated with the structural analyses of rhombic mononuclear (Terazzi et al., 2006) and polynuclear (Ouali et al., 2004) lanthanide complexes. 

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