Lanthanide complexes classification

Busch DH (2005) First Considerations Principles, Classification, and History. 249 in press Bussiere G, Beaulac R, Belisle H, Lescop C, Luneau D, Rey P, Reber C (2004) Excited States and Optical Spectroscopy of Nitronyl Nitroxides and Their Lanthanide and Transition Metal Complexes. 241 97-118 Cadierno V, see Majoral J-P (2002) 220 53-77 Camara M, see Chhabra SR (2005) 240 279-315 Caminade A-M, see Majoral J-P (2003) 223 111-159 CantriU SJ, see Arico F (2005) 249 in press... 

In many cases, lanthanide reactions can either be assigned exclusively to one of these two classes, or they show deviations that the classification makes understandable. In Fig. 1.2, we plot the values of AH for the complexing of the tripositive aqueous ions by EDTA (aq), a reaction in which the 4f electrons are conserved. The irregularities are negligible at the chosen scale. Also shown are the values of AH (MCl3,s) which refer to ... 

Although several factors appear to mitigate against their formation, many complex species derived from the lanthanide ions have been described (36). Some of these appear to exist only as ion pairs in solution and do not have sufficient stability to permit them to carry through series of reactions without concomitant dissociation. Others exist only in the solid state and dissociate or decompose upon dissolution. Still others are of sufficient stability to exist as such, both in solution and as isolable solids. Essentially all of the species described are derived from the tripositive ions, and essentially no information is available relative to complex species in nonaqueous systems. A broad classification of typical species is given in Table I (36). 

---