Lanthanide complexes thioethers

The higher affinity of U(III) also for S- donor ligands comparing to trivalent lanthanides can be well appreciated during the complexation with crown thioethers. Again, a comparative study among the crystal structures of trivalent... 

Noteworthy by their virtual absence in this review are the lanthanides [158] and actinides, whose crown thioether chemistry is as yet untouched. The propensity of these ligands to stabilize low oxidation states if carried over to the lanthanides engenders the possibility of synthesizing, e.g. complexes of divalent lanthanides (e.g. Sm(II), Eu(II), Yb(II)). While the lanthanides and actinides as class a elements... 

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