Formation of a sandwich-type supercomplex through second-sphere coordination of functionalized macrocyclic polyamines

A novel sandwich-type supercomplex, namely {[Er(TETA)](2)Er(H2O)(8)}NO3 center dot 10H(2)O(1), has been self-assembled through the conjoined hydrogen bonds by using a tetraaza-functionalized macrocyclic polyamine ligand, showing complete incorporation of the octahydrate lanthanide cation between the second coordination spheres.