Hetero-bimetallic 2D coordination network constructed by azacrown ether carboxylic acid with lanthanide(III) and sodium ions

Reaction of carboxyethyl substituted azacrown ether ligand (L) with La(III)/Eu(III) ions produces novel hetero-bimetallic 2D networks which were built up by Ln-L coordinating subunits and 1D Na-O bridging chains.