Synthesis, structure, solid-state thermal decomposition and magnetic properties of binuclear Nd, Gd and Eu cymantrenecarboxylates

► New binuclear lanthanide cymantrenecarboxylate complexes were synthesized. ► Thermal decay of Ln cymantrenecarboxylates under air results in LnMn2O5 and Mn2O3. ► Antiferromagnetic coupling between the Gd atoms in Gd cymantrenecarboxylate was found.