Additionally, the ferromagnetic exchange we observe occuring through the pym ligand is relatively uncommon for molecular ligands, for example, antiferromagnetic interactions are the norm for pyrazine-bridged MOMs. This ferromagnetic exchange has been previously observed in pym-bridged MOMs, e.g. M(NCS) 2 (pym) 2 (M =Ni and Co), and has been rationalised by a three-atom π-pathway. Our DFT calculations give further credence to the importance of this pathway.