Chai, F.-Y.; Zhang, X.-Y.; Zhao, M.-M.; Wang, Z.-K.; Meng, J.-L.; Zhang, L.-S.; Wang, K.-T. Synthesis and Characterization of Transition Metal Complexes With 2,2’-[(Propylene-1,3-diyldioxy)bis(nitrilomethylidyne)]diphenol. ajc 2013, 25, 9362-9364.