(2,2′-bipyridine-κ2N,N′)(2,3-naphthalenediolato-κ2O,O′)palladium(II) and (2,2′-bipuinoline-κ2N,N′)(2,3-naphthalenediolato-κ2O,O′)palladium(II)

In the title compounds, [Pd(C10H6O2)(C10H8N2)], (I), and [ Pd(C10H6O2)(C18H12N2)], (II), each Pd-II atom has a similar distorted cis-planar four-coordination geometry involving two O atoms of the 2,3-naphthalenediolate dianion and two N atoms of the 2,2'-bipyridine or 2,2'-biquinoline ligand. The overall structure of (I) is essentially planar, but that of (II) is not, as a result of intramolecular overcrowding leading to bowing of the biquinoline ligand.