(2,2'-bipyridine-kappa(2)N,N')(2,3-naphthalenediolato-kappa(2)O,O')palladium(II) and (2,2'-biquinoline-kappa(2)N,N')(2,3-naphthalenediolato-kappa(2)O,O')palladium(II).

In the title compounds, [Pd(C(10)H(6)O(2))(C(10)H(8)N(2))], (I), and [Pd(C(10)H(6)O(2))(C(18)H(12)N(2))], (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.