Structural Studies of a Copper(II) Complex with Inequivalent 2-Acetylpyridine 3-Piperidylthiosemicarbazonato Ligands and a Nickel(II) Complex with Different Modes of Coordination by the Two Thiosemicarbazonato Moieties of 1-Phenylglyoxal BisN(4)-diethylthiosemicarbazone | Publicación