Dichloro[6,7-dimethyl-2,3-bis(2-pyridyl-N)quinoxaline]palladium(II) Monohydrate

The title compound, [PdCl₂(C₂₀H₁₆N₄)].H₂O, contains the first example of 6,7-dimethyl-2,3-bis(2-pyridyl)quinoxaline chelating a square-planar-coordinated metal via its pyridine-N atoms. In the solid state, pairs of centrosymmetrically related molecules form a `head-to-tail' arrangement with a significant graphitic interaction between the parallel aromatic rings. The layers formed by these pairs are interconnected by Cl...H—C bonds. Molecules of water of crystallization are interposed between these layers.

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