Triprolidine Tetrachlorocuprate(II)

The crystal structure of (E)-2-[3-(1-pyrrolidinio)-1-(p-tolyl)-1-propenyl]pyridinium tetrachlorocopper(II), (C₁₉H₂₄N₂)[CuCl₄], contains the dication of triprolidine, a potent anti-allergic agent. The CuCl₄^2- anion exhibits a flattened-tetrahedral geometry and is hydrogen bonded through two Cl atoms to the same cation, forming independent anion-cation pairs.

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