Buy article online - an online subscription or single-article purchase is required to access this article.
metal-organic compounds
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 CuCl42- anion exhibits a flattened-tetrahedral geometry and is hydrogen bonded through two Cl atoms to the same cation, forming independent anion-cation pairs.