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- W2066954787 abstract "In 2,4-diamino-5-(4-chlorophenyl)-6-ethylpyrimidin-1-ium (pyrimethaminium, PMNH) 4-methylbenzoate, C12H14ClN4+·C8H7O2−, (I), pyrimethaminium 3-hydroxypicolinate, C12H14ClN4+·C6H4NO3−, (II), and pyrimethaminium 2,4-dichlorobenzoate, C12H14ClN4+·C7H3Cl2O2−, (III), the PMNH cations interact with the carboxylate groups of the corresponding anion via nearly parallel N—H⋯O hydrogen bonds, forming R22(8) ring motifs. A description of the observed arrays of quadruple hydrogen bonds in (I) and (II) in terms of hydrogen donors and acceptors (the DA model), their graph-set motifs and the resulting supramolecular ladder is given. In (III), supramolecular chains along the b axis and helical chains along the a axis are formed via N—H⋯O hydrogen bonds involving the 2-amino and 4-amino groups of the PMNH cation, respectively. Weak Cl⋯Cl interactions are also found in (III)." @default.
- W2066954787 created "2016-06-24" @default.
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- W2066954787 date "2010-02-03" @default.
- W2066954787 modified "2023-09-23" @default.
- W2066954787 title "Hydrogen-bonded supramolecular motifs in pyrimethaminium 4-methylbenzoate, pyrimethaminium 3-hydroxypicolinate and pyrimethaminium 2,4-dichlorobenzoate" @default.
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- W2066954787 doi "https://doi.org/10.1107/s0108270110002337" @default.
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