Crystal structures of 4-methoxybenzoic acid-1,3-bis(pyridin-4-yl)propane (2/1) and biphenyl-4,4′-dicarboxylic acid-4-methoxypyridine (1/2)

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Abstract

The crystal structures of two hydrogen-bonded compounds, namely 4-methoxybenzoic acid-1,3-bis(pyridin-4-yl)propane (2/1), C13H14.59N2·C8H7.67O3·C8H7.74O3, (I), and biphenyl-4,4′-dicarboxylic acid-4-methoxypyridine (1/2), C14H9.43O4·C6H7.32NO·C6H7.25NO, (II), have been determined at 93 K. In (I), the asymmetric unit consists of two crystallographically independent 4-methoxybenzoic acid molecules and one 1,3-bis(pyridin-4-yl)propane molecule. The asymmetric unit of (II) comprises one biphenyl-4,4′-dicarboxylic acid molecule and two independent 4-methoxypyridine molecules. In each crystal, the acid and base molecules are linked by short O - H⋯N/N - H⋯O hydrogen bonds, in which H atoms are disordered over the acid O-atom and base N-atom sites, forming a linear hydrogen-bonded 2:1 or 1:2 unit of the acid and the base. The 2:1 units of (I) are linked via C - H⋯π, π-π and C - H⋯O interactions into a tape structure along [101], while the 1:2 units of (II) form a double-chain structure along [-101] through π-π and C - H⋯O interactions.

Original languageEnglish
Pages (from-to)1192-1196
Number of pages5
JournalActa Crystallographica Section E: Crystallographic Communications
Volume73
DOIs
Publication statusPublished - 2017

Keywords

  • 1,3-bis(pyridin-4-yl)propane
  • 4-methoxybenzoic acid
  • 4-methoxypyridine
  • biphenyl-4,4′-dicarboxylic acid
  • crystal structure

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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