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Single crystal XRD study of 4,4′-dipyridyl — p-ethoxybenzoic acid and N,N′-dipyridylpiperazine — p-ethoxybenzoic acid co-crystals: Direct evidence of H-bond interaction in the corresponding liquid-crystalline mesogenic phases

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Abstract

Supramolecular H-bonded complexes formed between p-ethoxybenzoic acid and 4,4′-dipyridyl or N,N′-dipyridylpiperazine were obtained as nematic liquid-crystalline phases. The corresponding crystals suitable for single crystal X-ray analysis were isolated and investigated. The stoichiomtery of complex 1 is (4,4′-dipyridyl)-2(p-ethoxybenzoic acid) and that of complex 2 is (N,N′-dipyridylpiperazine)-2(p-ethoxybenzoic acid). The molecular packing observed in the crystal structures investigated indicates that the mesogenic phases of the complexes are induced by H-bond interactions.

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Authors and Affiliations

  1. Department of Applied Chemistry, National Chi Nan University, Puli, Nantou, 545, Taiwan

    L. -L. Lai & L. -J. Lee

  2. Instrumentation Center, National Chung-Hsing University, Taichung, 402, Taiwan

    D. -W. Luo

  3. Instrumentation Center and Department of Chemistry, National Taiwan University, Taipei, 106, Taiwan

    Y. -H. Liu & Y. Wang

Authors
  1. L. -L. Lai
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  2. L. -J. Lee
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  3. D. -W. Luo
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  4. Y. -H. Liu
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  5. Y. Wang
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Correspondence to L. -L. Lai.

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Original Russian Text Copyright © 2008 by L.-L. Lai, L.-J. Lee, D.-W. Luo, Y.-H. Liu, and Y. Wang

The text was submitted by the authors in English. Zhurnal Strukturnoi Khimii, Vol. 49, No. 6, pp. 1175–1178, November–December, 2008.

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Lai, L.L., Lee, L.J., Luo, D.W. et al. Single crystal XRD study of 4,4′-dipyridyl — p-ethoxybenzoic acid and N,N′-dipyridylpiperazine — p-ethoxybenzoic acid co-crystals: Direct evidence of H-bond interaction in the corresponding liquid-crystalline mesogenic phases. J Struct Chem 49, 1137–1140 (2008). https://doi.org/10.1007/s10947-008-0193-2

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  • DOI: https://doi.org/10.1007/s10947-008-0193-2

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