Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/70331
標題: 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
作者: Lai, L.L.
Lee, L.J.
Luo, D.W.
Liu, Y.H.
Wang, Y.
關鍵字: bipyridine
molecular crystals
liquid crystals
neumatic
mesogenic
center-dot-o
hydrogen-bonds
complexation
donor
期刊/報告no:: Journal of Structural Chemistry, Volume 49, Issue 6, Page(s) 1137-1140.
摘要: 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.
URI: http://hdl.handle.net/11455/70331
ISSN: 0022-4766
文章連結: http://dx.doi.org/10.1007/s10947-008-0193-2
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