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首页> 外文期刊>Crystal growth & design >Enforcing molecule's π-Conjugation and consequent formation of the acid-acid homosynthon over the acid-pyridine heterosynthon in 2-anilinonicotinic acids
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Enforcing molecule's π-Conjugation and consequent formation of the acid-acid homosynthon over the acid-pyridine heterosynthon in 2-anilinonicotinic acids

机译:增强分子的π-共轭作用,从而在2-苯胺基烟酸中的酸-吡啶杂合子上形成酸-酸同合子

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摘要

Two different synthons, acid-acid and acid-pyridine, are present in the crystal structures of 2-(phenylamino)nicotinic acid. The intermolecular hydrogen-bonding motifs are determined by molecular conformation and conformational energy. By covalently linking electron-withdrawing groups to the phenyl ring, it is possible to strengthen the molecule's global π-conjugation and thereby lead to only the acid-acid homosynthon in crystal packing and prohibit the competing acid-pyridine heterosynthon.
机译:在2-(苯基氨基)烟酸的晶体结构中存在两种不同的合成子,酸-酸和酸-吡啶。分子间氢键基序由分子构象和构象能决定。通过将吸电子基团共价连接到苯环上,可以增强分子的整体π共轭作用,从而仅导致晶体堆积中的酸-酸同合子并阻止竞争的酸-吡啶异合子。

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