Influence of dicarboxylic acid structure on tape networks in co-crystals of 2-pyridone

Crystal Engineering Pub Date : 2002-03-01 DOI:10.1016/S1463-0184(02)00008-4

M.R. Edwards , W. Jones , W.D.S. Motherwell

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引用次数: 14

Abstract

We report here on the formation of co-crystals of 2-pyridone and several long chain dicarboxylic acids HO₂C(CH₂)_nCO₂H with n an odd number. Supramolecular tapes, illustrating several hydrogen bond motifs, were observed. Co-crystals with malonic acid (n=1) crystallise in the space group P2/n, with a=19.213, b=4.031, c=19.508, β=114.67°; glutaric acid (n=3) in P-1, with a=5.437, b=9.592, c=11.797, α=66.50°, β=81.64°, γ=83.00°; pimelic acid (n=5) in C2/c, with a=19.828, b=5.135, c=17.401, β=102.98°; and azelaic acid (n=7) in P2₁/c, with a=16.644, b=5.036, c=18.213, β=103.09°. Tape compositions of both 1:1 acid:base and 1:2 acid:base were obtained suggesting that tape stochiometry is independent of the number of constituent carbon atoms in the acid backbone. The results also suggest that the 2-pyridone dimer may in certain cases act as a supramolecular analogue of phenazine.

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二羧酸结构对2-吡啶酮共晶带网络的影响

本文报道了2-吡啶酮与几种n为奇数的长链二羧酸HO2C(CH2)nCO2H共晶的形成。观察到几个氢键基序的超分子带。与丙二酸(n=1)共晶在P2/n空间群中结晶，a=19.213, b=4.031, c=19.508， β=114.67°;戊二酸(n = 3), p - 1 = 5.437, = 9.592 b, c = 11.797,α= 66.50°,β= 81.64°,γ= 83.00°;丙烯酸(n=5)在C2/c中，a=19.828, b=5.135, c=17.401， β=102.98°;α =16.644， α =5.036， α =18.213， β=103.09°。得到了1:1酸碱和1:2酸碱的条带组成，表明条带的随机计量与酸主链中组成碳原子的数目无关。结果还表明，2-吡啶酮二聚体在某些情况下可能作为非那嗪的超分子类似物。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Crystal Engineering

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