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首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Interactions between Carboxylic Acids and Heteroaromatics: A Rotational Study of Formic Acid-Pyridine
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Interactions between Carboxylic Acids and Heteroaromatics: A Rotational Study of Formic Acid-Pyridine

机译:羧酸和杂芳族化合物之间的相互作用:甲酸-吡啶的旋转研究

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摘要

The rotational spectra of four isotopologues of the 1:1 complex between formic acid and pyridine show that the two units are linked together through a "classical" (OH center dot center dot center dot N) and a weak (CH center dot center dot center dot O) hydrogen bond. The molecular system appears quite rigid and no effects of the internal motions have been observed in the spectrum. The dissociation energy obtained from the centrifugal distortion by applying an approximate model, 39.8 kJ/mol, is quite similar to the ab initio value, 41.7 kJ/mol. Its relatively high value suggests a small charge transfer to take place.
机译:甲酸和吡啶之间1:1配合物的四个同位素的旋转光谱表明,这两个单元通过“经典”(OH中心点中心点中心点N)和弱(CH中心点中心点中心点)连接在一起点O)氢键。分子系统看起来很刚性,在光谱中没有观察到内部运动的影响。通过应用近似模型39.8 kJ / mol从离心畸变获得的离解能与从头算值41.7 kJ / mol非常相似。其相对较高的值表明将进行少量电荷转移。

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