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首页> 外文期刊>Crystal growth & design >Pyridazines in crystal engineering. A systematic evaluation of the role of isomerism and steric factors in determining crystal packing and nano/microcrystal morphologies
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Pyridazines in crystal engineering. A systematic evaluation of the role of isomerism and steric factors in determining crystal packing and nano/microcrystal morphologies

机译:哒嗪在晶体工程中的应用。系统地评估异构和空间因素在确定晶体堆积和纳米/微晶形态方面的作用

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摘要

The present study focuses on understanding hydrogen bond patterns in a series of variably substituted pyridyl-pyridazines as a function of positional isomerism and steric factors. A relatively uncommon multiple hydrogen bond acceptor nature of pyridazine has been observed in the di- and tripyridazine compounds. With increasing aromatic substitution and thereby steric hindrance, a systematic transition has been observed from close-packed to porous solvated assemblies. Distinct morphologies of the organic nano/microparticles, obtained by the precipitation method, indicate that the molecules interact with the solvent system in different ways.
机译:本研究的重点是理解一系列可变取代的吡啶基哒嗪中的氢键模式,这些是位置异构和空间因素的函数。哒嗪在二吡啶和三哒嗪化合物中观察到了相对不常见的多个氢键受体性质。随着芳族取代的增加以及空间位阻的增加,已经观察到从密排到多孔溶剂化组件的系统性转变。通过沉淀法获得的有机纳米/微粒的不同形态表明,分子以不同方式与溶剂系统相互作用。

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