酒精化合物 - 物理特性和分类类别,包括单,二,多和碳水化合物衍生物
Stefan Spange1, Lysann Kaßner2, Thomas Günter Mayerhöfer3,4
1Department of Polymer Chemistry, Institute of Chemistry, Chemnitz University of Technology, Straße der Nationen 62, 09111, Chemnitz, Germany.
概括
这项研究探讨了摩尔质量,密度和折射率与酒精衍生物的关系. 折射率是基于基和C-H键度预测物理性质的关键.
科学领域:
- 物理化学 物理化学
- 化学物理 化学物理
- 材料科学 材料科学 材料科学
背景情况:
- 了解酒精衍生物的物理性质对于各种化学应用至关重要.
- 现有的模型通常依赖于摩尔质量 (M),密度 (ρ),相对静态导电率 (εr) 和折射率 (nD20).
研究的目的:
- 研究酒精衍生物中M, ρ, εr和nD20之间的关系.
- 确定基组 (NOH) 和C-H键 (NC-H) 的部分摩尔度对er和nD20的影响.
- 评估使用nD20作为关键物理标准的预测模型的可靠性.
主要方法:
- 对酒精衍生物的物理性质 (M, ρ, εr, nD20) 的分析.
- 计算氧化 (NOH) 和C-H键 (NC-H) 的部分摩尔度.
- 克劳西乌斯-莫索蒂和洛伦茨-洛伦茨关系的应用.
- 对于各种酒精衍生物和碳水化合物,nD20与NOH和NC-H的相关性分析.
主要成果:
- 已确立nD20和NC-H或NOH之间的单个相关性,用于单,二,三,四,多水合醇衍生物和碳水化合物.
- 确定nD20作为模型验证中比er更可靠的物理标准.
- 当OH组数超过四个时,在nD20中观察到非线性效应,归因于两极化效应.
- 证明碳水化合物中的nD20主要由NC-H决定.
- 展示了经验ET(30) 极性参数与不同物质的εr之间的关系.
结论:
- 折射率 (nD20) 作为理解和预测酒精衍生物的物理性质的关键参数.
- 特定化学键 (基和C-H) 的度显著影响这些特性.
- 这项研究为开发更准确的化学物质预测模型提供了基础.
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