一个步骤的合成和结构的oligo ((spiro-orthocarbonate) 的.)
David T Vodak1, Matthew Braun, Lykourgos Iordanidis
1Materials Design and Discovery Group, Deparment of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, USA.
Journal of the American Chemical Society
|May 2, 2002
概括
研究人员从五甲基和四甲基碳酸盐中合成了一种新型晶体材料C6H8O4. 这种螺旋-寡合化合物具有独特的单克林晶体结构.
科学领域:
- 材料科学 材料科学 材料科学
- 固态化学 固态化学
- 晶体学 晶体学是指结晶学.
背景情况:
- 五乙醇是一种多功能聚合物,在聚合物和爆炸物中具有应用.
- 四甲基甲碳酸盐是各种有机和无机化合物的前体.
- 具有定义结构的新型晶体材料的合成对于推进材料科学至关重要.
研究的目的:
- 为了合成和表征一种新的晶体材料从pentaerythritol和tetraethylorthocarbonate.
- 为了确定合成材料的化学公式和晶体结构.
- 探索螺旋-寡合结构在材料设计中的潜力.
主要方法:
- 化学合成涉及加热pentaerythritol和 tetraethylorthocarbonate 在260°C 12小时.
- 使用13C CPMAS NMR,CHN分析,FT-IR,电子衍射和X射线粉末衍射进行材料表征.
- 通过瑞特维尔德分析来确定晶体结构.
主要成果:
- 一种具有化学公式C6H8O4的白色晶体材料被成功合成.
- 该材料具有单临晶体结构,细胞参数a = 9.167 Å,b = 5.681 Å,c = 5.880 Å,β = 90.0°,属于空间组I2.2.
- 晶体结构由六角排列的螺旋-寡合链组成.
结论:
- 甲和四甲甲酸碳酸盐之间的反应产生了一种具有明确的螺旋-寡合体结构的新型晶体材料.
- 具有特征的单临床结构为这些独特链条的组装提供了洞察力.
- 这项研究有助于理解晶体材料合成和复杂有机结构的形成.
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