一个新的自我穿透的均网, (8,4) (或8(6)),包含平面四坐标节点
Ming-Liang Tong1, Xiao-Ming Chen, Stuart R Batten
1School of Chemistry & Chemical Engineering and State Key Laboratory of Optoelectronic Materials & Technologies, Sun Yat-Sen University, Guangzhou 510275, PR China. cestml@zsu.edu.cn
Journal of the American Chemical Society
|December 25, 2003
概括
研究人员利用热水反应合成了基于的新型协调聚合物. 在不同温度下观察到不同的多态,揭示了独特的3D网络拓和1D链.
科学领域:
- 材料科学 材料科学 材料科学
- 晶体学 晶体学是指结晶学.
- 协调化学 协调化学
背景情况:
- 协调聚合物是具有多样化应用的材料,由它们的可调节结构驱动.
- 水热合成是创建晶体材料的关键方法.
- 了解网络拓对于设计具有特定性质的材料至关重要.
研究的目的:
- 通过热水合成研究基于的协调聚合物的形成.
- 描述在不同温度下获得的不同多态的特征.
- 阐明合成材料的独特网络拓.
主要方法:
- 热水反应涉及3 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 酸 (pyaraH),NiCl2和NaOH的热水反应.
- 在不同的温度 (180°C和150°C) 结晶.
- 由此产生的多态的结构分析.
主要成果:
- 两个多态的形成:α-Ni ((pyara) 2 ((H2O) 2在180°C和β阶段在150°C.
- 阿尔法阶段呈现出一种新的,自我透的,四坐标 (8,4) 网络拓 (Schläfli 符号 86),与以前已知的统一网络不同.
- 贝塔阶段由1D链组成,通过键相互连接成一个3D网络.
结论:
- 热水合成为各种协调聚合物结构提供了一条途径.
- 已经确定了一种以前未被识别的基本网络拓.
- 温度在决定协调聚合物的最终结构和维度方面起着至关重要的作用.
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