洞察SBU凝聚在mg协调和超分子框架中的感应:一个结合实验和理论研究的研究
Ana E Platero-Prats1, Víctor A de la Peña-O'Shea, Davide M Proserpio
1Department of New Architectures in Materials Chemistry, Instituto de Ciencia de Materiales de Madrid, ICMM-CSIC, c/Sor Juana Inés de la Cruz, 3, 28049 Madrid, Spain.
Journal of the American Chemical Society
|February 23, 2012
概括
合成过程在溶热条件下影响协调聚合物形成. 这项研究揭示了Mg(2+) 化合物如何形成多样化的结构,网络拓影响脱水行为.
科学领域:
- 材料化学 材料化学
- 晶体学 晶体学是指结晶学.
- 计算化学计算化学
背景情况:
- 协调聚合物 (CPs) 可以在不同的合成条件下共存.
- 了解控制CP形成的因素对于材料设计至关重要.
研究的目的:
- 研究合成过程对共存协调聚合物的分离的影响.
- 阐明基于Mg2+的系统中不同相的形成背后的驱动力.
主要方法:
- 在水/溶液热条件下的实验合成.
- 计算研究 (密度函数理论) 用于确定相对能量和相位形成.
- 用于结构特征的X射线衍射.
- 键分析和超分子网络拓学研究.
- 脱水研究.脱水研究.
主要成果:
- 合成了五种具有不同结构类型的新的Mg2+) 协调聚合物 (AEPF-14,-15,-16,-17).
- AEPF-14表现出两个多态 (α-和β-).
- AEPF-15和AEPF-16是1D金属有机框架 (MOF),其中AEPF-16具有螺旋结构.
- AEPF-17是一个二维层结构.
- 计算研究确定了相位形成的相对能量和驱动力.
- 键在超分子网络拓学中起着重要作用.
- 脱水研究表明,超分子网络的拓类型在脱水过程中决定了结构变化.
结论:
- 合成条件显著影响协调聚合物结构的多样性.
- 计算方法对于预测和理解相位形成非常有价值.
- 超分子网络拓是这些Mg化合物对脱水的结构反应的关键因素.
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