Alignment of Acentric Units in Infinite Chains: A "Lock and Key" Model
Alignment of Acentric Units in Infinite Chains: A "Lock and Key" Model
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DOI：
10.1021/cg400908f
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发表时间：
2013-09-01
影响因子：
3.8
通讯作者：
Poeppelmeier, Kenneth R.
中科院分区：
文献类型：
--
作者：
Gautier, Romain;Poeppelmeier, Kenneth R.
由非中心结构单元构建的极性链对于研究固态中极性排列的驱动机制具有重要意义。我们尝试在混合金属氧化物氟化物M'(2,2'-bpy)(H2O)(2)MOxF6-x中设计极性链，化合物[M'/M = Cu/Ti, Cu/V, Cu/Nb, Cu/Mo， Zn/Mo和Zn/W]成功地使用了偏心阴离子[MOxF6-x，]（2-）和偏心阳离子[M'(2,2'-bpy)(H2O)(2)]（2+）的组合。还揭示了一个新的普遍见解：极性单元的排列可以用“锁和钥匙”模型来描述。讨论了键（无中心单元）和锁（其环境）对无限链极性的影响。
Polar chains built from acentric building units are of importance to investigate the mechanisms driving the polar alignment in the solid state. Our attempts to engineer polar chains in mixed metal oxide fluorides M'(2,2'-bpy)(H2O)(2)MOxF6-x, compounds [M'/M = Cu/Ti, Cu/V, Cu/Nb, Cu/Mo, Zn/Mo, and Zn/W] were successful using a combination of acentric anions [MOxF6-x,](2-) and acentric cations [M'(2,2'-bpy)(H2O)(2)](2+). A new general insight is also revealed: the alignment of polar units can be described with a "lock and key" model. The role of both the key (the acentric unit) and the lock (its environment) on the polarity in infinite chains is discussed.