Chiral three-dimensional microporous nickel aspartate with extended Ni-O-Ni bonding
Chiral three-dimensional microporous nickel aspartate with extended Ni-O-Ni bonding
复制标题
DOI：
10.1021/ja062743b
复制
发表时间：
2006-08-02
影响因子：
15
通讯作者：
Jacobson, Allan J.
中科院分区：
文献类型：
--
作者：
Anokhina, Ekaterina V.;Go, Yong Bok;Jacobson, Allan J.
在利用光学纯的配体和金属稠合多面体结构单元制备纯手性配位聚合物的研究过程中，我们最近报道了一个一维的天冬氨酸镍配合物[Ni_2 O（L-Asp）（H_2 O）（2）]中心点4 H（2）O（1），它是基于具有扩展的Ni-O-Ni键的螺旋链。在这里，我们报道了一个新的天冬氨酸镍[Ni-2.5（OH）（L-Asp）（2）]中心点6.55 H（2）O（2），其具有在较高pH下形成的三维Ni-O-Ni连接性，并且基于与1中相同的螺旋，其通过额外的镍八面体连接以产生具有一维通道的手性开放框架，其最小货车范德华尺寸为8 x 5埃。2的晶体结构通过在10 × 10 × 240 μ m晶体上的同步加速器单晶X射线衍射确定。
In the course of our investigation aimed at the preparation of homochiral coordination polymers using readily available in optically pure form ligands and building blocks of condensed metal polyhedra, we recently reported a one-dimensional nickel aspartate compound [Ni2O(L-Asp)(H2O)(2)]center dot 4H(2)O (1) based on helical chains with extended Ni-O-Ni bonding. Here we report a new nickel aspartate [Ni-2.5(OH)(L-Asp)(2)]center dot 6.55H(2)O (2) with a three-dimensional Ni-O-Ni connectivity that forms at a higher pH and is based on the same helices as in 1 which are connected by additional nickel octahedra to generate a chiral open framework with one-dimensional channels with minimum van der Waals dimensions of 8 x 5 angstrom. The crystal structure of 2 was determined by synchrotron single-crystal X-ray diffraction on a 10 x 10 x 240 mu m crystal.