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Flexible Metal Organic Framework {[Ni(DpBz)][Ni(CN)4]}n, DpBz=1,4-Bis(4-pyridyl)benzene) with an Unusual Ni-N Bond



Winnie K. Wong-Ng, Jeffrey T. Culp, Yu-Sheng Chen, Jeffrey R. Deschamps, Christopher Matranga


The flexible metal organic framework (MOF), Ni(L)[Ni(CN)4], (L= 1,4-Bis(4-pyridyl)benzene, or DpBz) is a novel 3D porous material that adopts Hofmann type structure. The purple monoclinic Ni-DpBz crystal assumes a pillared structure with layers defined by 2-D Ni[Ni(CN)4]n nets and DpBz ligands as pillars, linking between coordinated Ni sites. In addition to the hysteretic adsorption/desorption feature of Ni-DpBz , we discovered that in half of the parallelepiped-shape space enclosed by the pillars and nets, an additional DpBz ligand was found to link between the open ends of two four-fold Ni sites, resulting in an unusual 5-fold pseudo square-pyramid environment for Ni and a significantly long Ni-N distance of 2.365(5) Å. The presence of disordered dimethyl sulfoxide (DMSO) solvent molecules gives rise to the formula of Ni(DpBz)[Ni(CN)4] ·¿DpBz·0.53DMSO.
Crystal Growth & Design


Carbon dioxide capture, flexible metal organic framework, Ni(1, 4-Bis (4-pyridyl)benzene)[Ni(CN)4], crystal structure, synchrotron radiation


Wong-Ng, W. , Culp, J. , Chen, Y. , Deschamps, J. and Matranga, C. (2015), Flexible Metal Organic Framework {[Ni(DpBz)][Ni(CN)4]}n, DpBz=1,4-Bis(4-pyridyl)benzene) with an Unusual Ni-N Bond, Crystal Growth & Design, [online], (Accessed May 18, 2024)


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Created November 26, 2015, Updated November 10, 2018