FIGURE 1. The MOF-5 structure and its topology.

From the following article:

Reticular synthesis and the design of new materials

Omar M. Yaghi, Michael O'Keeffe, Nathan W. Ockwig, Hee K. Chae, Mohamed Eddaoudi and Jaheon Kim

Nature 423, 705-714(12 June 2003)

doi:10.1038/nature01650

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a, The MOF-5 structure shown as ZnO4 tetrahedra (blue polyhedra) joined by benzene dicarboxylate linkers (O, red and C, black) to give an extended 3D cubic framework with interconnected pores of 8 Å aperture width and 12 Å pore (yellow sphere) diameter. (Yellow sphere represents the largest sphere that can occupy the pores without coming within the van der Waals size of the framework). b, The topology of the structure (primitive cubic net) shown as a ball-and-stick model. c, The structure shown as the envelopes of the (OZn4)O12 cluster (red truncated tetrahedron) and benzene dicarboxylate (BDC) ion (blue slat). Note that opposing slats are all at 90°.

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