Metal-Ligand Polyhedra

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Each palladium ion is coordinated by <scene name='Metal-Ligand_Polyhedra/Polyhedron_main_chains/6'>four nitrogens</scene>. The nitrogens are bridged by a <scene name='Metal-Ligand_Polyhedra/Single_main_chain_ligand/1'>dipyridylthiophene</scene> ("ligand").
Each palladium ion is coordinated by <scene name='Metal-Ligand_Polyhedra/Polyhedron_main_chains/6'>four nitrogens</scene>. The nitrogens are bridged by a <scene name='Metal-Ligand_Polyhedra/Single_main_chain_ligand/1'>dipyridylthiophene</scene> ("ligand").
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<scene name='Metal-Ligand_Polyhedra/Full_polyhedron/1'>complete M24L48 polyhedron</scene>
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<scene name='Metal-Ligand_Polyhedra/Full_polyhedron/2'>complete M24L48 polyhedron</scene>
==References and Notes==
==References and Notes==

Revision as of 00:36, 12 June 2010

  UNDER DEVELOPMENT: This article is a work in progress, and is incomplete.  
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Metal ions with square planar coordination, when mixed with suitable ligands, can self-assemble into polyhedra of various sizes. Geometrical constraints limit the number of metal ions (vertices) to 6, 12, 24, 30, or 60 for entropically favored regular or semiregular polyhedra[1]. Shown at right () is the "main chain" of the largest such structure reported as of May, 2010[2]. form the vertices of a 26-face polyhedron[3]. Three square faces and one triangular face meet at each vertex.

Each palladium ion is coordinated by . The nitrogens are bridged by a ("ligand").

References and Notes

  1. Coxeter, H. S. M., Regular Polytopes, Dover Publications, New York, 3rd ed., 1973.
  2. Sun QF, Iwasa J, Ogawa D, Ishido Y, Sato S, Ozeki T, Sei Y, Yamaguchi K, Fujita M. Self-assembled M24L48 polyhedra and their sharp structural switch upon subtle ligand variation. Science. 2010 May 28;328(5982):1144-7. Epub 2010 Apr 29. PMID:20430973 doi:10.1126/science.1188605
  3. M24L48 forms a 26-faced rhombicubooctahedron with 18 square faces and 8 triangular faces. In this instance, the rectangular faces are very close to squares 13.35 Ångstroms on a side.

Models

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