Self-assembly of giant structures from a large number of small components is one of the most exciting challenges in current chemistry for the bottom-up control of chemical structures on the nano-scale. Metal-ligand self-assembly provides highly efficient and powerful approach to discrete giant structures, and several groups have been intensively studying the self-assembly of coordination polyhedra whose framework topologies are described by Platonic or Archimedian solids. From four-coordinated metals (M) and divalent bridging ligands (L), a series of MnL2n regular/semi-regular polyhedra, in which four edges meet at ever vertex, can be formed with geometrically restricted n values of 6, 12, 24, 30, and 60.1 The most important structure parameter that determines the n value is the bend angle (θ) of the ligand component and we have previously shown that θ values below 127° give M12L24 (n = 12) while those above 135° does M24L48 (n = 24) both exclusively.2 Here we report that, by further expanding the θ value (up to 149°), we succeeded in the self-assembly of M30L60 and M48L96 complexes. Interestingly, the M48L96 polyhedron does not belong to Platonic or Archimedian solids, but to a new family of pseudo Archimedian solids in which component square is not perfectly planar. Reference: 1. A review: K. Harris, D. Fujita, and M. Fujita Chem. Commun. 2013, 49, 6703-6712. 2. Q.-F. Sun, J. Iwasa, D. Ogawa, Y. Ishido, S. Sato, T. Ozeki, Y. Sei, K. Yamaguchi, and M. Fujita Science 2010, 328, 1144-1147.

Mathematical control in the self-assembly of giant Mn L2n polyhedral complexes

251st National Meeting (2016)

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