![]() ( C) One-dimensional zigzag ribbon assembled by the metal complexes with at least two Hbim −1 ligands in cis-configuration. ( B) One-dimensional linear chain assembled by the metal complexes with trans-configuration coordinated by two Hbim −1 ligands. ( A) “Zero-dimensional dimer” constructed by the complementary intermolecular hydrogen bonds between Hbim −1 ligands in the metal complexes coordinated by only one Hbim −1 ligand. ![]() ![]() 1) of a dimer ( A), a linear chain ( B), a zigzag ribbon ( C), a honeycomb sheet ( D), and a helical chain ( E), respectively (see data sheets, which are published as supporting information on the PNAS web site, Figure 1 Schematic representations of multidimensional assemblies formed by transition-metal complexes with controlled configurations that regulate the number of Hbim −1 ligands. As the result, we can systematically produce five types of preprogramming superstructures (shown in Fig. In this report, four types of self-organizing superstructures with infinite chains are identified by designing four neutral Hbim −1 complexes with altered metal coordination spheres. We have tried to eliminate the counter ion and to create a new superstructure with an infinite chain without the effect of counter ions on the assembly of metal complexes constructed from the H-bonding dimer units like Scheme S1. In these cases, the nature of the metal anion assembly was affected by the nature and size of the counter cation. The previously reported −1, obtained by self-organization with an Ni(II) ion and an Hbim −1, forms a variety of multidimensional superstructures with long-range ordered arrays ( 21).
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