S. Russell Seidel

Template and Guest Effects on the Self‐Assembly of a Neutral and Homochiral Helix

Coordination-driven assembly based on manganese(II) centers and flexible 1,3-bis(4-pyridyl)propane leads to the solid-state formation of electronically neutral, self-templated homochiral helices, closed ring structures, and racemic mixtures of helices depending upon the presence or absence of guests such as benzene and 1,2-diphenylethane.

Self-assembly of nanoscopic coordination cages of D3h symmetry

A family of nanoscale-sized supramolecular cage compounds with a trigonal prismatic framework was prepared by means of spontaneous self-assembly from the combination of a predesigned molecular “clip” with tritopic pyridyl subunits. As confirmed by x-ray crystallography, the smallest structure of the reported series is ≈1 × 2 nm and possesses a nitrate anion incarcerated inside its molecular cavity. The largest structure has dimensions of ≈ 1 × 4 nm.

One-dimensional coordination polymers based on first-row transition metals: A solid-state study of weak backbone interactions

We present further data on the solid-state structures of one-dimen- sional coordination polymers based upon dipositive transition metal hexafluoro- acetylacetonate (hfacac) complexes. A variety of linking subunits are employed in order to investigate and probe the relatively weak interactions that make up the backbones of these polymers. Reported in this study are metal complexes containing manganese, zinc, copper, and cobalt and a range of donor building blocks encom- passing an array of bonding motifs, including pyridyl-metal, pyridyl(N-oxide)- metal, and hydrogen bonding. The specific linkers utilized are 4,4-dipyridyl N,N- dioxide hydrate, 2,5-bis(4-ethynylpyridyl)furan, 4,4-trimethylenedipyridine, and trans-1-(2-pyridyl)-2-(4-pyridyl)-ethylene. A detailed discussion of the products is presented, as is a comparison to known compounds of a similar nature. All com- pounds are characterized via single-crystal X-ray diffraction and elemental analysis for the bulk of the sample.