Supramolecule-to-supramolecule transformations of coordination-driven self-assembled polygons |
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Authors: | Zhao Liang Northrop Brian H Stang Peter J |
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Institution: | Department of Chemistry, University of Utah, 315 South 1400 East, Room 2020, Salt Lake City, Utah 84112, USA. liangz@chem.utah.edu |
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Abstract: | Two types of supramolecular transformations, wherein a self-assembled Pt(II)-pyridyl metal-organic polygon is controllably converted into an alternative polygon, have been achieved through the reaction between cobalt carbonyl and the acetylene moiety of a dipyridyl donor ligand. A 6 + 6] hexagon is transformed into two 3 + 3] hexagons, and a triangle-square mixture is converted into 2 + 2] rhomboids. 1H and 31P NMR spectra are used to track the transformation process and evaluate the yield of new self-assembled polygons. Such transformed species are identified by electrospray ionization (ESI) mass spectrometry. This new kind of supramolecule-to-supramolecule transformations provides a viable means for constructing, and then converting, new self-assembled polygons. |
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