title: Supramolecule-to-supramolecule transformations of coordination-driven self-assembled polygons.
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.
authors.affiliation: Department of Chemistry, University of Utah, 315 South 1400 East, Room 2020, Salt Lake City, Utah 84112, USA. liangz@chem.utah.edu
authors.forename: Liang
authors.initials: L
authors.lastname: Zhao
authors.forename: Brian H
authors.initials: BH
authors.lastname: Northrop
authors.forename: Peter J
authors.initials: PJ
authors.lastname: Stang
mesh_terms: D015082:2,2'-Dipyridyl / Q000737:chemistry; D000480:Alkynes / Q000737:chemistry*; D003035:Cobalt / Q000737:chemistry*; D003500:Cyclization; D046911:Macromolecular Substances / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D009942:Organometallic Compounds / Q000737:chemistry; D021241:Spectrometry, Mass, Electrospray Ionization
chemical_list: D000480:Alkynes; D046911:Macromolecular Substances; D009942:Organometallic Compounds; D003035:Cobalt; D015082:2,2'-Dipyridyl