CHED 192 |
| Ever since the birth of stereochemistry in 1874 when van't Hoff (and Le Bel) proposed “the extension into space of the structural formula”, there has been an open question with regards to the existence of molecules that belong to the point group symmetry of Tetrahedron (T), Octahedron (O) or Icosahedron (I). Molecules having T, O or I symmetry are chiral, but possess multiple rotational symmetries. Description of the actual structures for such molecules, real or hypothetical, is implied to be impossible by textbook statements such as “Molecules belonging to T and O (and I) are unknown.”; “(T, O, I symmetries) is rarely if ever encountered in Nature.”, and has continuously challenged the imagination of stereochemists. In this poster, we present a general strategy to construct these highly symmetric but chiral molecules that satisfy rigorously the requirement for T, O or I symmetry with essentially endless possible structures and functional groups. |
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General Posters
7:30 PM-9:30 PM, Sunday, March 25, 2007 Hyatt Regency Chicago -- Riverside Center, Poster
Division of Chemical Education |