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Title: Conformational isomers from rotation of diacetylenic bond in an ethynylpyrene-substituted molecular hinge
Authors: Sankararaman, S.
Venkataramana, G.
Varghese, B.
Keywords: Diacetylenic bond; Room temperature; Chemical bonds; Fluorescence spectroscopy; Nuclear magnetic resonance spectroscopy; X ray crystallography; Isomers; ethynylpyrene; pyrene derivative; unclassified drug; fluorescence spectroscopy; nuclear magnetic resonance; room temperature; X ray crystallography
Issue Date: 2008
Citation: Journal of Organic Chemistry, 73(6), 2404-2407
Abstract: (Chemical Equation Presented) The first example of isolation and X-ray crystallographic structural characterization of two conformers arising from rotation along a diacetylenic bond is reported. In both the conformers extensive ?-? interactions are observed in the solid state. VT-NMR and fluorescence spectroscopic studies in solution suggest that the closed and open conformers are in equilibrium and that the closed conformer is the predominant species at room temperature. � 2008 American Chemical Society.
ISSN: 223263
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