Crystal and Molecular Structures of Phosphonolactone Derivatives of Chromone |
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| Authors: | Magdalena Ma?ecka Werner Massa El?bieta Budzisz |
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| Institution: | (1) Department of Crystallography and Crystal Chemistry, University of tódź, 90-236, tódź, Pomorska, 149/153, Poland;(2) Department of Chemistry, University of Marburg, Hans-Meerwein-Strasse, D-35032 Marburg, Germany;(3) Faculty of Pharmacy, Department of Bioorganic Chemistry, Medical University of tódź, 90-151, tódź, Muszyńskiego 1, Poland |
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| Abstract: | The crystal structure of chromone hydrazonium salt (±)-1-hydroxy-1-oxo-3-phenyl-1,3-dihydro-1λ5-2,1-oxaphospholo4,5-b]-4H-1-benzopyran-4-one (2) and its acid (±)-1-hydroxy-1-oxo-3-phenyl-1,3-dihydro-1λ5-2,1-oxaphospholo4,5-b]-4H-1-benzopyran-4-one (3) have been solved. Condensed rings are almost planar, the P atom adopts nearly tetragonal geometry. The molecular packing is influenced by inter- and intramolecular contacts, which can be recognized as hydrogen bonds. |
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| Keywords: | Chromone derivatives X-ray structure analysis hydrogen bonds |
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