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Synthesis and properties of 6-fluoro-7-chloro-4-oxo-4H-chromene 3-carboxylic acid. X-ray structure of achiral heterotopic 3-diethoxymethyl-6-fluoro-7-chloro-4-oxo-4H-chromene
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P. L. Barili
Veröffentlicht/Copyright:
25. September 2009
Abstract
Synthesis and reactions of 6-chloro-7-fluoro-4-oxo-4H-chromene-3-carboxylic acid are described. The molecular structure of its achiral heterotopic 3-diethoxy-methyl precursor has been determined by NMR spectroscopy and X-ray crystallography. C14H14ClFO4 is monoclinic, space group P21/a, with unit cell dimensions a = 14.923(5), b = 6.615(2), c = 14.921(5) Å, β = 101.44(3)°, V = 1443.7(8) Å3, Z = 4, Dcalc. = 1.383 g/cm3.
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Published Online: 2009-9-25
Published in Print: 2001-11-1
© 2001 Oldenbourg Wissenschaftsverlag GmbH
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Artikel in diesem Heft
- Structure solution with PATSEE
- The quasicrystal-to-crystal transformation. II. Landau theory
- Superstructure of strontium chromate aluminate sodalite at low temperatures
- The structure of the palladium-rich boride Pd5B (Pd16B3)
- Crystal structure and twinning of Bi4O5Br2
- Synthesis and properties of 6-fluoro-7-chloro-4-oxo-4H-chromene 3-carboxylic acid. X-ray structure of achiral heterotopic 3-diethoxymethyl-6-fluoro-7-chloro-4-oxo-4H-chromene
- Books Received
Artikel in diesem Heft
- Structure solution with PATSEE
- The quasicrystal-to-crystal transformation. II. Landau theory
- Superstructure of strontium chromate aluminate sodalite at low temperatures
- The structure of the palladium-rich boride Pd5B (Pd16B3)
- Crystal structure and twinning of Bi4O5Br2
- Synthesis and properties of 6-fluoro-7-chloro-4-oxo-4H-chromene 3-carboxylic acid. X-ray structure of achiral heterotopic 3-diethoxymethyl-6-fluoro-7-chloro-4-oxo-4H-chromene
- Books Received
