Journal article
Optimized Synthesis of
Tetrafluoroterephthalic Acid: A Versatile Linking Ligand for the
Construction of New Coordination Polymers and Metal-Organic Frameworks.




Publication Details
Authors:
Orthaber, A.; Seidel, C.; Belaj, F.; Albering, J.; Pietschnig, R.; Ruschewitz, U.
Publisher:
American Chemical SocietyDO - 10.1021/ic1009829
Publication year:
2010
Journal:
Inorganic Chemistry
Pages range:
9350-9357
Volume number:
49
Start page:
9350
End page:
9357
ISSN:
0020-1669

Abstract
Pure 2,3,5,6-tetrafluoroterephthalic acid (H2tfBDC) is obtained in high yields (95%) by reacting 1,2,4,5-tetrafluorobenzene with a surplus (>2 equiv) of n-butyllithium in THF and subsequent carbonation with CO2 without any extensive purifn. procedure. A single crystal X-ray structure anal. of H2tfBDC (1) confirms former data obtained for a deuterated sample (P̅, Z = 1). Recrystn. from water/acetone leads to single crystals of H2tfBDC·2H2O (2, P21/c, Z = 2), where an extensive hydrogen bonding network is found. By reacting H2tfBDC with an aq. ammonia soln., single crystals of (NH4)2tfBDC (3, C2/m, Z = 2) are obtained. 3 Is thermally stable up to 250 °C and shows an enhanced soly. in water compared to H2tfBDC. Monosubstituted 2,3,5,6-tetrafluorobenzoic acid (H2tfBC, 4) is obtained by reacting 1,2,4,5-tetrafluorobenzene with stoichiometric amts. (1 equiv) of n-butyllithium in THF. Its crystal structure (Fdd2, Z = 16) shows dimeric units as characteristic structural feature. [on SciFinder(R)]


Keywords
fluoroterephthalic acid prepn crystallog hydrogen bond


Authors/Editors

Last updated on 2019-25-07 at 10:14

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