CFA-14 - a perfluorinated metal-organic framework with linear 1-D CoII -chains showing temperature dependent spin-chain magnetic ordering

Dalton Transactions : an International Journal of Inorganic Chemistry
J FritzscheDirk Volkmer

Abstract

The synthesis and crystal structure of the perfluorinated metal-organic framework (MOF) CFA-14 (Coordination Framework Augsburg University-14), CoII2(tfpb)(OH)2 (H2-tfpb = 1,4-bis(3,5-bis(trifluoromethyl)-1H-pyrazole-4-yl)benzene) are described. The cobalt-containing MOF crystallizes in the tetragonal crystal system within the space group I41/acd (no. 142) and the unit cell parameters are as follows: a = 20.3213(11) Å, c = 12.4045(8) Å, V = 5122.5(6) Å3. CFA-14 features a porous two-fold interpenetrated 3-D microporous structure constructed from 1-D chains of cobalt(ii) ions expanding in the c-direction, bridged by OH- groups and tfpb2- ligands. The structure exhibits quadratic channels running along the c-axis. CFA-14 is fully characterized by synchrotron single crystal X-ray diffraction, thermogravimetric analysis, variable temperature powder X-ray diffraction, IR- and UV-Vis spectroscopy, photoluminescence and gas sorption measurements. Moreover, the magnetic properties of CFA-14 are examined via SQUID measurements.

References

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Dec 25, 2007·Acta Crystallographica. Section A, Foundations of Crystallography·George M Sheldrick
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Oct 15, 2009·Langmuir : the ACS Journal of Surfaces and Colloids·André O MenezesMarco A Fraga
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Jan 9, 2015·Acta Crystallographica. Section C, Structural Chemistry·George M Sheldrick
Jan 9, 2015·Acta Crystallographica. Section C, Structural Chemistry·Anthony L Spek
May 11, 2017·Dalton Transactions : an International Journal of Inorganic Chemistry·J FritzscheD Volkmer
Oct 19, 2017·Dalton Transactions : an International Journal of Inorganic Chemistry·J FritzscheD Volkmer

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Methods Mentioned

BETA
X-ray
neutron diffraction

Software Mentioned

DICVOL
SQUEEZE
TREOR
ORTEP
SHELXL
SHELXT

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