Universität zu Köln

Krautwurst, John, Lamann, Rainer and Ruschewitz, Uwe (2021). UoC-6: a first MOF based on a perfluorinated trimesate ligand. Z.Naturforsch.(B), 76 (10-12). S. 849 - 857. BERLIN: WALTER DE GRUYTER GMBH. ISSN 1865-7117

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Abstract

Reaction of Sc(NO3)(3)center dot 5H(2)O with K(H(2)pF-BTC) - the monopotassium salt of perfluorinated trimesic acid - led to the formation of single crystals of (1)(infinity) [Sc(pF- BTC)( H2O)(3)]center dot 4H(2)O (P (1) over bar, Z = 2). DTA/TGA measurements revealed that all water molecules were released below 200 degrees C. Using powder synchrotron radiation diffraction data, the crystal structure of the residue of the dehydration was elucidated and the results confirmed the formula (3)(infinity) [Sc (pF - BTC)] (Fddd, Z = 16). The compound is similar, but not isostructural to the recently published UoC-4 (I4(1)/amd, Z = 8; UoC: University of Cologne) with a difluorinated trimesate (dF-BTC3-) as connecting linker. Both compounds can be classified as metal-organic frameworks (MOFs) consisting of a 3D network of Sc3+ nodes connected by the fluorinated trimesate ligands. They contain small pores, but their opening windows are too small for any guest molecules to pass. Remarkably, UoC-4 with a lower symmetric ligand (dF-BTC3-) crystallizes in a higher symmetry space group (I4(1)/amd) than UoC-6 (Fddd). This can be rationalized by increasing torsion angles of the carboxylate moieties in the pF-BTC3- ligand.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Krautwurst, John UNSPECIFIED UNSPECIFIED UNSPECIFIED Lamann, Rainer UNSPECIFIED UNSPECIFIED UNSPECIFIED Ruschewitz, Uwe UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-567478
DOI:	10.1515/znb-2021-0142
Journal or Publication Title:	Z.Naturforsch.(B)
Volume:	76
Number:	10-12
Page Range:	S. 849 - 857
Date:	2021
Publisher:	WALTER DE GRUYTER GMBH
Place of Publication:	BERLIN
ISSN:	1865-7117
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language METAL-ORGANIC FRAMEWORKS; COORDINATION POLYMERS; PROGRAM Multiple languages Chemistry, Inorganic & Nuclear; Chemistry, Organic Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/56747