Universität zu Köln

Krautwurst, John, Smets, Daniel, Lamann, Rainer and Ruschewitz, Uwe ORCID: 0000-0002-6511-6894 (2019). How Does the Fluorination of the Linker Affect the Stability of Trimesate-Based Coordination Polymers and Metal-Organic Frameworks? Inorg. Chem., 58 (13). S. 8622 - 8633. WASHINGTON: AMER CHEMICAL SOC. ISSN 1520-510X

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Abstract

The syntheses and crystal structures of the monopotassium salts of difluorinated and tri/perfluorinated trimesic acid (1,3,5-benzenetricarboxylic acid H3BTC) are presented, namely, K(H(2)dF-BTC) (Fdd2, Z = 16) and K(H(2)pF-BTC) (Cc, Z = 4). For the first time, together with already known K(H(2)mF-BTC), all fluorination degrees of trimesic acid are accessible and can be used for a systematic study of the influence of fluorination on the stability of the resulting coordination polymers and metal-organic frame- works (MOFs). The monopotassium salts show a decreasing (chemical) stability in water upon heating, as well as a decreasing thermal stability, as evidenced by differential scanning calorimetry/ thermogravimetric analysis (DSC/TGA). A similar decreasing thermal stability is found for two series of isostructural coordination polymers (UHM-33 topology: (2)(infinity)[Cu-2(L)(2)(DMA)(2)]center dot 2DMA with L2-= HmF-BTC2- and HdF-BTC2- and MOFs ((3)(infinity)[Ba(L)-O-2)(2)]center dot 1/2H(2)O with L2- = HBTC2-' HmF-BTC2- and HdF-BTC2-). Remarkably, while the decomposition temperatures decrease with increasing fluorination of the linker, the releasing temperatures for embedded solvent molecules (DMA and H2O, respectively) increase. To identify possible candidates for the synthesis of isostructural coordination polymers and MOFs with BTC3- ligands with different degrees of fluorination, a database-adapted approach was developed, which utilizes the increased torsion angle between the carboxylate groups and the phenyl rings in these materials as a structure-determining parameter.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Krautwurst, John UNSPECIFIED UNSPECIFIED UNSPECIFIED Smets, Daniel UNSPECIFIED UNSPECIFIED UNSPECIFIED Lamann, Rainer UNSPECIFIED UNSPECIFIED UNSPECIFIED Ruschewitz, Uwe UNSPECIFIED orcid.org/0000-0002-6511-6894 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-136354
DOI:	10.1021/acs.inorgchem.9b00940
Journal or Publication Title:	Inorg. Chem.
Volume:	58
Number:	13
Page Range:	S. 8622 - 8633
Date:	2019
Publisher:	AMER CHEMICAL SOC
Place of Publication:	WASHINGTON
ISSN:	1520-510X
Language:	English
Faculty:	Faculty of Mathematics and Natural Sciences
Divisions:	Faculty of Mathematics and Natural Sciences > Department of Chemistry > Institute of Inorganic Chemistry
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language VERSATILE LINKING LIGAND; TETRAFLUOROTEREPHTHALATE; LUMINESCENCE; ADSORPTION; CONSTRUCTION; SEPARATION; COMPLEXES; PLATFORM; SORPTION Multiple languages Chemistry, Inorganic & Nuclear Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/13635