title: Paddle Wheel Based Triazolyl Isophthalate MOFs: Impact of Linker Modification on Crystal Structure and Gas Sorption Properties.
abstract: Syntheses and comprehensive characterization of two closely related series of isomorphous metal-organic frameworks (MOFs) based on triazolyl isophthalate linkers with the general formula ∞(3)[M2(R(1)-R(2)-trz-ia)2] (M = Cu, Zn) are presented. Using solvothermal synthesis and synthesis of microcrystalline materials on the gram scale by refluxing a solution of the starting materials, 11 MOFs are readily available for a systematic investigation of structure-property relationships. The networks of the two series are assigned to rutile (rtl) (1-4) and α-PbO2 (apo) (5-9) topology, respectively. Due to the orientation of the triazole substituents toward the cavities, both the pore volume and the pore diameter can be adjusted by choice of the alkyl substituents. Compounds 1-9 exhibit pronounced microporosity with calculated porosities of 31-53% and show thermal stability up to 390 °C as confirmed by simultaneous thermal analysis. Systematic investigation of adsorption properties by CO2 (298 K) and N2 (77 K) adsorption studies reveal remarkable network flexibility induced by alkyl substituents on the linker. Fine-tuning of the gate opening pressure and of the hysteresis shape is possible by adjusting the substitution pattern and by choice of the metal ion.
authors.affiliation: Fakultät für Chemie und Mineralogie, Universität Leipzig , Johannisallee 29, D-04103 Leipzig, Germany.
authors.forename: Merten
authors.initials: M
authors.lastname: Kobalz
authors.affiliation: Fakultät für Chemie und Mineralogie, Universität Leipzig , Johannisallee 29, D-04103 Leipzig, Germany.
authors.forename: Jörg
authors.initials: J
authors.lastname: Lincke
authors.affiliation: Fakultät für Chemie und Mineralogie, Universität Leipzig , Johannisallee 29, D-04103 Leipzig, Germany.
authors.forename: Karolin
authors.initials: K
authors.lastname: Kobalz
authors.affiliation: Fakultät für Chemie und Mineralogie, Universität Leipzig , Johannisallee 29, D-04103 Leipzig, Germany.
authors.forename: Oliver
authors.initials: O
authors.lastname: Erhart
authors.affiliation: Fakultät für Chemie und Mineralogie, Universität Leipzig , Johannisallee 29, D-04103 Leipzig, Germany.
authors.forename: Jens
authors.initials: J
authors.lastname: Bergmann
authors.affiliation: Fakultät für Chemie und Mineralogie, Universität Leipzig , Johannisallee 29, D-04103 Leipzig, Germany.
authors.forename: Daniel
authors.initials: D
authors.lastname: Lässig
authors.affiliation: Institut für Nichtklassische Chemie e.V. , Permoserstraße 15, D-04318 Leipzig, Germany.
authors.forename: Marcus
authors.initials: M
authors.lastname: Lange
authors.affiliation: Institut für Nichtklassische Chemie e.V. , Permoserstraße 15, D-04318 Leipzig, Germany.
authors.forename: Jens
authors.initials: J
authors.lastname: Möllmer
authors.affiliation: Fakultät für Chemie und Mineralogie, Universität Leipzig , Johannisallee 29, D-04103 Leipzig, Germany.|Institut für Nichtklassische Chemie e.V. , Permoserstraße 15, D-04318 Leipzig, Germany.
authors.forename: Roger
authors.initials: R
authors.lastname: Gläser
authors.affiliation: Fakultät Maschinenbau und Verfahrenstechnik, Hochschule Offenburg , Badstraße 24, D-77652 Offenburg, Germany.
authors.forename: Reiner
authors.initials: R
authors.lastname: Staudt
authors.affiliation: Fakultät für Chemie und Mineralogie, Universität Leipzig , Johannisallee 29, D-04103 Leipzig, Germany.
authors.forename: Harald
authors.initials: H
authors.lastname: Krautscheid