title: Monitoring adsorption-induced switching by (129)Xe NMR spectroscopy in a new metal-organic framework Ni(2)(2,6-ndc)(2)(dabco).
abstract: The synthesis and structure of a new flexible metal-organic framework Ni(2)(2,6-ndc)(2)(dabco) (DUT-8(Ni), DUT = Dresden University of Technology, 2,6-ndc = 2,6-naphthalenedicarboxylate, dabco = 1,4-diazabicyclo[2.2.2]octane) as well as its characterization by gas adsorption and (129)Xe NMR spectroscopy is described. The compound shows reversible structural transformation without loss of crystallinity upon solvent removal and physisorption of several gases. Xenon adsorption studies combined with (129)Xe NMR spectroscopy turn out to be favorable methods for the detection and characterization of the so-called "gate-pressure" effect in this novel MOF material. The linewidth and chemical shift of the (129)Xe NMR signal are shown to be very sensitive parameters for the detection of this structural transition from a narrow pore system with low porosity to a wide pore state. The transition and threshold temperature is clearly detected.
authors.affiliation: Institute of Inorganic Chemistry, Dresden University of Technology, Mommsenstr. 6, D-01069 Dresden, Germany.
authors.forename: Nicole
authors.initials: N
authors.lastname: Klein
authors.forename: Christin
authors.initials: C
authors.lastname: Herzog
authors.forename: Michal
authors.initials: M
authors.lastname: Sabo
authors.forename: Irena
authors.initials: I
authors.lastname: Senkovska
authors.forename: Jürgen
authors.initials: J
authors.lastname: Getzschmann
authors.forename: Silvia
authors.initials: S
authors.lastname: Paasch
authors.forename: Martin R
authors.initials: MR
authors.lastname: Lohe
authors.forename: Eike
authors.initials: E
authors.lastname: Brunner
authors.forename: Stefan
authors.initials: S
authors.lastname: Kaskel
mesh_terms: D000327:Adsorption; D009682:Magnetic Resonance Spectroscopy / Q000379:methods*; D008958:Models, Molecular; D015394:Molecular Structure; D009532:Nickel / Q000737:chemistry*; D009584:Nitrogen / Q000737:chemistry; D009942:Organometallic Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D014978:Xenon / Q000737:chemistry*
chemical_list: D009942:Organometallic Compounds; D014978:Xenon; D009532:Nickel; D009584:Nitrogen