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An Unusual 3D Zinc-Organic Framework Constructed from Paddle-Wheel-Based Carboxylate Sheets Bridged by Acetate Ions

Abstract : A zinc-2,6-naphthalenedicarboxylate metal-organic framework,(H2NEt2)[Zn2(AcO)(NDC)2]·nDEF (1) (DEF = N,N-diethylformamide, AcO = acetate), was solvothermally synthesized in the presence of small amounts of acetic acid and characterized by singlecrystal and powder X-ray diffraction and thermogravimetric analysis. Compound 1 is an anionic 3D paddle-wheel MOF, in which the zincnaphthalenedicarboxylate sheets are linked together by bridging acetate ions. Compound 1 exhibits large square channels (13 x 13 Å), which contain DEF molecules and, alternatively, charge-balancing diethylammonium cations in situ generated by the hydrolysis of DEF under the solvothermal conditions used. The anionic host framework of 1 is unstable upon removal of guest DEF molecules suggesting that host-guest hydrogen bond interactions are crucial for maintaining the structural integrity of this compound.
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https://hal.archives-ouvertes.fr/hal-01473137
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Nathalie Saffon-Merceron, Marie-Claire Barthélémy, Christophe Laurent, Isabelle Fabing, Pascal Hoffmann, et al.. An Unusual 3D Zinc-Organic Framework Constructed from Paddle-Wheel-Based Carboxylate Sheets Bridged by Acetate Ions. Journal of Inorganic and General Chemistry / Zeitschrift für anorganische und allgemeine Chemie, Wiley-VCH Verlag, 2016, 642 (11-12), pp.709-713. ⟨10.1002/zaac.201600133⟩. ⟨hal-01473137⟩

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