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Characterization and gas adsorption of a novel three‐dimensional metal–organic framework (MOF) generated from a new polydentate fluorene‐bridged ligand
Author(s) -
Han Shu-Ying,
Niu Xue,
Wang Jia,
Jin Guo-Xia,
Liu Ai,
Ma Jian-Ping
Publication year - 2018
Publication title -
acta crystallographica section c
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 17
ISSN - 2053-2296
DOI - 10.1107/s2053229618000815
Subject(s) - fluorene , denticity , characterization (materials science) , ligand (biochemistry) , metal organic framework , adsorption , metal , chemistry , materials science , nanotechnology , organic chemistry , polymer , receptor , biochemistry
A polydentate ligand bridged by a fluorene group, namely 9,9‐bis(2‐hydroxyethyl)‐2,7‐bis(pyridin‐4‐yl)fluorene ( L ), has been prepared under solvothermal conditions in acetonitrile. Crystals of the three‐dimensional metal–organic framework (MOF) poly[[[μ 3 ‐9,9‐bis(2‐hydroxyethyl)‐2,7‐bis(pyridin‐4‐yl)fluorene‐κ 3 N : N ′: O ]bis(methanol‐κ O )(μ‐sulfato‐κ 2 O : O ′)nickel(II)] methanol disolvate], {[Ni(SO 4 )(C 27 H 24 N 2 O 2 )(CH 3 OH)]·2CH 3 OH} n , (I), were obtained by the solvothermal reaction of L and NiSO 4 in methanol. The ligand L forms a two‐dimensional network in the crystallographic bc plane via two groups of O—H…N hydrogen bonds and neighbouring two‐dimensional planes are completely parallel and stack to form a three‐dimensional structure. In (I), the Ni II ions are linked by sulfate ions through Ni—O bonds to form inorganic chains and these Ni‐containing chains are linked into a three‐dimensional framework via Ni—O and Ni—N bonds involving the polydentate ligand L . With one of the hydroxy groups of L coordinating to the Ni II atom, the torsion angle of the hydroxyethyl group changes from that of the uncoordinated molecule. In addition, the adsorption properties of (I) with carbon dioxide were investigated.