- Design of a MOF based on octa-nuclear zinc clusters realizing both thermal stability and structural flexibility
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An octa-nuclear zinc (Zn8) cluster-based two-fold interpenetrated metal-organic framework (MOF) of [(CH3)2NH2]2[Zn8O3(FDC)6]·7DMF (denoted as Zn8-as; H2FDC = 9H-fluorene-2,7-dicarboxylic acid; DMF = N,N-dimethylformamide) was synthesized by the reaction of a hard base of a curved dicarboxylate ligand (H2FDC) with the borderline acid of Zn(ii) under solvothermal conditions. Zn8-as shows significant crystal volume shrinkage upon heating, yielding a solvate-free framework of [(CH3)2NH2]2[Zn8O3(FDC)6] (Zn8-de). Zn8-de displays gated adsorption for C2H2 and type-I adsorption for CO2, attributed to the framework flexibility and the different interactions between the gas molecules and the host framework.
- Chen, Ming,Ding, Lifeng,Hori, Akihiro,Kusaka, Shinpei,Li, Liangchun,Ma, Yunsheng,Matsuda, Ryotaro,Mishima, Akio,Tang, Xiaoyan,Wu, Xiaoyu
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supporting information
p. 1139 - 1142
(2022/02/03)
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- Alkyl-substituted bis(4-((9H-fluoren-9-ylidene)methyl)phenyl)thiophenes: weakening of intermolecular interactions and additive-assisted crystallization
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Aggregation-induced emission (AIE) materials find their applications in organic optoelectronics, bio-imaging and sensors. In this work, we introduced alkyl substituents in AIE-active bis(4-((9H-fluoren-9-ylidene)methyl)phenyl)thiophene and elucidated thei
- Sonina, Alina A.,Becker, Christina S.,Kuimov, Anatoly D.,Shundrina, Inna K.,Komarov, Vladislav Yu.,Kazantsev, Maxim S.
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p. 2654 - 2664
(2021/04/19)
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- Unbridged cyclopentadienyl-fluorenyl complexes of zirconium as catalysts for homogeneous olefin polymerization
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The reaction of various lithium fluorenyl compounds, Li(C13H7R1R2) (R1R2=H, alkyl or aryl) (1a-1n), with C5H5ZrCl3 leads to unbridged fluorenyl complexes of the type (C5H5)C13H7R1R2)ZrCl2 (2a-2n) which can be converted to the corresponding metallocene dimethyl complexes (3a-3e).In combination with methylaluminoxane (MAO), 2a-2n show a higher catalytic activity as homogeneous eethylene polymerization catalysts than (C5H5)2ZrCl2.Compound 2d (R1=2-Me; R2=7-Me) was charcterized by an X-ray structure analysis.Keywords: Metallocene; Fluorenyl ligands; Olefin polymerization; Zirconium
- Schmid, Michael A.,Alt, Helmut G.,Milius, Wolfgang
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p. 101 - 106
(2007/10/02)
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- Cyclic carbonyl compounds
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Certain fluorenone and anthraquinone compounds, each of which is 2-substituted by a carboxyl group or a salt, ester or optionally substituted amide thereof and each of which is optionally substituted in the 5,6-,7-or 8-position, by a second carboxyl group, salt, ester or optionally substituted amide thereof, the substitutent in the 5,6-7- or 8-position of the fluorenone compounds, also being selected from cyano, halogen, nitro, alkyl, alkoxy and acyl, are useful for the relief or prophylaxis of allergic conditions.
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- Cyclic carbonyl compounds
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Certain fluorenone and anthraquinone compounds, each of which is 2-substituted by a carboxyl group or a salt, ester or optionally substituted amide thereof and each of which is optionally substituted in the 5,6-,7- or 8- position, by a second carboxyl group, salt, ester or optionally substituted amide thereof, the substitutent in the 5,6-7- or 8- position of the fluorenone compounds, also being selected from cyano, halogen, nitro, alkyl, alkoxy and acyl, are useful for the relief or prophylaxis of allergic conditions.
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