37 research outputs found

    Land management impacts on European butterflies of conservation concern: a review

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    Concomitant Formation of N-Heterocyclic Carbene-Copper Complexes within a Supramolecular Network in the Self-Assembly of Imidazolium Dicarboxylate with Metal Ions

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    A new building block containing an imidazolium salt was synthesized and used for the construction of supramolecular networks with metal ions. We discovered the concomitant formation of the N-heterocyclic carbene-copper complex (CN = 2) in the selfassembly of imidazolium dlcarboxylates and copper nitrates in N, N-dimethylformamide under heating. The proton in the 2 position of the imidazolium salt was abstracted, and CuII was reduced to CuI during the self-assembly process.close403

    A Microporous Metal-Organic Framework Based on [2+2] Parallel and Inclined Interpenetrated 2D Sheets Interconnected by an Auxiliary Linker

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    A microporous metal organic framework (MOE), [Zn2L2(dabco)], was prepared using a long and rigid dicarboxylic acid, 1,4-bis(3-carboxylphenylethynyl)benzene (H2L), with some rotational flexibility, and an auxiliary bridging diamine linker, 1,4-diazabicyclo[2.2.2]octane (dabco). The MOE, based on a Zn paddle-wheel secondary building unit, has [2 + 2] parallel and inclined interpenetrating 2D sheets interconnected by dabco to form a 3D network with 1D helical channels.close4
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