Abstract
Reactions of copper(II) sources with 1,2-bis(4-pyridyl)ethane (bpe) yielded metal–organic networks with diverse topologies and dimensionalities. Compounds [Cu(bpe) 2(dmf) 2] n (ClO 4) 2 n ·2 ndmf ( 1·2 ndmf), [Cu(bpe) 2(dmf) 2] n (ClO 4) 2 n ·3.5 ndmf ( 2·3.5 ndmf), [Cu(bpe) 2(NO 3) 2] n ·2 nH 2O ( 4·2 nH 2O) and [Cu 2(bpe)(O 2CMe) 4] n ·0.7 nH 2O ( 5·0.7 nH 2O) have been isolated by altering the copper(II) source, the reaction solvent and the crystallization process. Compounds 1·2 ndmf and 2·3.5 ndmf consist of cationic [Cu(bpe) 2(dmf) 2] 2+ repeating units assembled to 1D and 2D (4,4) networks, respectively, and represent supramolecular isomers due to the conformational isomerism of the bridging bpe molecules. Compound 4·2 nH 2O consists of neutral mononuclear [Cu(dpe) 2(NO 3) 2] repeating units assembled to inclined interpenetrating (4,4) sheets describing an overall entanglement that is 3D in nature, and compound 5·0.7 nH 2O consists of neutral dinuclear repeating units assembled to cross-linked 1D chains.
Published Version
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