Marina Felloni, Alexander J Blake, Neil R Champness, Peter Hubberstey, Claire Wilson, Martin Schröder
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引用次数: 27
摘要
从含有4,4′-联吡啶（4,4′-bipy）的溶液中结晶硝酸钴（II y）2][NO3]2.2（4,4′-bipy）·2H2O}∞，或5∶1{（Co（H2O）2（4,4′-bipy）2}（μ-4,4′-biby）]·1.5[NO3]·0.5OH·2（4,4'-bipy）·2.5H2O}∞，3。紫色3:2的产物是基于五边形锥体CoO4N3配位球，而其他三个橙色产物（1-3）都是基于八面体CoO2N4中心。尽管之前已经报道了紫色产物的类似物，其扩展结构采用了1-D梯形基序，但橙色产物的扩展结构基于（4，4）拓扑的2-D片，是前所未有的。然而，这些产品在（4，4）片材的结构上有所不同。在图2中，4，4′-bipy分子中的所有四个桥接钴（II）中心以生成几乎正方形的（4，4）网格，而在图1和图3中，四个4，4’-bipy-分子中只有两个桥接钴中心以生成Z字形链（在图1中）或线性链（在表3中）。1和3中的两个末端4，4′-bipy配体分别参与π–π堆积相互作用和氢键相互作用，形成菱形（4，4）网格。然而，在2中，一系列前所未有的配位、氢键和π–π堆叠相互作用通过两个水和两个4，4′-bipy分子将钴（II）中心从平行的{[co（μ-4，4′-bipy）2]2+}∞正方形网格连接起来，产生双互穿ReO3型网络结构。
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