The Al(III) complex of 3-cyanopentane-2,4-dionate (acacCN) features peripheric nitrile groups which may coordinate to silver cations. As the Al(acacCN)3 building block ranges between inertness and lability, its reactivity towards Ag(I) salts depends on the solvent and the weakly or non-coordinating counter anions; an impressive range of different extended structures has been encountered. With AgPF6, the original building block is retained and hexafluorophosphate remains uncoordinated. A highly symmetric 3D crystalline solid forms in the presence of trichloromethane, and with benzene a tetrasolvate with large solvent-filled voids is obtained. Two different classes of reaction products with silver triflate have been observed. In addition to networks incorporating Al(acacCN)3, partial solvolysis may lead to a dinuclear methoxide-bridged derivative. The resulting Al2(μ-OMe)2 core may be perceived as a four-connected node in a self-interpenetrating 3D network. Earlier studies reported transmetalation for the reaction of Al(acacCN)3 with AgNO3 and we find the same reactivity for silver tetrafluoroborate. Full degradation of the Al(III) building block with formation of [Ag(acacCN)] is observed.
3-
氰基
戊烷-2,4-二酸酯 (acacCN) 的 Al(III) 络合物具有可与
银阳离子配位的外围腈基团。由于 Al(acacCN)3 结构单元介于惰性和不稳定之间,因此其对 Ag(I) 盐的反应性取决于溶剂和弱配位或非配位阴离子;我们遇到了一系列令人印象深刻的不同扩展结构。对于 AgPF6,原始结构单元被保留,
六氟磷酸盐仍然不配位。在三
氯甲烷存在下形成高度对称的 3D 结晶固体,并与苯一起获得具有大的溶剂填充空隙的四溶剂化物。已经观察到与
三氟甲磺酸银的两种不同类型的反应产物。除了包含 Al(acacCN)3 的网络外,部分溶剂分解可能会产生双核
甲醇桥联衍
生物。由此产生的 Al2(μ-OMe)2 核可以被视为自互穿 3D 网络中的四连接节点。早期研究报道了 Al(acacCN)3 与 AgNO3 反应的
金属转移,我们发现四
氟硼酸银具有相同的反应性。观察到 Al(III) 结构单元完全降解并形成 [Ag(acacCN)]。