Two novel metal-organic frameworks with different structures were obtained by reactions of PbI2 with N,N′-bis(3-pyridylmethyl)-1,4-biphenylenedimethyleneimine (L) under different M/L ratios. When the M/L ratio is 1:1, L bridges [PbI2]n chains to form a layered organic–inorganic hybrid compound with the empirical formula [Pb(L)I2] (1). When changing the M/L ratio to 2:1, L bridges the double chains [Pb2I4]n to form networks [Pb2(L)I4] (2), which are further linked by C–H···I hydrogen bonds to give a 3D structure.
通过 PbI2 与 N,N′-双(3-
吡啶基
甲基)-1,4-
联苯二
亚甲基亚胺(L)在不同 M/L 比下的反应,获得了两种结构不同的新型
金属有机框架。当 M/L 比为 1:1 时,L 会桥接[PbI2]n 链,形成经验公式为[Pb(L)I2](1)的层状有机-无机杂化化合物。当 M/L 比变为 2:1 时,L 桥接双链 [Pb2I4]n 形成网络 [Pb2(L)I4] (2),这些网
络通过 C-H-I
氢键进一步连接,形成三维结构。