were fully characterized by multinuclear NMR and ESI-MS spectroscopic techniques, and in case of 1 the structure was unambiguously determined by single crystal X-ray diffraction analysis. Incorporation of Pd-ethynyl bonds helped to make the assemblies π-electron rich and fluorescent in nature. Complexes 1–2 showed quenching of fluorescence intensity in solution in presence of nitroaromatics, which are
通过预先设计的Pd(II)配位体的配位驱动自组装,设计和合成了三个新颖的[2 + 2]自组装分子矩形1-3。1,8-二乙
硫基
蒽在CuCl催化剂存在下,用反式-Pd(PEt 3)2 Cl 2组装通过Pd-C键形成中性矩形1。配合物1代表通过C-Pd配位驱动的自组装获得的中性分子矩形的第一个例子。一种新的Pd 2 II有机
金属积木180°咬入角1,4-双[反式- (
乙炔基)的Pd(PET 3)2(NO 3)]苯(中号2通过使用Sonagashira偶联反应,以合理的产率合成了含有
乙炔基官能团的)。用两个有机夹子型供体(L 2 -L 3)自组装M 2分别得到[2 + 2]个自组装分子矩形2和3 [ L 2 =1,8-双(4-
吡啶乙炔基)
蒽; L 3 =1,3-双(3-
吡啶基)间苯二甲酰胺]。大环1-3通过多核NMR和ESI-MS光谱技术进行了充分表征,在1的情况下,其结构是通过单晶X射线衍射分析