Self-Assembled Supramolecular Clusters Based on Phosphines and Coinage Metals: Tetrahedra, Helicates, and Mesocates
作者:Sang Ho Lim、Seth M. Cohen
DOI:10.1021/ic302840x
日期:2013.7.15
DMF) as guests within the central cavity of the clusters. The ligands 1,3-dppeb (L3) and 2,6-dppep (L4) give achiral, triple-stranded, dinuclear mesocates with the formula M2(L)3I2 (M = Cu+ or Au+). In contrast, the ligand 1,4-dppeb (L2) generates a triple-stranded, dinuclear helicate with Cu+, but a coordination polymer with Au+ (both with the empirical formula M2(L2)3I2). Finally, coordination polymers
使用多位膦配体和造币金属(Cu +,Ag +,Au +)合成了一系列由配位驱动的超分子金属-配体簇。制备了刚性的3倍或2倍对称膦配体:1,3,5-三((4-(二苯基膦基)乙炔基)苯基)苯)(tppepb,L 1),1,4-双((二苯基膦基) )乙炔基)苯(1,4-dppeb,L 2),1,3-双((二苯基膦基)乙炔基)苯(1,3-dppeb,L 3),2,6-双((二苯基膦基)乙炔基)吡啶(2,6-dppep,L 4)和1,5-双((二苯基膦基)乙炔基)萘(1,5-dppen,L 5)。这些配体与造币金属的自组装产生了四种不同类型的金属-配体簇,或者在某些情况下是配位聚合物,具体取决于膦供体原子的数量和相对几何形状。用tppepb配体获得式M 4(L 1)4 I 4(M = Cu +,Ag +,Au +)的超分子四面体簇,将溶剂分子(CH 2 Cl 2或DMF)封装在分子中团簇的中央腔。配体1