Syntheses, Structures, and Coordination Chemistry of Phosphole-Containing Hybrid Calixphyrins: Promising Macrocyclic P,N<sub>2</sub>,X-Mixed Donor Ligands for Designing Reactive Transition-Metal Complexes
作者:Yoshihiro Matano、Tooru Miyajima、Noriaki Ochi、Takashi Nakabuchi、Motoo Shiro、Yoshihide Nakao、Shigeyoshi Sakaki、Hiroshi Imahori
DOI:10.1021/ja076709o
日期:2008.1.1
Pd(II)-P,N2,S-hybrid complex, in which the calixphyrin platform is regarded as a dianionic ligand. In the complexation with [RhCl(CO)2]2 in dichloromethane, the sigma3-P,N2,S-hybrid behaves as a neutral ligand to afford an ionic Rh(I)-P,N2,S-hybrid complex, whereas the sigma3-P,N2,NH-hybrid behaves as an anionic ligand to produce Rh(III)-P,N3-hybrid complexes. In the latter reaction, it is likely that a
报道了含磷杂化杯状卟啉(P、N2、X-杂化杯状卟啉)的合成、结构和配位化学及其过渡金属配合物的催化活性。5,10-卟啉二亚甲基 14pi-P,(NH)2,X- 和 16pi-P,N2,X-杂化杯状卟啉(X = O, S, NH)是通过 sigma4-磷酸三吡喃和相应的 2,5-双[羟基(苯基)甲基]杂环,然后进行 DDQ 氧化。杂化杯状卟啉的光谱和晶体学数据都表明,大环平台的构象和大小以及-共轭吡咯-杂-吡咯 (NXN) 单元的氧化态因杂杂的组合而异。sigma3-P,(NH)2,S-和 sigma3-P,N2,S-杂化物与 Pd(OAc)2 和 Pd(dba)2 反应,分别提供相同的 Pd(II)-P,N2,S-杂化复合物,其中将杯状卟啉平台视为双阴离子配体。在二氯甲烷中与 [RhCl(CO)2]2 络合时,sigma3-P,N2,S-杂化物表现为中性配体以提供离子 Rh(I)-P,N2