A Switchable Palladium-Complexed Molecular Shuttle and Its Metastable Positional Isomers
作者:James D. Crowley、David A. Leigh、Paul J. Lusby、Roy T. McBurney、Laure-Emmanuelle Perret-Aebi、Christiane Petzold、Alexandra M. Z. Slawin、Mark D. Symes
DOI:10.1021/ja076570h
日期:2007.12.1
We report the design, synthesis, characterization, and operation of a [2]rotaxane in which a palladium-complexed macrocycle can be translocated between 4-dimethylaminopyridine and pyridine monodentate ligand sites via reversible protonation, the metal remaining coordinated to the macrocycle throughout. The substitution pattern of the ligands and the kinetic stability of the Pd-N bond means that changing
我们报告了 [2] 轮烷的设计、合成、表征和操作,其中钯络合的大环可以通过可逆质子化在 4-二甲氨基吡啶和吡啶单齿配体位点之间易位,金属始终与大环协调。配体的取代模式和 Pd-N 键的动力学稳定性意味着在没有额外输入(热和/或配位溶剂/阴离子)。因此,在环境条件下,可以选择、操作、分离和表征 [2] 轮烷的四组质子化和中性、稳定和亚稳定共构体中的任何一个。