1H NMR analysis of porphyrin-stoppered rotaxanes: effect of the porphyrin substituents on the macrocycleElectronic supplementary information (ESI) available: chemical shift data. See http://www.rsc.org/suppdata/nj/b4/b403707c/
作者:Taichi Ikeda、Masumi Asakawa、Toshimi Shimizu
DOI:10.1039/b403707c
日期:——
shorter) and threeporphyrin rhodium chlorides having different substituents. The chemical shift changes in 1H NMR spectra, due to the anisotropic shielding effects by the aromatic rings, enabled us to estimate the molecular structure. In the cases of the rotaxanes with relatively shorter thread, the conformation of the macrocycle proved to be affected by the substituents in the terminal porphyrin. This result