Complexes of lanthanoid salts with the crown ether cis,syn,cis-2,5,8,15,18,21-hexaoxatricyclo[20.4.0.0]hexacosane and their paramagnetically shifted nuclear magnetic resonance spectra

Abstract

Lanthanoid perchlorates form complexes [M(ClO4)3(shoth)] with the title crown ether (shoth) whose n.m.r. spectra show shifts which are predominantly dipolar. The magnetic-susceptibility tensors are not axially symmetric.