Uranium complexes with dianionic O-methylated calix[4]arene ligands
Abstract
Introduction of the dianionic 25,27-O-dimethylated 5,11,17,23-tetra-tert-butylcalix[4]arene spectator, L2−, to a uranium (IV) centre gave the cyclic trimeric complex 1, which was structurally characterised; complex 1 serves as a useful starting material for further