Cyclo-ruthenated and -platinated complexes bearing phosphonate substituents

摘要

Two new, potentially cyclometalating terdentate ligands bearing phosphonate substituents, Et2O3P-N boolean AND C(H)boolean AND N(5) and Et2O3P-C(H)boolean AND N boolean AND N (7), have been prepared. The corresponding ruthenium complexes, [1](+) and [2](+), respectively, were obtained by reaction with [RuCl3(tpy)]. Complexes [1](+) and [2](+) display electronic properties characteristic for cyclometalated ruthenium complexes. The platinum complex [3], of N boolean AND C(H)boolean AND N ligand 5, was also prepared and is highly phosphorescent in solution. In general, the phosphonate group electronically behaves equivalent to a carboxylate moiety.