摘要:
Treatment of RuCl2(eta(2) -Ph2PCH2CH2OCH3)(2) with various chelating diamines permitted the isolation of the corresponding RuCl2(eta(1)-Ph2PCH2CH2OCH3)(2)(diamine) complexes in high yield (diamine = 1,2-diaminoethane, 1,2-diaminopropane, 1,3-diaminopropane, 1,2-phenylenediamine, 1,8-diaminonaphthalene, 2,2'-bipyridine, 1,10-phenanthroline). In solution, all complexes prefer the trans-chloro cis-phosphine arrangement, as deduced by NMR spectroscopy. X-ray studies showed that in the solid state all three possible isomers of the octahedral RuCl2P2(diamine) complexes are present. The reaction of the RuCl2(eta(1)-Ph2PCH2CH2OCH3)(2)(diamine) complexes with 1 equiv of AgSbF6, AgBF4, or TIPF6 leads to the abstraction of one chloride by simultaneously coordinating one ether oxygen to ruthenium and forming monocationic [RuCl(eta(1)-Ph2PCH2CH2OCH3)(eta(2)-Ph2PCH2CH2OCH3)(diamine)](+) compounds. If a large excess of silver or thallium salt is used, the dichloro complexes are converted to the [Ru(eta(2)-Ph2PCH2CH2OCH3)(2)(diamine)](2+) dications. In the case of 1,2-phenylendiamine as coligand, the corresponding dication is only observed in traces. NMR spectroscopic investigations and X-ray structural analyses confirm the eta(1) and eta(2) coordination of the ether-phosphine ligands in the corresponding mono- and dicationic ruthenium(II) complexes.