electron-donating RuII(dppe)Cp unit and electron-accepting RuIIIO6 unit are connected by C2trop in these complexes. 2a incorporates acetylacetonate as an ancillary ligand, while 2b and 3 incorporate tropolonate as an ancillary ligand. Every complex, 2a, 2b, and 3, exhibits similar UV–vis–near-IR (NIR) absorption spectra, demonstrating the lack of explicit intramolecular electronic communication between the
双核和三核
钌配合物,[Ru(trop)2(C 2 trop)Ru(dppe)Cp] [ 2b ; 合成了trop = tropolonato,C 2 trop =
乙炔基Tropolonato,dppe = 1,2-双(
二苯基膦基)
乙烷和[Ru(trop)(C 2 trop)Ru(dppe)Cp} 2 ](3),并合成与我们先前报道的络合物[Ru(acac)2(C 2 trop)Ru(dppe)Cp](2a)比较,研究了它们的电子和电
化学性质。供电子的Ru II(dppe)Cp单元和受电子的Ru III O 6单元通过C 2连接这些复合物中的trop。2a掺入
乙酰丙酮酸酯作为辅助
配体,而2b和3掺入对苯二酸酯作为辅助
配体。每个复合物2a,2b和3都显示相似的UV-vis-near-IR(NIR)吸收光谱,这表明至少在中性状态下,单元之间缺乏明确的分子内电子通讯。在2a中弱的NIR吸收在电化