Influence of Quinoidal Distortion on the Electronic Properties of Oxidized Divinylarylene-Bridged Diruthenium Complexes
作者:Nils Rotthowe、Jakob Zwicker、Rainer F. Winter
DOI:10.1021/acs.organomet.9b00318
日期:2019.7.22
complex Ru(CO)Cl(PiPr3)2}2(μ-CH═CH–C6H4–CH═CH–C6H4–CH═CH) (Ru2vp-phen2) by vBTD2 or eBTD2 enhances electronic coupling and charge delocalization of their one-electron-oxidized mixed-valent forms. While the latter radical cations are still charge-localized species on the IR time scale, they are fully delocalized on the slower EPR time scale. As a token of a quinoidally distorted bridge, Ru2eBTD22+ features
我们提出了Ru(CO)Cl(P i Pr 3)2 } 2(μ-CH═CH–Ar–CH═CH)类型的四种新的二乙烯基亚芳基桥联的钌络合物与萘-1,4-二基(Ru 2 NA),2,1,3-苯并噻二唑(Ru 2 BTD),双(苯并噻二唑基)乙烯(Ru 2 v BTD 2)或双(苯并噻二唑基)乙炔(Ru 2 e BTD 2)作为亚芳基单元。具有较短的亚芳基桥的配合物的自由基阳离子在IR时间尺度上固有地价离域。与亚苯基桥接的[Ru(CO)Cl(P iPR 3)2 } 2(μ-CH = CH-C 6 H ^ 4 -1,4- CH = CH)] 2+(茹2 -p -苯基2+),配合物的形式dioxidized茹2 BTD和钌2 NA是电子顺磁共振(EPR)无声的。更换Ë的-stilbenediyl接头的复杂的Ru(CO)氯(P我镨3)2 } 2(μ-CH = CH-C 6 H ^ 4 -CH = CH-C