Dinuclear RuIIPHEHAT and -TPAC Complexes: Effects of the Second RuII Center on Their Spectroelectrochemical Properties

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• 作者：Benjamin Elias ; Leslie Herman ; Cé ; cile Moucheron ; André ; e Kirsch-De Mesmaeker
• 刊名：Inorganic Chemistry
• 出版年：2007
• 出版时间：June 11, 2007
• 年：2007
• 卷：46
• 期：12
• 页码：4979 - 4988
• 全文大小：343K
• 年卷期：v.46,no.12(June 11, 2007)
• ISSN：1520-510X

文摘

Four novel dinuclear Ru^II compounds and, for comparison purposes, two corresponding mononuclear complexescontaining the PHEHAT or TPAC ligand (PHEHAT = 1,10-phenanthrolino[5,6-b]-1,4,5,8,9,12-hexaazatriphenyleneand TPAC = tetrapyrido[3,2-a:2',3'-c:3' ',2' '-h:2' '',3' ''-j]acridine) have been synthesized and characterized. Conclusionson the effects of dinucleation of these two bridging ligands can be drawn only for the compounds for which theresults demonstrate that the bridging ligand is involved in the first electrochemical reduction and lowest emissionenergy. The behavior of these complexes, which is not always predictable, is discussed, and the differences arehighlighted in this work. Interestingly, all of the compounds are luminescent except one dinuclear species, [(phen)₂Ru--PHEHAT-Ru(TAP)₂]⁴⁺, which does not luminesce in MeCN and BuCN at room temperature.