incorporating a ruthenium aqua complex having two alkyl chains on tridentate and asymmetrical bidentate ligands (proximal‐2: [Ru(C10tpy)(C10pyqu)OH2]2+, C10tpy=4′‐decyloxy‐2,2′;6′,2“‐terpyridine, C10pyqu=2‐[2′‐(6′‐decyloxy)‐pyridyl]quinoline). The ruthenium complex of proximal‐2 with closed alkyl chain geometry and a cylinder‐like molecular shape exhibited photoisomerization to distal‐2 with an open alkyl
Cross-coupling product 2-(2-pyridyl)quinolines were obtained in the reaction of 2-(methylsulfinyl)quinolines and 2-(methylsulfinyl)pyridines with methylmagnesium bromide. Attempts of cross coupling in the reaction of other substrates were unsuccessful.
complexes had sterically hindered environments around the metal center. The ruthenium aqua complexes showed reversible photoisomerization between the proximal and distal isomers. The quantumyield for photoisomerization of the 6′-substituted ruthenium aqua complex was almost twice as large as those of the other derivatives. This is explained by weakening of the ligand field on the ruthenium center by introduction
一系列具有氯取代二齿配体的钌配合物,近端-[Ru(tpy)(Cl-pyqu)L] n + [ n = 1 表示 L = Cl,n = 2 表示 L = OH 2,tpy = 2 ,2';6',2''-三联吡啶, pyqu = 2-(2'-吡啶基)喹啉] 被合成并通过实验研究了它们的可逆光异构化和热异构化。配合物的晶体结构表明,在 pyqu 配体的 4-或 4'-位引入氯取代基不会改变金属中心周围的结构与未取代配合物的结构相比,近端-[Ru(tpy )(pyqu)L] n +. 相比之下,6'-取代的配合物在金属中心周围具有空间位阻环境。钌水配合物在近端和远端异构体之间显示出可逆的光异构化。6'-取代的钌水络合物的光异构化量子产率几乎是其他衍生物的两倍。这可以通过在 6'-位引入氯取代基削弱钌中心上的配体场来解释。对于 6'-取代的复合物,观察到从远端异构体到近端异构体的热反向异构化,但对于
An luminescent device material which is inexpensive and exhibits excellent durability in the presence of oxygen can be provided using a luminescent silver complex which has an organic multidentate ligand, particularly, a luminescent silver complex wherein the organic multidentate ligand is coordinated to a phosphorus atom, a nitrogen atom, an oxygen atom, a sulfur atom, an arsenic atom, an oxygen anion, a nitrogen anion, or a sulfur anion, or a polymer of the luminescent silver complex.