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Syntheses, structures and photocatalytic properties of ruthenium complexes bearing L-methionine ligands
Journal of Organometallic Chemistry ( IF 2.1 ) Pub Date : 2019-12-17 , DOI: 10.1016/j.jorganchem.2019.121078
Jiao Ji , Chong Chen , Ai-Quan Jia , Hua-Tian Shi , Qian-Feng Zhang

Treatment of [(η6-C6H6)RuCl2]2 or [(η6-p-cymene)RuCl2]2 with two equiv. of L-methionine in the presence of AgNO3 and NaOMe gave mononuclear ruthenium(II) complexes [(η6-C6H6)Ru(L-met)](NO3) (1) and [(η6-cymene)Ru(L-met)](NO3) (2), respectively. Interactions between equal equiv. of L-methionine and [Ru(CO)2Cl2]n, [Ru(bpy)2Cl2]·2H2O (bpy = 2,2′-bipyridine), [Ru(NO)(PPh3)2Cl3], (Et4N)[Ru(CH3CN)2Cl4] or cis-[Ru(DMSO)4Cl2] (DMSO = dimethylsulfoxide) resulted in isolation of the expected ruthenium complexes [(CO)2Ru(L-met)Cl] (3), [(bpy)2Ru(L-met)]Cl (4), [Ru(L-met)(NO)(PPh3)Cl]Cl (5), [Ru(L-met)(CH3CN)Cl2] (6) and [Ru(L-met)(DMSO)2Cl] (7), respectively. Reaction of [Ru(COD)Cl2]2 (COD = 1,5-cyclooctadiene) with L-methionine gave a dinuclear ruthenium complex [(COD)Ru(μ-S-L-met)(μ-Cl)RuCl(L-metNMe2)] (8). Complexes 18 were characterized by microanalyses, IR, NMR and UV–vis spectroscopies. The structures of complexes 1, 2, 4 and 8 have been unambiguously established by single-crystal X-ray crystallography. The photocatalytic properties for hydrogen production by water splitting of complexes 1, 2, 4 and 8 under visible light (λ > 420 nm) were also investigated.



中文翻译:

带有L-蛋氨酸配体的钌配合物的合成,结构和光催化性能

[(处理η 6 -C 6 H ^ 6)的RuCl 2 ] 2或[(η 6 - p的RuCl -cymene)2 ] 2具有两个当量。的大号中的AgNO的存在-甲硫氨酸3和NaOMe,得到单核钌(II)配合物[(η 6 -C 6 H ^ 6)的Ru(大号-Met)](NO 3)(1)和[(η 6 -cymene )Ru(L -met)](NO 3)(2), 分别。等值之间的相互作用。的大号蛋氨酸和的[Ru(CO)22 ] Ñ,的[Ru(联吡啶)22 ]·2H 2 O(BPY = 2,2'-联吡啶),的[Ru(NO)(PPH 32 Cl 3 ],(Et 4 N)[Ru(CH 3 CN)2 Cl 4 ]或顺式-[Ru(DMSO)4 Cl 2 ](DMSO =二甲基亚砜)分离出预期的钌配合物[(CO)2 Ru(L-met)Cl](3),[(bpy)2 Ru(L-met)] Cl(4),[Ru(L -met)(NO)(PPh 3)Cl] Cl(5),[Ru(L- met)(CH 3 CN)Cl 2 ](6)和[ Ru(L- met)(DMSO)2 Cl](7)。[Ru(COD)Cl 2 ] 2(COD = 1,5-环辛二烯)与L-蛋氨酸的反应生成了双核钌络合物[(COD)Ru(μ- S- L -met)(μ- Cl)RuCl(L -metNMe 2)](8)。配合1 - 8用微量分析,红外,核磁共振和紫外可见光谱法进行表征。复合物的结构1248已经通过单晶X射线晶体学,便能清楚地确立。通过络合物的水分解生产氢的光催化性能1248在可见光下(λ> 420nm的)也进行了调查。

更新日期:2019-12-18
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