Syntheses, Characterization, and Catalytic Ability in Alkane Oxygenation of Chloro(dimethyl sulfoxide)ruthenium(II) Complexes with Tris(2-pyridylmethyl)amine and Its Derivatives<sup>1</sup><sup>,</sup><sup>2</sup>
chloro(benzonitrile)ruthenium(II) complex, whereas the bis(benzonitrile)ruthenium(II) complex was obtained with BPG. The cis(Cl,N(amino))-[RuCl(TPA)(Me2SO)]+ complex is thermodynamically much less stable than the trans isomer and isomerizes in dimethyl sulfoxide at 65-100 degrees C. Oxygenation of alkanes catalyzed by these ruthenium(II) complexes has been examined. The chloro(dimethyl sulfoxide-kappaS)ruthenium(II)
Electrochemical and photochemical bond‐activation steps are important for a variety of chemical transformations. We present here four new complexes, [Ru(Ln)(dmso)(Cl)]PF6 (1–4), where Ln is a tripodal amine ligand with 4−n pyridylmethyl arms and n−1 triazolylmethyl arms. Structural comparisons show that the triazoles bind closer to the Ru center than the pyridines. For L2, two isomers (with respect
Synthesis, spectroscopic analysis and photolabilization of water-soluble ruthenium(iii)–nitrosyl complexes
作者:Anna C. Merkle、Ashley B. McQuarters、Nicolai Lehnert
DOI:10.1039/c2dt30464c
日期:——
by urea (5) or water (6) were also obtained. The nitrosyl complexes obtained this way were then further investigated using IR and FT-Raman spectroscopy. Complex 2 with the two anionic chloride coligands shows the lowest N–O and highest Ru–NO stretching frequencies of 1903 and 619 cm−1 of all the complexes investigated here. Complexes 5 and 6 where TPA serves as a tetradentate ligand show ν(N–O) at
Electrocatalytic alcohol oxidation by covalently immobilized ruthenium complex on carbon
作者:Thomas C. Cook、Eric D. Stenehjem、Jasper Ainsworth、T. Daniel P. Stack
DOI:10.1016/j.jinorgbio.2022.111784
日期:2022.6
water substitution for DMSO and proton coupled electron transfer, [RuIV(O)(Cl)(GC-click-TPA)]+ electrooxidizes alcohols, including methanol, efficiently relative to other immobilized metal complexes. A primary kinetic isotope effect suggests rate-limiting Cα-H bond cleavage of benzyl alcohol. Approximately 40% of the [RuII(Cl)(DMSO)(GC-click-TPA)]+ undergoes the DMSO for water exchange to form an active
存在电催化氧化甲醇的离散固定金属络合物的缺乏。这里报道的是三(2-吡啶基甲基)胺钌络合物 [Ru II (Cl)(DMSO)(ethynyl-TPA)] + (ethynyl-TPA = (5-ethynyl-2-pyridylmethyl)bis(2)的共价固定-吡啶基甲基)胺)通过Cu I催化的乙炔基-TPA配体和叠氮化物衍生碳表面之间的叠氮化物-炔烃环加成(点击)反应形成玻璃碳(GC)电极,形成[Ru II(Cl)(DMSO)(GC) -点击-TPA)] + . 在水取代 DMSO 和质子耦合电子转移后,[Ru IV (O)(Cl)(GC-click-TPA)] +相对于其他固定化金属配合物,可以有效地电氧化醇,包括甲醇。主要的动力学同位素效应表明苯甲醇的限速 Cα-H 键断裂。大约 40% 的 [Ru II (Cl)(DMSO)(GC-click-TPA)] +经历 DMSO 进行水交换形成活性氧化剂,这与更不稳定的
Synthesis and characterization of ruthenium(II) complexes with polypicolylamine ligands
作者:Jens Bjernemose、Alan Hazell、Christine J McKenzie、Mary F Mahon、Lars Preuss Nielsen、Paul R Raithby、Ole Simonsen、Hans Toftlund、Juliusz A Wolny
DOI:10.1016/s0277-5387(03)00025-1
日期:2003.3
A series of ruthenium(II) complexes of polypicolylamine ligands have been prepared. The reaction of Ru(PhCN)(4)Cl-2 with the tridentate ligand N,N-bis(2-pyridylmethyl)aniline (phdpa) followed by precipitation with PF6- salts affords the complex, [Ru(phdpa)(2)](PF6)(2). The crystal structure of [Ru(phdpa)(2)](PF6)(2) shows that the ligand coordinates in a facial mode, with sp(3-) nitrogens located cis to each other. The reaction of Ru(dmso)(4)Cl-2 with the tetradentate ligand tris(2-pyridylmethyl)amine (tpa) in ethanol yielded the (Cl, N-amine)-trans [Ru(tpa)(dmso)Cl](PF6) complex which was characterized by X-ray crystallography. [Ru(tpa)(dmso)Cl](PF6) reacts with bipyridine, tpa and tricyanomethane anion (tcm) affording the [Ru(tpa)(bipy)](PF6)(2), [RU(tpa)(2)](PF6)(2) and Ru(tpa)(tcm)(2) complexes, respectively. The structures of [Ru(tpa)(bipy)(2)](PF6)(2) and Ru(tpa)(tcm)(2) show that tpa acts as a tetradentate ligand, while in [Ru(tpa)(2)](PF6)(2) it is tridentate, facially coordinated, with one non-coordinated pyridine. (C) 2003 Elsevier Science Ltd. All rights reserved.