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The first X-ray structures of adducts formed between a RuII(N-heterocyclic carbene)(η6-p-cymene) compound and a protein are reported. Coordination to the protein induced the cleavage of the cymene ligand and EPR spectroscopy demonstrated the oxidation of the Ru centre. [ABSTRACT FROM AUTHOR]

Construction of a site-isolated heterogeneous catalyst to realize the compatibility of bimetallic complexes for a feasible tandem reaction is a significant challenge in heterogeneous asymmetric catalysis. Herein, taking advantage of yolk–shell-structured mesoporous silica, we assemble an active site-isolated bifunctional catalyst through assembly of organopalladium-functionality into silicate channels as an outer shell and chiral organoruthenium-functionality onto silicate yolk as an inner core, realizing the one-pot enantioselective tandem reaction from Pd-catalyzed Sonogashira coupling to Ru-catalyzed asymmetric transfer hydrogenation. As presented in this study, this tandem Sonogashira coupling–asymmetric transfer hydrogenation of haloacetophenones and arylacetylenes affords various chiral conjugated alkynols with high yields and up to 99% enantioselectivity. Moreover, a catalyst can also be recovered easily and recycled repeatedly, making it an interesting feature in a practical organic transformation. [ABSTRACT FROM AUTHOR]

An electrogenerated chemiluminescence (ECL) biosensing method for the determination of DNA methyltransferase activity is developed by the quenching of tris(2,2′-bipyridine)ruthenium ECL by ferrocene, and it is demonstrated that the ECL biosensing method measures DNA adenine methylation methyltransferase over a dynamic concentration range (0.1 U mL−1–100 U mL−1) with an extremely low detection limit of 0.03 U mL−1, using gold nanoparticles and a quenching ECL signal produced by a chemical quencher such as ferrocene. [ABSTRACT FROM AUTHOR]

We have demonstrated directional photoinduced electron transfer in paraquat silicate thin films containing entrapped ruthenium(ii)-tris(bathophenanthroline-disulfonate (RuBPS). The films were made by electrochemically-induced hydrolysis of a silane analogue of paraquat with ruthenium(ii)-tris(bathophenanthroline-disulfonate as its ion pair. [ABSTRACT FROM AUTHOR]

Spectroscopic, electrochemical and theoretical characterisations of photoactive systems readily assembled viaclick-chemistry show an efficient bi-directional charge shift through the triazole link. [ABSTRACT FROM AUTHOR]

Variation of the solvent polarity leads to the formation of vesicles and reverse vesicles of a newly synthesized amphiphilic Ru(ii)-polypyridyl complex. [ABSTRACT FROM AUTHOR]

Two novel water soluble ruthenium(ii) complexes [Ru(bpy)2(bqbg)]2+and [Ru(phen)2(bqbg)]2+have been structurally characterized and their DNA condensation activity, cytotoxicity, and cellular uptake studies of DNA condensates as potential non-viral DNA carriers were evaluated. [ABSTRACT FROM AUTHOR]

Two Ru2+complexes containing terpyridine ligands appended with terthiophene units connected by a methyleneoxy or an alkynyl bridge show very different luminescent behaviours: the former is non-luminescent at 298 K owing to a photoinduced energy transfer process to the terthiophene moiety, while the latter exhibits an extraordinary long excited state lifetime because of an energy reservoir effect. [ABSTRACT FROM AUTHOR]

Significant enhancement of the ECL signals from the Ru(bpy)32ﴳ system was achieved when using a BDD nanograss array, mainly because of the highly facile oxidation of TPA. The facile oxidation of TPA is due to the superior properties of the BDD nanograss array, such as improved electrocatalytic activity and accelerated electron transfer. [ABSTRACT FROM AUTHOR]

Strong electrochemiluminescence signals caused by the highly effective electron transfer process between SnO nanoparticles-deposited multiwall carbon nanotubes (SnO NPs@MWCNTs) composite and Ru(bpy)33쇪 observed. [ABSTRACT FROM AUTHOR]

The RuP double bond in the 5-coordinate terminal phosphido complex [Ru(η5-indenyl)(PR2)(PPh3)] undergoes regioselective [2+2] cycloaddition with simple and activated alkynes to give metallaphosphacyclobutene complexes. These unusual examples of alkyne insertion into a metal–heteroatom bond represent potentially important intermediates in stereoselective routes to new phosphine reagents and ligands. [ABSTRACT FROM AUTHOR]

Shvo's cyclopentadienone-ligated ruthenium complex is an efficient catalyst for the liberation of exactly two molar equivalents of hydrogen from ammonia-borane, a prospective hydrogen storage medium. The mechanism for the dehydrogenation features a ruthenium hydride resting state from which dihydrogen loss is the rate-determining step. [ABSTRACT FROM AUTHOR]

In this communication, we demonstrate that certain kinds of Rh porphyrins on carbon black can electrochemically oxidize aldose at low potentials. The onset potential was much lower than those with the other complex-based catalysts. A product analysis suggested that this reaction involves 2-electron oxidation of the aldehyde group. [ABSTRACT FROM AUTHOR]

Photolysis of porphyrin-ruthenium(iv) dichlorate complexes with visible light results in homolytic cleavage of the O–Cl bond in the chlorates to form trans-dioxoruthenium(vi) species bearing either sterically encumbered or unencumbered porphyrin ligands. [ABSTRACT FROM AUTHOR]

A stable 1 : 1 : 1 inclusion complex of Ru(bpy)3-phenol (1), MV2+and cucurbit[8]uril (CB[8]) is formed in aqueous solution. In the presence of triethanolamine (TEOA), a light-induced formation of unusual partner radical trimer 1–(MV+)2–CB[8] has been observed for the first time. [ABSTRACT FROM AUTHOR]

This is the first report on addressable electrochemiluminescence (ECL) based on redox-cycling of tris(2,2′-bipyridine)-ruthenium(ii) (Ru(bpy)32+). By changing the column or row electrodes addressed, the ECL at each address point can be detected separately. [ABSTRACT FROM AUTHOR]

The capacity of ruthenium polypyridyl complexes as probes for combined confocal luminescence and resonance Raman imaging, enabled by their large Stokes shift, is demonstrated for a novel membrane sensitive Ru(ii) polypyridyl peptide. Confocal luminescence and resonance Raman imaging provides complementary information about the membrane phospholipid regions of the cell and the location of the dye within the cell. [ABSTRACT FROM AUTHOR]

The capacity of ruthenium polypyridyl complexes as probes for combined confocal luminescence and resonance Raman imaging, enabled by their large Stokes shift, is demonstrated for a novel membrane sensitive Ru(ii) polypyridyl peptide. Confocal luminescence and resonance Raman imaging provides complementary information about the membrane phospholipid regions of the cell and the location of the dye within the cell. [ABSTRACT FROM AUTHOR]

The organic and metal-based electroactive sites in the novel organometallic ruthenium–acetylide–tetrathiafulvalene complex are shown to be strongly electronically coupled. [ABSTRACT FROM AUTHOR]

We report protein surface binding of dendritic ruthenium(ii) tris(bipyiridine) complexes to α-chymotrypsin, resulting in a 1 : 1 and 1 : 2 protein complex formation as well as inhibition of the enzyme activity. [ABSTRACT FROM AUTHOR]

The complex [(p-cym)Ru(bpm)(py)][PF6]2(where p-cym = para-cymene, bpm = 2,2′-bipyrimidine and py = pyridine) is the first ruthenium(ii) arene complex that can selectively photodissociate a monodentate ligand (py) when excited with visible light and form a reactive aqua derivative able to bind to a DNA base. [ABSTRACT FROM AUTHOR]

Selective elimination from 1,3-dienic allylic carbonates occurs in the presence of a catalytic amount of [Ru(C5Me5)(4,4′-di-But-2,2′-bipyridine)(CH3CN)]PF6and provides efficient access to a variety of [3]dendralenes. [ABSTRACT FROM AUTHOR]

Electron transfer and delocalization of the π systems were investigated in mono- and dinuclear Ru complexes with the zwitterionic ligand L=N,N'-diisopropyl-2-amino-5-alcoholate-1,4-benzoquinonemonoiminium. [ABSTRACT FROM AUTHOR]

A phenanthridine derivative covalently linked to a ruthenium complex yields an imaging probe whose fluorescence intensity and lifetime change substantially in the presence of RNA. [ABSTRACT FROM AUTHOR]

Three tris(bipyridine)ruthenium dendrimers bearing either six or eighteen mannose units have been synthesized; encapsulation of the Ru(bipy)3 core alters the rate of energy and electron transfer as well as the lectin biosensing abilities. [ABSTRACT FROM AUTHOR]

Correction for ‘Unexpected arene ligand exchange results in the oxidation of an organoruthenium anticancer agent: the first X-ray structure of a protein–Ru(carbene) adduct’ by Matthew P. Sullivan et al., Chem. Commun., 2018, 54, 6120–6123. [ABSTRACT FROM AUTHOR]

Thermal reaction of a bis(silyl) complex Ru{κ3Si,Si,N-2,6-(Me2SiCH2)2C5H3N}(CO)3in refluxing toluene gave a dinuclear ruthenium complex Ru2(μ-SiMe2)[(Me2SiCH2)C5H3N{CH2Si(Me)CH2}C5H3N(CH2SiMe3)](CO)4, which has a 3c–2e Ru–Si–C interaction. [ABSTRACT FROM AUTHOR]