Tag: M.W:400-500

Application of 15746-57-3. Let¡¯s face it, organic chemistry can seem difficult to learn. Especially from a beginner¡¯s point of view. Like 15746-57-3, Name is Cis-Dichlorobis(2,2′-bipyridine)ruthenium(II). In a document type is Article, introducing its new discovery.

Diastereoselective preparation and characterization of ruthenium bis(bipyridine) sulfoxide complexes

A new concept in the synthesis of optically active octahedral ruthenium complexes was realized for the first time when cis- or trans-Ru(bpy)2Cl, (cis- or trans-1) was reacted with either (R)-(+)- or (S)-(-)-methyl p-tolyl sulfoxide (2 or 3); this novel asymmetric synthesis leads to the diastereoselective formation of the ruthenium bis(bipyridine) complex cis-Delta-[Ru(bpy)2(2)Cl]Cl (4) (49.6% de) or cis-Lambda-[Ru(bpy)2(3)Cl]Cl (5) (48.4% de), respectively. cis- or trans-Ru(dmbpy)2Cl2 (cis- or trans-6) (dmbpy = 4,4′-dimethyl-2,2′-bipyridine) also reacts with 2 or 3, leading to the diastereoselective formation of cis-Delta-[Ru(dmbpy)2(2)Cl]Cl (7) (59.5% de) or cis-Lambda-[Ru(dmbpy)2(3)Cl]Cl (8) (57.2% de), respectively. The diastereoselectivity of these reactions is governed solely by the chirality of the sulfoxide nucleophile. This represents the first process by which a sigma-bonded ligand occupying only a single coordination site has had such an important influence on the stereochemical outcome of a ruthenium bis(bipyridine) complex formation. These novel complexes were fully characterized by elemental analysis and IR, UV/vis, and 1H, 13C, and 2D NMR spectroscopy. An investigation into the chiroptical properties of these novel ruthenium bis(bipyridine) sulfoxide complexes has been carried out, and circular dichroism spectra are used to assign absolute stereochemistry.

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Reference£º
Highly efficient and robust molecular ruthenium catalysts for water oxidation,
Catalysts | Special Issue : Ruthenium Catalysts – MDPI

A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 15746-57-3, Name is Cis-Dichlorobis(2,2′-bipyridine)ruthenium(II), molecular formula is C20H16Cl2N4Ru. In a Article£¬once mentioned of 15746-57-3, category: ruthenium-catalysts

Synthesis and electrochemical properties of bis(bipyridine)ruthenium(II) complexes bearing pyridinyl- and pyridinylidene ligands induced by cyclometalation of N?-methylated bipyridinium analogs

Ruthenium complexes with bipyridine-analogous quaternized (N,C) bidentate ligands [RuL(bpy)2](PF6)2 (bpy = 2,2?-bipyridine, (1), L = L1 = N?-methyl-2,4?- bipyridinium; (2), L = L2 = N?-methyl-2,3?-bipyridinium) were synthesized and characterized. The structure of complex 2 was determined by the X-ray structure analysis. The 13C{1H} NMR spectroscopic and cyclic voltammetric studies indicate that the coordination modes of these ligands are quite different, that is, the C-coordinated rings of (N,C)-ligands in 1 and 2 are linked to ruthenium(II) with a pyridinium manner and a pyridinylidene one, respectively. The ligand-localized redox potentials of 1 and 2 also revealed the substantial difference in the electron donating ability of both ligands.

Sometimes chemists are able to propose two or more mechanisms that are consistent with the available data.category: ruthenium-catalysts, If a proposed mechanism predicts the wrong experimental rate law, however, the mechanism must be incorrect.Welcome to check out more blogs about 15746-57-3, in my other articles.

Reference£º
Highly efficient and robust molecular ruthenium catalysts for water oxidation,
Catalysts | Special Issue : Ruthenium Catalysts – MDPI

Chemistry is an experimental science, and the best way to enjoy it and learn about it is performing experiments.Introducing a new discovery about 37366-09-9, Name is Dichloro(benzene)ruthenium(II) dimer, Formula: C12H12Cl4Ru2.

Ruthenium-catalyzed ring-opening metathesis polymerization of cycloolefins initiated by diazoesters

Addition of catalytic amounts of diazoesters to various ruthenium complexes, including some diruthenium(II,II) tetrakis carboxylates, led to new catalyst systems that promoted the ROMP not only of norbornene (bicyclo[2.2.1]heptene) but also of cyclooctene and cyclopentene. The conversion and the cis content of the polymers varied widely and depended on the nature of the catalyst precursor.

Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.Formula: C12H12Cl4Ru2. In my other articles, you can also check out more blogs about 37366-09-9

Reference£º
Highly efficient and robust molecular ruthenium catalysts for water oxidation,
Catalysts | Special Issue : Ruthenium Catalysts – MDPI

The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.37366-09-9, Name is Dichloro(benzene)ruthenium(II) dimer, molecular formula is C12H12Cl4Ru2. In a Patent£¬once mentioned of 37366-09-9, name: Dichloro(benzene)ruthenium(II) dimer

Organometallic compounds for the treatment of cancer

The present invention relates to novel organometallic compounds for use as a medicine, in particular in photodynamic therapy against various diseases, such as cancer. The compounds comprise a central porphyrin or phtalocyanine backbone to which ligand linkers coordinated to at least one transition metal are attached. Eta-5 or eta-6 arenes further bind to the transition metal. According to a preferred embodiment, the compound is a tetranuclear Ruthenium (+II) complex.

Note that a catalyst decreases the activation energy for both the forward and the reverse reactions and hence accelerates both the forward and the reverse reactions.name: Dichloro(benzene)ruthenium(II) dimer, you can also check out more blogs about37366-09-9

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Highly efficient and robust molecular ruthenium catalysts for water oxidation,
Catalysts | Special Issue : Ruthenium Catalysts – MDPI

Synthetic Route of 37366-09-9, Chemistry can be defined as the study of matter and the changes it undergoes. You¡¯ll sometimes hear it called the central science because it is the connection between physics and all the other sciences, starting with biology.37366-09-9, Name is Dichloro(benzene)ruthenium(II) dimer, molecular formula is C12H12Cl4Ru2. In a patent, introducing its new discovery.

Hydrogen Activation by Arene Ruthenium Complexes in Aqueous Solution. Part 2. Build-up of Cationic Tri- and Tetra-nuclear Ruthenium Clusters with Hydrido Ligands

The low-pressure hydrogenation of the hydrolysis mixture of in water (1.5 atm, 20 deg C) led, in the presence of NaClO4, to the oxo-capped trinuclear cluster cation (1+) 1 which crystallized as the perchlorate salt.The chloro-capped trinuclear cluster cation (2+) 2, crystallized as the dichloride, was accessible from the durene derivative by high-pressure hydrogenation (60 atm, 55 deg C) in water.In hot aqueous solution, the chloro-capped cluster 2 underwent hydrolysis to give the oxo-capped cluster (1+) 3.In the presence of NaBF4, the low-pressure hydrogenation (1.5 atm, 20 deg C) of the hydrolysis mixture of led to the tetranuclear tetrahydrido cluster cation (2+) 4 which precipitated as the tetrafluoroborate salt.Under high-pressure conditions (60 atm, 55 deg C) and in the absence of an additional salt, the hexahydrido cluster cation (2+) 5 was formed and obtained as the dichloride.By analogy, the p-cymene derivative gave (2+) 6.In contact with air, the hexahydrido clusters 5 and 6 were transformed into the corresponding tetrahydrido clusters (2+) 4 and (2+) 7.The hexahydrido cluster 5 is capable of hydrogenating fumaric acid to give succinic acid and 4; the latter adds molecular hydrogen to regenerate the hexahydrido species 5.The crystal and molecular structures of the cluster salts ClO4 (cation 1), BF4 (cation 3), Cl2 (cation 4) and 2 (cation 6) have also been determined.

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Reference£º
Highly efficient and robust molecular ruthenium catalysts for water oxidation,
Catalysts | Special Issue : Ruthenium Catalysts – MDPI

Synthetic Route of 15746-57-3, Catalysts are substances that increase the reaction rate of a chemical reaction without being consumed in the process. 15746-57-3, Name is Cis-Dichlorobis(2,2′-bipyridine)ruthenium(II), molecular formula is C20H16Cl2N4Ru. In a Article£¬once mentioned of 15746-57-3

Rodlike bimetallic ruthenium and osmium complexes bridged by phenylene spacers. Synthesis, electrochemistry, and photophysics

In the search for light-addressable nanosized compounds we have synthesized 10 dinuclear homometallic trisbipyridyl complexes of linear structure with the general formula [M(bpy)3-BL-M(bpy)3]4+ [M = Ru(II) or Os(II); BL = polyphenylenes (2, 3, 4, or 5 units) or indenofluorene; bpy = 2,2?-bipyridine]. By using a “chemistry on the complex” approach, different sizes of rodlike systems have been obtained with a length of 19.8 and 32.5 A for the shortest and longest complex, respectively. For one of the ruthenium precursors, [RUbpy-ph2-Si(CH3) 3][PF6]2, single crystals were obtained by recrystallization from methanol. Their photophysical and electrochemical properties are reported. All the compounds are luminescent both at room and low temperature with long excited-state lifetimes due to an extended delocalization. Nanosecond transient absorption showed that the lowest excited state involves the chelating unit attached to the bridging ligand. Electrochemical data indicated that the first reduction is at a slightly more positive potential than for the reference complexes [M(bpy)3]2+ (M = Ru, Os). This result confirms that the best acceptor is the bipyridine moiety connected to the conjugated spacers. The role of the tilt angle between the phenylene units, in the two series of complexes, for the ground and excited states is discussed.

The proportionality constant is the rate constant for the particular unimolecular reaction. the reaction rate is directly proportional to the concentration of the reactant. I hope my blog about 15746-57-3 is helpful to your research., Synthetic Route of 15746-57-3

Reference£º
Highly efficient and robust molecular ruthenium catalysts for water oxidation,
Catalysts | Special Issue : Ruthenium Catalysts – MDPI

A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 37366-09-9, Name is Dichloro(benzene)ruthenium(II) dimer, molecular formula is C12H12Cl4Ru2. In a Article£¬once mentioned of 37366-09-9, Computed Properties of C12H12Cl4Ru2

Self-aggregation of amino-acidate half-sandwich ruthenium(II) complexes in solution: From monomers to nanoaggregates

The aggregation tendency of [RuCl(AA)(Arene)] complexes (1, AA = amino acidate = Gly, Arene = p-cymene; 2, AA = Ala, Arene = p-cymene; 3, AA = N,N?-dimethyl-Gly, Arene = benzene; 3b, AA = N,N?-dimethyl-Gly, Arene = p-cymene; 3c, AA = MAT-dimethyl-Gly, Arene = hexamethylbenzene; 4a, AA = t-Leu, Arene = benzene; 4b, AA = t-Leu, Arene = p-cymene; 4c, AA = t-Leu, Arene = hexamethylbenzene; 5, AA = alpha,alpha?-Me2-Gly, Arene = p-cymene; 6, AA = alpha,alpha?-Ph2-Gly, Arene = p-cymene; 7, AA = Pro, Arene = p-cymene) as a function of the concentration and solvent (CDCl3, CD2Cl2, acetone-d6, and 2-propanol-d8) was investigated through diffusion NMR measurements. The equilibrium constant (K) and the standard variation of the free energy (DeltaG) for the aggregation process were determined by applying the Equal K self-aggregation model. The highest level of aggregation was observed for complexes 1, 2, and 4, bearing the NH2 moiety, which was involved in intermolecular H-bonding. Complex 2 formed aggregates with a hydrodynamic radius (rH) equal to 20.8 A in CDCl3 (DeltaG296K == -7.1 ¡À 0.7 kcal mol-1) at a concentration of 124.9 mM, corresponding to an aggregation number (N) of 133. On the other hand, complex 3c did not show any tendency to aggregate (N = 1.1, 0.5 mM in CDCl3). The aggregation tendency decreased as the steric hindrance of arene (4a > 4b > 4c) and AA (1 ? 2 > 5 ? 4b > 6) and the polarity and proticity of the solvent increased. For complex 2, -DeltaG(kcal/mol) was 7.1 in CDCl3 (epsilonr = 4.81) > 5.6 in CD2Cl2 (epsilonr = 8.93) > 3.9 in acetone-d6 (epsilonr = 20.56) > 3.0 in 2-propanol-d8 (epsilonr = 19.92). While the two diastereoisomers of complexes 2 and 4b showed substantially the same tendency to self-aggregate, diastereoisomer (RRu, SN, S C)-7 showed a remarkably higher aggregation tendency than the other one [(SRu, SN, SC)-7] throughout the entire concentration range (1.4-178.0 mM) in CDCl3, indicating that a diastereoselective recognition process is occurring in solution [|Delta(DeltaG296K)| = 1.8 ¡À 0.5 kcal mol -1].

Sometimes chemists are able to propose two or more mechanisms that are consistent with the available data.Computed Properties of C12H12Cl4Ru2, If a proposed mechanism predicts the wrong experimental rate law, however, the mechanism must be incorrect.Welcome to check out more blogs about 37366-09-9, in my other articles.

Reference£º
Highly efficient and robust molecular ruthenium catalysts for water oxidation,
Catalysts | Special Issue : Ruthenium Catalysts – MDPI

A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 15746-57-3, Name is Cis-Dichlorobis(2,2′-bipyridine)ruthenium(II), molecular formula is C20H16Cl2N4Ru. In a Article£¬once mentioned of 15746-57-3, Application In Synthesis of Cis-Dichlorobis(2,2′-bipyridine)ruthenium(II)

DNA Photocleavage by Non-innocent Ligand-Based Ru(II) Complexes

In this work, we demonstrate for the first time that [Ru(bpy)2(R-OQN)]+ complexes (bpy = 2,2?-bipyridine, R-OQN = 5-chloro-8-oxyquinolate or 5-bromo-8-oxyquinolate) are able to generate hydroxyl radicals and cleave DNA effectively upon visible light irradiation. The potent electron-donating ability of the R-OQN-based non-innocent ligands gives the complexes a high reducing capability, favoring the generation of superoxide anion radicals from which hydroxyl radicals may be generated. More interestingly, halogen substitution plays an important role. When the 5-Cl- or 5-Br-8-oxyquinolate ligand is replaced by 8-oxyquinolate or 5-CH3-8-oxyquinolate, the corresponding complexes lose their hydroxyl radical-generation and DNA photocleavage abilities. These findings open new applications for the non-innocent ligand-based Ru(II) complexes in the fields of biology and medicine, such as in photodynamic therapy (PDT).

Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.Application In Synthesis of Cis-Dichlorobis(2,2′-bipyridine)ruthenium(II). In my other articles, you can also check out more blogs about 15746-57-3

Reference£º
Highly efficient and robust molecular ruthenium catalysts for water oxidation,
Catalysts | Special Issue : Ruthenium Catalysts – MDPI

37366-09-9, Name is Dichloro(benzene)ruthenium(II) dimer, molecular formula is C12H12Cl4Ru2, belongs to ruthenium-catalysts compound, is a common compound. In a patnet, once mentioned the new application about 37366-09-9, Computed Properties of C12H12Cl4Ru2

METHOD FOR PRODUCING A RUTHENIUM COMPLEX

Provided is a method for producing a ruthenium complex comprises the step of reacting a ruthenium compound represented by general formula (1): [RuX(L)(PP)]X ??(1), wherein Ru represents a ruthenium atom; X represents a halogen atom; L represents an arene; and PP represents an optically active bisphosphine, with a carboxylate salt represented by general formula (2): R1CO2M ??(2), wherein M represents a monovalent cation; and R1 represents a group selected from the group consisting of alkyl groups, haloalkyl groups, phenyl groups optionally having a substituent(s), 1-aminoalkyl groups and 1-amino-1-phenylalkyl groups, to produce a ruthenium complex represented by general formula (3): Ru(OCOR1)2(PP) ??(3), wherein R1 represents the group selected from the group consisting of alkyl groups, haloalkyl groups, phenyl groups optionally having a substituent(s), 1-aminoalkyl groups and 1-amino-1-phenylalkyl groups; and PP represents the optically active bisphosphine.

Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.Computed Properties of C12H12Cl4Ru2. In my other articles, you can also check out more blogs about 37366-09-9

Reference£º
Highly efficient and robust molecular ruthenium catalysts for water oxidation,
Catalysts | Special Issue : Ruthenium Catalysts – MDPI

Reference of 37366-09-9. Let¡¯s face it, organic chemistry can seem difficult to learn. Especially from a beginner¡¯s point of view. Like 37366-09-9, Name is Dichloro(benzene)ruthenium(II) dimer. In a document type is Article, introducing its new discovery.

Synthesis of strained complexes of arene d6 metals with benzoylthiourea and their spectral studies

Halide bridged arene d6 platinum group metal precursors on treatment with thiourea derivatives (L1 and L2) yielded a series of neutral mono-dentate complexes (1?8). In general complexes have been formulated as [(arene)M(L)?1(S)Cl2] where L = L1, M = Ru, arene = p-cymene 1; benzene 2; arene = Cp* M = Rh 3 and Ir 4; L = L2, M = Ru, p-cymene 5; benzene 6; arene = Cp* M = Rh 7 and Ir 8. Structural studies revealed that thiourea ligand coordinate to the metal in a mono-dentate fashion via S atom. Further treatment of mono-dentate complexes 1 and 5 with NaN3 in polar solvent resulted in the formation of highly strained ?2(N,S) azido complexes 9 and 10 whereas reaction of complex 7 yielded a six membered ring ?2(S,O) azido complex 11. Reaction of complex 9 with dimethylacetylene dicarboxylate (DMAD) and diethylacetylene dicarboxylate (DEAD) leads to the formation of nitrogen (N2) bound triazolato complexes 12 and 13 whereas reaction of complex 11 with the same yielded nitrogen (N1) bound triazolato complexes 14 and 15. However reaction of complex 10 with both DMAD and DEAD leads to decomposition of the products. All these complexes have been characterized by various spectroscopic techniques. The molecular structures of the representative complexes 1, 2, 3, 6, 7, 9, 11 and 12 have been determined by single crystal X-ray diffraction study.

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Reference£º
Highly efficient and robust molecular ruthenium catalysts for water oxidation,
Catalysts | Special Issue : Ruthenium Catalysts – MDPI