Awesome and Easy Science Experiments about Dichloro(benzene)ruthenium(II) dimer

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The ligand [2-chloro-3-(3-(2-pyridyl)pyrazolyl)quinoxaline] (L) have been prepared from 2,3-dichloroquinoxaline and 3-(2-pyridyl)-1H-pyrazole. The reaction of N,N?-bidentate chelating ligand (L) and the corresponding metal precursors [(arene)Ru(mu-Cl)Cl]2 {arene = p-cymene, benzene, hexamethylbenzene (HMB)}, [Cp?M(mu-Cl)Cl]2 {Cp? = pentamethylcyclopentadiene; M = Rh, Ir}, [CpRuCl(PPh3)2] {Cp = cyclopentadiene; PPh3 = triphenylphosphine} and [Re(CO)5Br] leads to the formation of mononuclear metal complexes having the general formula [(arene)Ru(L)Cl]+ where, arene = p-cymene (1), C6H6 (2), C6Me6 (3), [Cp?M(L)Cl]+ where, M = Rh (4), Ir (5), [CpRu(L)PPh3]+ (6) and [Re(L)(CO)3Br] (7). All these platinum group metal complexes were synthesized and isolated with PF6 counter anions except complex (6) whereas the complex (7) was isolated as a neutral complex. All these metal complexes were fully characterized by FT-IR, 1H NMR, UV-Vis and mass spectroscopic and analytical techniques. Moreover, the complexes (1-7) were determined by the single-crystal X-ray diffraction analysis. Single crystal X-ray data confirms that the coordination occurs to the N-atoms of the pyridyl and pyrazolyl moieties of the ligand. Agar well diffusion method reveals that complexes (1, 2, 4 and 5) are having good antibacterial activity against the three different bacteria, pathogenic test organisms Staphylococcus aureus subsp. aureus, Staphylococcus epidermidis and Escherichia coli. The electronic transitions and absorption band of the complexes calculated by using time-dependent DFT method are in good agreement with the experimental results.

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

Can You Really Do Chemisty Experiments About Cis-Dichlorobis(2,2′-bipyridine)ruthenium(II)

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Two new complexes of Ru(II) with mixed ligands were prepared: [Ru(bpy)2smp](PF6) (1) and [Ru(phen)2smp](PF6) (2), in which smp = sulfamethoxypyridazine; bpy = 2,20-bipyridine; phen = 1,10-phenanthroline. The complexes have been characterized by elemental and conductivity analyses; infrared, NMR, and electrospray ionization mass spectroscopies; and X-ray diffraction of single crystal. Structural analyses reveal a distorted octahedral geometry around Ru(II) that is bound to two bpy (in 1) or two phen (in 2) via their two heterocyclic nitrogens and to two nitrogen atoms from sulfamethoxypyridazine-one of the methoxypyridazine ring and the sulfonamidic nitrogen, which is deprotonated. Both complexes inhibit the growth of chronic myelogenous leukemia cells. The interaction of the complexes with bovine serum albumin and DNA is described. DNA footprinting using an oligonucleotide as substrate showed the complexes’ preference for thymine base rich sites. It is worth notifying that the complexes interact with the Src homology SH3 domain of the Abl tyrosine kinase protein. Abl protein is involved in signal transduction and implicated in the development of chronic myelogenous leukemia. Nuclear magnetic resonance (NMR) studies of the interaction of complex 2 with the Abl-SH3 domain showed that the most affected residues were T79, G97, W99, and Y115.

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

Some scientific research about Dichloro(benzene)ruthenium(II) dimer

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A quite general approach for the preparation of eta5- and eta6-cyclichydrocarbon platinum group metal complexes is reported. The dinuclear arene ruthenium complexes [(eta6-arene)Ru(mu-Cl)Cl] 2 (arene = C6H6, C10H14 and C6Me6) and eta5- pentamethylcyclopentadienyl rhodium and iridium complexes [(eta5- C5Me5)M(mu-Cl)Cl]2 (M = Rh and Ir) reacts with two equivalents of the ligands 2-chloro-3-(pyrazolyl)quinoxaline (L 1) and di-(2-pyridyl)amine (L2) in presence of NH 4PF6 to afford the corresponding mononuclear complexes of the type [(eta6-arene)Ru(L1)Cl]PF6 {arene = C6H6 (1), C10H14 (2) and C 6Me6 (3)}, [(eta6-arene)Ru(L 2)Cl]PF6 {arene = C6H6 (4), C 10H14 (5) and C6Me6 (6)}, and [(eta5-C5Me5)M(L1)Cl]PF 6 {M = Rh (7), Ir (8)} and [(eta5-C5Me 5)M(L2)Cl]PF6 {M = Rh (9), Ir (10)}. However the mononuclear eta5-cyclopentadienyl analogues such as [(eta5-C5H5)Ru(PPh3) 2Cl], [(eta5-C5H5)Os(PPh 3)2Br], [(eta5-C5Me 5)Ru(PPh3)2Cl] and [(eta5-C 9H7)Ru(PPh3)2Cl] complexes react in presence of one equivalent of ligands 2-chloro-3-(pyrazolyl)quinoxaline (L 1) and di-(2-pyridyl)amine (L2) and one equivalent of NH4PF6 in methanol yielded mononuclear complexes [(eta5-C5H5)Ru(PPh3)(L 1)]PF6 (11), [(eta5-C5H 5)Os(PPh3)(L1)]PF6 (12), [(eta5-C5Me5)Ru(PPh3)(L 1)]PF6 (13) and [(eta5-C9H 7)Ru(PPh3)(L1)]PF6 (14) and [(eta5-C5H5)Ru(PPh3)(L 2)]PF6 (15), [(eta5-C5H 5)Os(PPh3)(L2)]PF6 (16), [(eta5-C5Me5)Ru(PPh3)(L 2)]PF6 (17) and [(eta5-C9H 7)Ru(PPh3)(L2)]PF6 (18) respectively. These compounds have been systematically characterized by IR, NMR and mass spectrometry. The molecular structures of 2, 4 and 15 have been established by single crystal X-ray diffraction study and some of the representative complexes have also been studied by UV-visible spectroscopy. The crystal packing diagram of complex 4 reveals that the cation [(eta6-C6H6)Ru(L2)Cl]+ is engaged in non-covalent interaction. This compound gives rise to a 1D helical architecture along the ‘a’ axis via intermolecular NH?Cl hydrogen bonds.

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

Awesome Chemistry Experiments For Cis-Dichlorobis(2,2′-bipyridine)ruthenium(II)

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New heteroleptic dual anchored Ruthenium(II) sensitizer (RNPDA) was synthesized using 4-Nitro-phenylenediamine Schiff base as ligand (NPD-PC) and the complex was characterized by diverse spectroscopic techniques. The structure of NPD-PC was resolved by single crystal X-ray diffraction method. FT-IR spectra showed that the 4-Nitro-phenylenediamine ligand (NPD-PC) behaves as a bidentate N and N donors coordinate to ruthenium via the azomethine nitrogen and the amine nitrogen. Their optical and electrochemical properties were also investigated. The dye containing electron withdrawing group of pyridine and nitro group act as an anchoring unit and they evince sensitization behavior as well as fascinating interfacial phenomena on TiO2 substrates. The new ruthenium dye was used as photosensitizer for the DSSC applications which expressed overall photoconversion efficiency (eta) of 3.42%.

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

A new application about Dichloro(benzene)ruthenium(II) dimer

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

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, COA of Formula: C12H12Cl4Ru2.

Six Ru-eta6-C6H6-diphosphine complexes, [RuCl(eta6-C6H6)(BISBI)]Cl (1) (BISBI = 2,2?-bis(diphenylphosphinomethyl)-1,1?-biphenyl), [RuCl(eta6-C6H6)(BDPX)]Cl (2) (BDPX = 1,2-bis(diphenylphosphinomethyl)benzene), Ru2Cl4(eta6-C6H6)2(mu2-BDNA) (3) (BDNA = 1,8-bis(diphenylphosphinomethyl)naphthalene), [RuCl(eta6-C6H6)(BISBI)]BF4 (4), [RuCl(eta6-C6H6)(BDPX)]BF4 (5) and [(eta6-C6H6)2Ru2Cl2(mu2-Cl)(mu2-BDNA)]BF4 (6) were prepared and used as catalysts in hydrogenation of benzene. Their catalytic activities were obviously relative with the compositions or structures of these complexes. The hydrogenations of benzene catalyzed by complexes 1, 2 and 3 were homogeneous in the conditions of reaction temperature of 100 C and hydrogen pressure of 50 kg/cm2, complexes 4, 5 and 6 were simultaneously homogeneous and heterogeneous in the same reaction conditions. Among all complexes, 4, 5 and 6 were of higher catalytic activities than 1, 2 and 3. The dinuclear complex 6 in which one chlorine anion was substituted by one tetrafluoroborate gave the highest activity. The higher activities of complex 4, 5 and 6 were owing to the easy generation of catalytic active species and the formations of Ru(0) particles which were of the highly catalytic activity. As novel complexes, the compositions and structures of 1, 2, 4 and 5 were characterized by NMR spectra. The structures of 4 and 5 were further determined by elemental analysis and single crystal X-ray diffraction.

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

Archives for Chemistry Experiments of Cis-Dichlorobis(2,2′-bipyridine)ruthenium(II)

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The synthesis and photophysical properties of a series of 5-(2,2?-bipyridyl)acetylene-extended dithieno[3,2-b:2?,3?-d] phospholes involving one and two of the latter units are reported. Their molecular scaffolds were found to show limited solubility that could, however, be addressed with the installation of solubilizing groups at the bipyridine unit or the dithienophosphole scaffold, respectively. The photoluminescence features of the new pi-conjugated oligomers could be manipulated through complexation to a variety transition metal species (Zn, Pt, and Ru), resulting in polarizable systems with intramolecular charge transfer and/or phosphorescence features, or redox-switching.

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

A new application about Cis-Dichlorobis(2,2′-bipyridine)ruthenium(II)

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The homochiral multinuclear Ru complexes of the oligomeric bibenzimidazoles were synthesized using Lambda-[Ru-(bpy)2(py)2][(-)-O, O?-dibenzoyl-L-tartrate]-12H2O as an enantiomerically pure building block. The complexations proceed with the retention of configuration to provide well-defined mononuclear, dinuclear, tetranuclear, and octanuclear Ru complexes successfully. The optical purity and the absolute configurations of the complexes were determined by NMR and circular dichroism spectrometry. The rare X-ray structure of a tetranuclear complex Lambda4-[(Ru(bpy) 2)4(bis(BiBzlm))](PF6)4 was resolved. The crystallographic analysis reveals that all the four Ru centers have Lambda octahedral configurations, with a Ru-Ru separation of 5.509 A across the bridging bibenzimidazole ligand, which maintains near coplanarity. The UV-vis spectroscopic and electrochemical properties of the homochiral multinuclear assemblies were studied, indicating weak electronic communications between the metal centers.

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

Final Thoughts on Chemistry for Dichloro(benzene)ruthenium(II) dimer

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In an article, published in an article, once mentioned the application of 37366-09-9, Name is Dichloro(benzene)ruthenium(II) dimer,molecular formula is C12H12Cl4Ru2, is a conventional compound. this article was the specific content is as follows.Safety of Dichloro(benzene)ruthenium(II) dimer

Cyclometalated derivatives of ring-substituted N,N-dimethylbenzylamines with controlled redox potentials as potent mediators of bioelectrochemical electron transport are reported. The cycloruthenation of R1R 2R3C6H2CH2NMe 2 (R1, R2, R3 = H, Me, tBuO, MeO, NMe2, F, CF3, CN, NO2) by [(eta6-C6H6)RuCl(mu-Cl)]2 in the presence of NaOH/KPF6 in acetonitrile or pivalonitrile affords cyclometalated complexes [(eta6-C6H6) Ru(C6HR1R2R3-o-CH 2NMe2)(RCN)]PF6 [R = Me (1) and R = CMe 3 (2)] in good yields. Reactions of complexes 1 and 2 with 2,2?-bipyridine (bpy) in acetonitrile or pivalonitrile result in dissociation of eta6-bound benzene and the formation of [Ru(C 6HR1R2R3-o-CH2NMe 2)(bpy)(RCN)2]PF6 [R = Me (3) and R = CMe 3 (4)]. All new compounds have been fully characterized by mass spectrometry, 1H/13C NMR, and IR spectroscopy. An X-ray crystal structural investigation of complex 1 (R1/R 2/R3 = H/H/H) and two complexes of type 3 (R 1/R2/R3 = MeO/H/H, MeO/MeO/H) has been performed. Acetonitrile ligands of 3 are mutually cis and the sigma-bound carbon is trans to one of the bpy nitrogens. Measured by the cyclic voltammetry in MeOH as solvent, the redox potentials of complexes 3 for the Ru II/III feature cover the range 320-720 mV (versus Ag/AgCl) and correlate linearly with the Hammett (sigmap++sigmam) constants. Complexes 3 mediate efficiently the electron transport between the active site of PQQ-dependent glucose dehydrogenase (PQQ = pyrroloquinoline quinone) and a glassy carbon electrode. Determined by cyclic voltammetry the second order rate constant for the oxidation of the reduced (by d-glucose) enzyme active site by RuIII derivative of 3 (R1/R2/R3 = H) (generated electrochemically) is as high as 4.8 × 107 M -1 s-1 at 25C and pH 7.

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

Top Picks: new discover of Cis-Dichlorobis(2,2′-bipyridine)ruthenium(II)

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We describe in this paper the properties of [RuII/III(bpy) 2ClL]+1/+2 and [RuII/III(bpy)2L 2]+2/+3. L = ditolyl-3-pyridylamine (dt3pya) is a redox active ligand related to triarylamines, which is very similar to 3-aminopyridine except for the reversible redox behavior. The monosubstituted complex shows a metal-to-ligand charge-transfer (MLCT) at 502 nm, and reversible waves in acetonitrile at E0(RuIII/II) = 1.07 V, E 0(L+/0) = 1.46 V (NHE). The disubstituted complex shows an MLCT at 461 nm, a photorelease of dt3pya with quantum yield of 0.11 at 473 nm, and two reversible one-electron overlapped waves at 1.39 V associated with one of the ligands (1.37 V) and RuIII/II (1.41 V). Further oxidation of the second ligand at 1.80 V forms a 2,2?-bipiridine derivative, in an irreversible reaction similar to dimerization of triphenylamine to yield tetraphenylbenzidine. In the dioxidized state, the spectroelectrochemistry of the disubstituted complex shows a ligand-to-ligand charge transfer at 1425 nm, with a transition moment of 1.25 A and an effective two-state coupling of 1200 cm-1. No charge transfer between ligands was observed when Ru was in a 2+ oxidation state. We propose that a superexchange process would be involved in ligand-metal-ligand charge transfer, when ligands and metals are engaged in complementary pi interactions, as in metal-ligand-metal complexes. Best orbital matching occurs when metallic donor fragments are combined with acceptor ligands and vice versa. In our case, RuIII bridge (an acceptor) and two dt3pya (donors, one of them being oxidized) made the complex a Robin-Day Class II system, while the RuII bridge (a donor, reduced) was not able to couple two dt3pya (also donors, one oxidized).

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

Discovery of Dichloro(benzene)ruthenium(II) dimer

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A strategy for targeting protein kinases with large ATP-binding sites by using bulky and rigid octahedral ruthenium complexes as structural scaffolds is presented. A highly potent and selective GSK3 and Pim1 half-sandwich complex NP309 was successfully converted into a PAK1 inhibitor by making use of the large octahedral compounds Lambda-FL172 and Lambda-FL411 in which the cyclopentadienyl moiety of NP309 is replaced by a chloride and sterically demanding diimine ligands. A 1.65 A cocrystal structure of PAK1 with Lambda-FL172 reveals how the large coordination sphere of the ruthenium complex matches the size of the active site and serves as a yardstick to discriminate between otherwise closely related binding sites. Copyright

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