- Synthesis and characterization of [Ru(NO)(bpp)Cl · 2H2O] [bpp = N,N′-bis(2-pyridinecarboxamide)-1,3-propane dianion] and [Ru(NO)(bpe)Cl · 2H2O] [bpe = N,N′-bis(2- pyridinecarboxamide)-1,2-ethane dianion]
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Two ruthenium nitrosyl bis-pyridyl/biscarboxamido compounds, [Ru(NO)(bpp)Cl · 2H2O] [bpp = N,N′-bis(2-pyridinecarboxamide)-1,3- propane dianion] and [Ru(NO)(bpe)Cl · 2H2O] [bpe = N,N′-(bis-2-pyridinecarboxamide)-1,2-ethane dianion] h
- Fortney, Carol F.,Geib, Steven J.,Lin, Fu-Tyan,Shepherd, Rex E.
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- Syntheses, structures, and catalytic properties of ruthenium(II) nitrosyl complexes with pyridine-functionalized N-heterocyclic carbenes
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Ruthenium(II) nitrosyl complexes with pyridine-functionalized N-heterocyclic carbenes [(L)Ru(NO)Cl3] [L = 3-tert-butyl-1-(2- pyridyl)imidazol-2-ylidene, 2a; 3-n-butyl-1-(2-pyridyl)imidazol-2-ylidene, 2b; 3-tertbutyl-l-picolylimidazol-2-ylidene,
- Cheng, Yong,Sun, Jia-Feng,Yang, Hong-Ling,Xu, Hui-Jun,Li, Yi-Zhi,Chen, Xue-Tai,Xue, Zi-Ling
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- Linear and bent oxo-bridged dimers of ruthenium pyrazole nitrosyls
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The nitrosylation of RuCl3·(H2O)(x) in thionyl chloride affords anhydrous [RuCl3(NO)] which, when treated with a variety of ligands L, gives [RuCl3(L)2(NO)]. For L = 3,5-dimethylpyrazole (dmpH) it is possible to isolate and characterize the corresponding monomeric complex 1 as well as unusual oxo bridged dimeric products with nitrosyl ligands trans to the oxo ligand with either a linear geometry, as in trans O[RuCl2(NO)(dmpH)2] (2) and [Cl4(NO)Ru]O[Ru-(NO)(dmpH)4] (4), or with a bent geometry, as in trans O[RuCl(NO)(dmpH)(μ-dmp)]2 (3). These compounds have been characterized by elemental analysis and vibrational and NMR spectroscopy, as well as by single crystal X-ray diffraction. Collectively the structural and spectroscopic data support a delocalized π-bonding model across the linear ON-Ru-O-Ru-NO framework.
- Bohle, D. Scott,Sagan, Elizabeth S.
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- Synthesis and Crystal Structure of Binuclear Ruthenium Nitride Complex with Lithium Counter Cations as a Precatalyst of Water Oxidation Reaction in Artificial Photosynthesis
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Abstract: Lithium salt of binuclear ruthenium nitride complex Li3[Ru2NCl8 · 2H2O] has been synthesized. Structure of the complex was studied by X-ray diffraction. Triclinic crystals, space group (Formula presented.)a = 7.4044 ?, b?= 8.1818 ?, c = 8.7123 ?, α = 117.970°, β = 115.139°, γ = 90.014°, V = 408.65 ?3, Z = 1, ρcalcd = 2.654 g/cm3. The complex is thermally stable, it dimerizes in acid medium to give tetranuclear cluster Ru4N2O5+, an active catalyst of four-electron oxidation of water to form O2. Catalyst efficiency in the reaction of water oxidation (TON) reaches 356 over 1 h.
- Tkachenko, V. Yu.,Dzhabieva,Shilov,Avdeeva,Dobrygin,Dzhabiev
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p. 354 - 360
(2021/03/23)
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- Enhanced luminescence intensity of near-infrared-sensitized upconversion nanoparticles: Via Ca2+doping for a nitric oxide release platform
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Light-induced NO release based on exogenous NO donors has attracted substantial attention in clinical applications; the induction light source usually converts near-infrared light to blue or ultraviolet light. However, the low efficiency of near-infrared light-assisted chemical light energy conversion remains a challenge, especially for NaYF4:Yb3+/Tm3+ photoconverting near-infrared light to ultraviolet (UV) and blue light. In this paper, a luminescence-enhanced strategy is reported by doping Ca2+ into NaYF4:Yb3+/Tm3+ and coating it with NaGdF4 through a two-step solvothermal method. Then, UCNPs modified with methyl-β-cyclodextrin (M-β-CD) are loaded on a ruthenium nitrosyl complex [(3)Ru(NO)(Cl)] as nitric oxide release-molecules (NORMs). X-ray diffraction (XRD) and energy-dispersive X-ray spectroscopy (EDS) data demonstrated that Ca2+ was successfully doped into NaYF4:Yb3+/Tm3+ nanoparticles as the core, and a pure hexagonal phase, NaYF4, was obtained from the doping of Ca2+. TEM revealed that the crystallinity was significantly improved after Ca2+ doping, and the core-shell structure was successfully synthesized, with NaGdF4 directionally grown on the NaYF4:Ca/Yb/Tm core. Fluorescence tests showed that, especially in the ultraviolet and blue light excitation wavelength regions, the UC emission intensity of the Ca-doped NaYF4:Yb3+/Tm3+?NaGdF4 core-shell UCNPs increased by 302.95 times vs. NaYF4:Yb3+/Tm3+ UCNPs. Finally, the release of NO was tested by the Griess method. Under 980 nm irradiation, the cell viability distinctly decreased with increasing UCNPs?M-β-CD-NORMs concentration. This study shows that NORM release of NO is triggered by enhanced up-converted UV and blue light, which can be used for the development of UV photo-sensitive drugs. This journal is
- Hu, Yanbing,Kong, Xiangfei,Lin, Shao Wei,Ou, Jun,Qin, Aimiao,Resch-Genger, U.,Wen, Jian,Zhang, Rui,Zhao, Jing
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p. 6481 - 6489
(2020/08/19)
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- METHODS FOR PRODUCING NANOPARTICULATE METAL COMPLEXES AND ALTERING NANOPARTICLE MORPHOLOGY
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Nanoparticulate metal complexes, such as those involving ruthenium, iron, cobalt, and nickel salens, are formed using precipitation with compressed antisolvent technology. The nanoparticle morphology may be altered by altering the planarity of molecular structure of the metal complex starting material.
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Page/Page column 8; 9
(2010/11/25)
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- Synthesis, molecular, crystal and electronic structure of [RuCl 3(NO)(PPh3)(HPz)]
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The reaction of [RuCl3(NO)(PPh3)2] complex with pyrazole has been examined. The new ruthenium complex - [RuCl 3(NO)(PPh3)(C3 H4N2)] has been obtained and characterised by IR and UV-Vis measurements. Crystal, molecular and electronic structures of the complexes have been determined. The electronic spectrum of the complex was calculated by the TDDFT method.
- Ma?ecki,Jaworska,Kruszynski
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p. 359 - 368
(2008/10/09)
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- Nitrosyl ruthenium complexes with general formula [RuCl3(NO)(P-P)] (P-P = {PPh2(CH2)nPPh2}, n = 1-3 and {PPh2-CH = CH-PPh2}). X-ray structure of [RuCl3(NO){PPh2(CH2)3PPh 2}]
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Ruthenium(II) complexes with general formula [RuCl3(NO)(P-P)] were obtained in the solid state, where P-P = PPh2(CH2)nPPh2 (n = 1-3) and PPh2-CH = CH-PPh2. The 31P NMR spectra of these compounds measured in CH2Cl2 showed only singlets, consistent with a fac configuration containing two equivalent phosphorus atoms. However the X-ray diffraction data show that the [RuCl3(NO){PPh2(CH2)3PPh 2}] complex crystallizes in a mer configuration, where one of the phosphorus atoms is trans to the NO group, in a slightly distorted octahedral geometry. Copyright
- Batista, Alzir A.,Pereira, Cid,Queiroz, Salete L.,De Oliveira, Luiz A. A.,Santos, Regina H. De A.,Gambardella, Maria Teresa Do P.
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p. 927 - 931
(2008/10/09)
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- Chloro Nitrosyl Complexes of Ruthenium(II). The Crystal Structure of (PPh3Me)22*2CH2Cl2
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Ruthenium trichloride, obtained from its hydrate with thionyl chloride, reacts with excess trichloronitromethane yielding polymer ; by addition of triphenylmethylphosphonium chloride in dichloromethane (PPh3Me)22*2CH2Cl2 is obtained, the IR spectrum of which is reported and assigned.Its crystal structure was determined with X-ray diffraction data (6404 independent observed reflexions, R = 0.068).Crystal data at -90 deg C: a = 1145, b = 1591, c = 1406 pm, β = 96.0 deg, Z = 2, space group P21/c.The structure consists of PPh3Me(+) cations, centrosymmetric anions 2(2-) nearly fulfilling C2h symmetry, and CH2Cl2 molecules.In the anions the Ru atoms are linked via chloro bridges; the nitrosyl groups occupy axial positions with bond distances RuN of 175 and NO of 113 pm, bond angle RuNO 172.7 deg. - Key words: Chloro Nitrosyl Complexes of Ruthenium(II), Syntheses, IR Spectra, Crystal Structure
- Fenske, Dieter,Demant, Udo,Dehnicke, Kurt
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p. 1672 - 1676
(2007/10/02)
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