Synthesis, spectroscopic and electrochemical characterization and molecular structure of polypyridyl ruthenium complexes containing 4,4′-azobis(pyridine)

Pourrieux, Gaston; Fagalde, Florencia; Katz, Néstor E.; Parella, Teodor; Benet‐Buchholz, Jordi; Llobet, Antoni

doi:10.1016/j.poly.2008.06.014

“…In both complexes, the ruthenium centers adopt a distorted octahedral geometry with bond distances and angles comparable to those of analogous complexes reported earlier in the literature. ,− An interesting feature here is the Ru–N–N–Ru torsion angles of 7.08° for 1 + and of 3.21° for 2 + (N–N are the nitrogen atoms of the pdz-dc 2– ligand), which reflect the need for the pdz-dc 2– ligand to adapt to the longer Ru–Cl distance (2.357 Å) ,, with regard to that of the bridging Ru–OH distance (2.089 Å). This is also responsible for a longer Ru–Ru distance for the chlorido complex 1 + (3.636 Å) ,, with regard to the hydroxido complex 2 + (3.431 Å).…”

Section: Resultsmentioning

confidence: 94%

New Dinuclear Ruthenium Complexes: Structure and Oxidative Catalysis

Giovanni

¹

,

Vaquer

²

,

Sala

³

et al. 2013

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The synthesis of new dinuclear complexes of the general formula {[Ru(II)(trpy)]2(μ-pdz-dc)(μ-(L)}(+) [pdz-dc is the pyridazine-3,6-dicarboxylate dianion; trpy is 2,2':6',2″-terpyridine; L = Cl (1(+)) or OH (2(+))] is described. These complexes are characterized by the usual analytical and spectroscopic techniques and by X-ray diffraction analysis. Their redox properties are characterized by means of cyclic voltammetry (CV) and differential pulse voltammetry (DPV). Complex 2(+) is used as the starting material to prepare the corresponding Ru-aqua complex {[Ru(II)(trpy)(H2O)]2(μ-pdz-dc)}(2+) (3(2+)), whose electrochemistry is also investigated by means of CV and DPV. Complex 3(2+) is able to catalytically and electrocatalytically oxidize water to dioxygen with moderate efficiencies. In sharp contrast, 3(2+) is a superb catalyst for the epoxidation of alkenes. For the particular case of cis-β-methylstyrene, the catalyst is capable of carrying out 1320 turnovers with a turnover frequency of 11.0 cycles min(-1), generating cis-β-methylstyrene oxide stereospecifically.

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“…They mainly involve intramolecular cyclization [4,5] multi component intermolecular cyclization [6] metal assisted coupling [7] microwave assisted coupling [8,9] or cycloaddition [10] azo electronic coupling [11] regioselective hetero Diels-Alder [12] and internal Mannich reaction [13]. They have been used in a wide hydrochloric acid.…”

Section: Introductionmentioning

confidence: 99%

Untitled

2017

International Journal of Chemistry and Materials Research

0

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Article HistoryThis work deals with the synthesis and cytotoxicity of some heterocyclic compounds starting from 2-acetylfuran. The title compound was used for the synthesis of thiophene derivative 3 through its reaction with elemental sulfur and ethyl cyanoacetate. Contribution/ Originality: This study contributes in the existing literature that thiophene derivatives can be produced from simple commercially available starting materials. The reactions of the produced thiophene derivative with different reagents gave both pyrazole and pyridine derivatives. The cytotoxicity of the produced products gave that some compounds with high potency.

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“…They mainly involve intramolecular cyclization [4,5] multi component intermolecular cyclization [6] metal assisted coupling [7] microwave assisted coupling [8,9] or cycloaddition [10] azo electronic coupling [11] regioselective hetero Diels-Alder [12] and internal Mannich reaction [13]. They have been used in a wide hydrochloric acid.…”

Section: Introductionmentioning

confidence: 99%

“…They have been used in a wide hydrochloric acid. The formed solid product was collected by filtration to obtain yellow crystals from 1,4- (11) To a solution of compound 3 (2.37 g, 0.01 mol) in 1,4-dioxane (40 mL), hydrazine hydrate (0.50 g, 0.01 mol) was added. The reaction mixture was heated under reflux for 3 h then poured onto ice/water containing few drops of hydrochloric acid.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Cytotoxicity of Thiophene, Thieno[2,3-C]Pyrazole, Thieno[2,3-D]Pyrimidine and Pyridine Derivatives Derived from 2-Acetylfuran

Mohamed

¹

,

Hamed

²

2017

International Journal of Chemistry and Materials Research

0

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Article HistoryThis work deals with the synthesis and cytotoxicity of some heterocyclic compounds starting from 2-acetylfuran. The title compound was used for the synthesis of thiophene derivative 3 through its reaction with elemental sulfur and ethyl cyanoacetate. Contribution/ Originality: This study contributes in the existing literature that thiophene derivatives can be produced from simple commercially available starting materials. The reactions of the produced thiophene derivative with different reagents gave both pyrazole and pyridine derivatives. The cytotoxicity of the produced products gave that some compounds with high potency.

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Synthesis, spectroscopic and electrochemical characterization and molecular structure of polypyridyl ruthenium complexes containing 4,4′-azobis(pyridine)

Cited by 13 publications

References 18 publications

New Dinuclear Ruthenium Complexes: Structure and Oxidative Catalysis

New Dinuclear Ruthenium Complexes: Structure and Oxidative Catalysis

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Synthesis and Cytotoxicity of Thiophene, Thieno[2,3-C]Pyrazole, Thieno[2,3-D]Pyrimidine and Pyridine Derivatives Derived from 2-Acetylfuran

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