Preparation, crystal structures and properties of half-sandwich ruthenium complexes containing salicylbenzoxazole ligands

Sun, Yongge; Dai, Yuan‐Chen; Xue, Wei; Cheng, Jing-Sheng; Jia, Wenhua

doi:10.1080/00958972.2015.1109643

Cited by 7 publications

(1 citation statement)

References 25 publications

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“…The nitrogen and oxygen atoms form a chelate ring with the Ru metal center, and a chlorine atom completes the coordination sphere. The Ru–N bond lengths of the Ru complexes are in the range of 2.0820(2) Å to 2.1260(2) Å and are consistent with Ru–N bond length values reported for those of half-sandwich ruthenium complexes. ,− The Ru–N bond length for 4 is 2.1067(14) Å and 2.1260(2) Å for complex 5 , both of which are slightly longer than those observed in the complexes 1 (2.0830(3) Å), 2 (2.0840(3) Å) and 3 (2.0820(2) Å) due to the more bulky substituent on oxazoline group. The Ru–O bond lengths (2.0601(12)-2.0680(18) Å) of the complexes are consistent with that of other Ru complexes reported. − It is noteworthy that the average Ru–Cl bond length in complex 3 (2.4283(8) Å) is slightly longer than that in complexes 1 (2.4252(10) Å), 2 (2.4253(11) Å), and 5 (2.4265(8) Å) but shorter than in complex 4 (2.4328(5) Å) due to the repulsion of phenyl group.…”

Section: Resultssupporting

confidence: 82%

Half-Sandwich Ruthenium Phenolate–Oxazoline Complexes: Experimental and Theoretical Studies in Catalytic Transfer Hydrogenation of Nitroarene

et al. 2017

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In this work, five ruthenium complexes [Ru(p-cymene)LCl] containing phenolate-oxazoline ligands [ 4); and 2-(4,4-dimethyl-4,5-dihydrooxazol-2-yl)phenol ( 5)] were synthesized and characterized. The solid-state structures of all ruthenium complexes were determined by single-crystal X-ray diffraction. The catalytic activities of these complexes in the transfer hydrogenation reaction of nitroarene to aniline were investigated. Aniline and their derivatives were obtained in good to excellent yields with isopropanol as the hydride source. The present protocol provides an environmentally benign synthetic method for the reduction of nitroarenes to anilines without employing harsh reaction conditions. Theoretical studies employing density functional theory were carried with the aim to propose a feasible reaction mechanism and to draw insights into the reactivity of the half-sandwich ruthenium catalyst.

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Section: Resultssupporting

confidence: 82%

Half-Sandwich Ruthenium Phenolate–Oxazoline Complexes: Experimental and Theoretical Studies in Catalytic Transfer Hydrogenation of Nitroarene

et al. 2017

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Half‐sandwich Ir (III) and Rh (III) complexes as catalysts for water oxidation with double‐site

Peng

Liu

Han

et al. 2019

Applied Organom Chemis

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A series of neutral binuclear iridium and rhodium complexes were synthesized based on bis‐imine ligands under mild conditions. These half‐sandwich late transition metal complexes were isolated in good yields and characterized by elemental analysis, 1H NMR, 13C NMR, HR‐MS, and FT‐IR spectroscopies, and the solid state structure of complexes 1 and 2 were further confirmed by single‐crystal X‐ray diffraction. Cyclic voltammetry (CV) characterization indicated that the complex 1 has the best catalyst for water oxidation process with TOF of 0.8 s−1 at low overpotential of 0.325 V in methanol‐phosphate buffer. The proposed double‐site water oxidation mechanism had been also speculated.

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Half‐sandwich ruthenium complexes with Schiff base ligands bearing a hydroxyl group: Preparation, characterization and catalytic activities

Jia

Wang

Zhi

2019

Applied Organom Chemis

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Three half‐sandwich ruthenium(II) complexes with hydroxyl group functionalized Schiff‐base ligands [Ru(p‐cymene)LCl] (2a‐2c) have been synthesized and characterized. All ruthenium complexes were fully characterized by 1H and 13C NMR spectra, mass spectrometry and infrared spectrometry. The molecular structure of ruthenium complex 2c was confirmed by single‐crystal X‐ray diffraction methods. Furthermore, these half‐sandwich ruthenium complexes were found to exhibit high catalytic activity for nitro compounds reduction using NaBH4 reducing agent in the presence of cetyltrimethylammonium bromide (CTAB) in water at room temperature.

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Preparation, crystal structures and properties of half-sandwich ruthenium complexes containing salicylbenzoxazole ligands

Cited by 7 publications

References 25 publications

Half-Sandwich Ruthenium Phenolate–Oxazoline Complexes: Experimental and Theoretical Studies in Catalytic Transfer Hydrogenation of Nitroarene

Half-Sandwich Ruthenium Phenolate–Oxazoline Complexes: Experimental and Theoretical Studies in Catalytic Transfer Hydrogenation of Nitroarene

Half‐sandwich Ir (III) and Rh (III) complexes as catalysts for water oxidation with double‐site

Half‐sandwich ruthenium complexes with Schiff base ligands bearing a hydroxyl group: Preparation, characterization and catalytic activities

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