cis-Bis(O-methyldithiocarbonato-κ2S,S′)bis(triphenylphosphane-κP)ruthenium(II)

Valerio-Cárdenas, Cintya; Hernández‐Ortega, Simón; Reyes-Martínez, Reyna; Morales‐Morales, David

doi:10.1107/s1600536813016735

Cited by 2 publications

(1 citation statement)

References 9 publications

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“…The two bite angles of the bidentate chelate ligands are nearly the same: 78.33(1)° for O1–Ru1–N1 and 79.12(1)° for O2–Ru1–N2. The Ru–P1 and Ru–P2 distances are similar (2.3506(6) and 2.3505(6) Å, respectively) and fall within the reported range for ruthenium–phosphine complexes . The Ru–N and Ru–O bond distances (Table ) are meaningfully longer than those of previously reported structures …”

Section: Resultssupporting

confidence: 80%

Ruthenium(II) complexes derived from 2‐phenylthiazoline‐4‐carboxylic acid: structure and catalytic activity for transfer hydrogenation reaction

Denizalti¹,

Şen

Gökçe

et al. 2016

Applied Organom Chemis

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Piano‐stool ([(p‐cymene)Ru(thz)Cl], 2) and six‐coordinated ([Ru(thz)2(PPh3)2], 3) ruthenium complexes derived from 2‐phenylthiazoline‐4‐carboxylic acid (Hthz, 1) were synthesized for the first time, and fully characterized using conventional methods. Also, the molecular structure of complex 3 was determined using X‐ray analysis. These complexes were evaluated as catalysts for transfer hydrogenation of carbonyl compounds in the presence of isopropyl alcohol and KOtBu. Complex 2 was found to be more active than 3 in transfer hydrogenation. Copyright © 2016 John Wiley & Sons, Ltd.

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Section: Resultssupporting

confidence: 80%

Ruthenium(II) complexes derived from 2‐phenylthiazoline‐4‐carboxylic acid: structure and catalytic activity for transfer hydrogenation reaction

Denizalti¹,

Şen

Gökçe

et al. 2016

Applied Organom Chemis

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Synthesis, characterization, and catalytic evaluation of ruthenium–diphosphine complexes bearing xanthate ligands

et al. 2018

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The reaction of [RuCl2(p-cymene)]2 with potassium O-ethylxanthate and a set of nine representative Ph2P-X-PPh2 bidentate phosphines (dppm, dppe, dppp, dppb, dpppe, dppen, dppbz, dppf, and DPEphos) afforded monometallic [Ru(S2COEt)2(diphos)] chelates 1-9 in 62-96% yield. All the products were fully characterized by using various analytical techniques and their molecular structures were determined by X-ray crystallography. They featured a highly distorted octahedral geometry with a S-Ru-S bite angle close to 72° and P-Ru-P angles ranging between 73° and 103°. Bond lengths and IR stretching frequencies recorded for the anionic xanthate ligands strongly suggested a significant contribution of the EtO+[double bond, length as m-dash]CS22- resonance form. 1H NMR and XRD analyses showed that the methylene protons of the ethyl groups were diastereotopic due to a strong locking of their conformation by a neighboring phenyl ring. On cyclic voltammetry, quasi-reversible waves were observed for the Ru2+/Ru3+ redox couples with E1/2 values ranging between 0.65 and 0.80 V vs. Ag/AgCl. The activity of chelates 1-9 was probed in three catalytic processes, viz., the synthesis of vinyl esters from benzoic acid and 1-hexyne, the cyclopropanation of styrene with ethyl diazoacetate, and the atom transfer radical addition of carbon tetrachloride and methyl methacrylate. In the first case, 31P NMR analysis of the reaction mixtures showed that the starting complexes remained mostly unaltered despite the harsh thermal treatment that was applied to them. In the second case, monitoring the rate of nitrogen evolution revealed that all the catalysts under investigation behaved similarly and were rather slow initiators. In the third case, [Ru(S2COEt)2(dppm)] was singled out as a very active and selective catalyst already at 140 °C, whereas most of the other complexes resisted degradation up to 160 °C and were only moderately active. Altogether, these results were in line with the high stability displayed by [Ru(S2COEt)2(diphos)] chelates 1-9.

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cis-Bis(O-methyldithiocarbonato-κ²S,S′)bis(triphenylphosphane-κP)ruthenium(II)

Cited by 2 publications

References 9 publications

Ruthenium(II) complexes derived from 2‐phenylthiazoline‐4‐carboxylic acid: structure and catalytic activity for transfer hydrogenation reaction

Ruthenium(II) complexes derived from 2‐phenylthiazoline‐4‐carboxylic acid: structure and catalytic activity for transfer hydrogenation reaction

Synthesis, characterization, and catalytic evaluation of ruthenium–diphosphine complexes bearing xanthate ligands

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