Cyclometalated Ruthenium(II) Complexes as Highly Active Transfer Hydrogenation Catalysts.

Baratta, Walter; Ros, Paolo Da; Zotto, Alessandro Del; Sechi, Alessandra; Zangrando, Ennio; Rigo, Pierluigi

doi:10.1002/chin.200442048

Cited by 2 publications

(3 citation statements)

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“…Red 120), thiophene, and methyl ethyl ketone give practically no signal (at least at the concentration of about 10 −3 mol·L −1 ), but all bring to lower responses of the fuel cell to ethanol, if the latter was also present in the cell. In conclusion, a comparison with reference analytical data, found both by using the conventional amperometric biosensor and official nominal values, confirmed that additives contained in denatured ethanol give interferences, lowering the response of the fuel cell to ethanol; this is probably because these components, especially denatonium, or Red Dye 120, can complicate the catalyst (ruthenium ions), as reported in the literature for compound of the same type [ 49 ]. Other successive applications have been performed on different kind of complex-relevant samples, by measuring the SC again, although in this case using the enzymatic device.…”

Section: Resultssupporting

confidence: 75%

Direct Methanol (or Ethanol) Fuel Cell as Enzymatic or Non-Enzymatic Device, Used to Check Ethanol in Several Pharmaceutical and Forensic Samples

Tomassetti

Angeloni

Marchiandi

et al. 2018

Sensors

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It was already demonstrated by our research group that a direct catalytic methanol (or ethanol) fuel cell (DMFC) device can be used also for analytical purposes, such as the determination of ethanol content in beverages. In the present research we extended the application to the analysis of several ethanol-based pharmaceutical products, i.e., pharmaceutical tinctures (dyes) and disinfectants. In recent work we have also shown that the use of alcohol dehydrogenase enzyme as a component of the anodic section of a direct catalytic methanol (or ethanol) fuel cell significantly improves the performance of a simple DMFC device, making it more suitable to measure ethanol (or methanol) in real samples by this cell. At the same time, we have also shown that DMFC can respond to certain organic compounds that are more complex than methanol and ethanol and having R(R’)CH-OH group in the molecule. Firstly, pharmaceutical dyes were analyzed for their ethanol content using the simple catalytic DMFC device, with good accuracy and precision. The results are illustrated in the present paper. Additionally, a detailed investigation carried out on commercial denatured alcoholic samples evidenced several interferences due to the contained additives. Secondly, we hypothesized that by using the enzymatic fuel cell it would be possible to improve the determination, for instance, of certain antibiotics, such as imipenem, or else carry out determinations of ethanol content in saliva and serum (simulating forensic tests, correlated to drivers “breath test”); even if this has already been hypothesized in previous papers, the present study is the first to perform them experimentally, obtaining satisfactory results. In practice, all of the goals which we proposed were reached, confirming the remarkable opportunities of the enzymatic (or non-enzymatic) DMFC device.

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Section: Resultssupporting

confidence: 75%

Direct Methanol (or Ethanol) Fuel Cell as Enzymatic or Non-Enzymatic Device, Used to Check Ethanol in Several Pharmaceutical and Forensic Samples

Tomassetti

Angeloni

Marchiandi

et al. 2018

Sensors

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“…Ru, Ir, and Rh complexes containing bi- or multidentate ligands in the forms of [PN], [NPN], , [NPO], , [NCN], [NNN], − [PNP], − [PCP], , [CNN], − [NNNP], [PNNP], − [SNNS], [PPPC], and [ONNO] backbone fragments have been extensively studied in catalytic TH due to their easy manipulations and high reactivity . Among these units, phosphorus–nitrogen containing ligands have been particularly used to assist Ru, Ir, and Rh metals in TH where it is necessary for part of a ligand to dissociate to allow an organic fragment to coordinate and undergo transformations.…”

Section: Introductionmentioning

confidence: 99%

“…9,102−107 Mixed P,N-chelate ligands have attracted considerable attention in both coordination chemistry and catalysis, due to their unusual electronic properties and pronounced hemilabile character resulting from the presence of two very different binding sites. 108 In 2003, a half-sandwich Ru, Ir, and Rh complexes containing bi-or multidentate ligands in the forms of [PN], 134 [NPN], 135,136 [NPO], 137,138 [NCN], 139 [NNN], 140−146 [PNP], 147−150 [PCP], 151,152 [CNN], 153−156 [NNNP], 157 [PNNP], 158−165 [SNNS], 166 [PPPC], 167 and [ONNO] 168 backbone fragments have been extensively studied in catalytic TH due to their easy manipulations and high reactivity. 169 Among these units, phosphorus−nitrogen containing ligands have been particularly used to assist Ru, Ir, and Rh metals in TH where it is necessary for part of a ligand to dissociate to allow an organic fragment to coordinate and undergo transformations.…”

Section: Introductionmentioning

confidence: 99%