Category: 1762-41-0

Adamczak, Ashley K.; Howard, William A.; Wheeler, Kraig A. published the artcile< Enhanced nucleophilic substitution with coordinated 4,4'-dichloro-2,2'-bipyridine: X-ray structures of 4,4'-dichloro-2,2'-bipyridine (Bipy-Cl2), cis-dichlorobis(4,4'-dichloro-2,2'-bipyridine)rhodium(III) hexafluorophosphate [Rh](PF6), and tris(4,4'-dichloro-2,2'-bipyridine)ruthenium(II) hexafluorophosphate [Ru](PF6)2>, HPLC of Formula: 1762-41-0, the main research area is ruthenium rhodium chlorobipyridine complex preparation crystal structure; optimized mol structure ruthenium rhodium chlorobipyridine complex.

The chem. reactivity of 4,4′-dichloro-2,2′-bipyridine (bipy-Cl2) changes profoundly upon coordination to a [Ru]2+ center. When not coordinated to [Ru]2+, bipy-Cl2 is relatively unreactive toward nucleophiles; but when coordinated to [Ru]2+, the chlorine atoms become susceptible to nucleophilic displacement. The x-ray structures of bipy-Cl2, cis-dichlorobis (4,4′-dichloro-2,2′-bipyridine)rhodium(III) hexafluorophosphate [Rh](PF6), and tris(4,4′-dichloro-2,2′-bipyridine)ruthenium(II) hexafluorophosphate [Ru](PF6)2 reveal that the carbon-chlorine bond lengths do not change substantially upon coordination to the rhodium or ruthenium centers – implying that the carbon-chlorine bond strengths also do not change substantially. B3LYP calculations reveal that the standard enthalpy of activation (ΔH°≠) for the nucleophilic substitution of the chlorine atom in [Ru (bipy)2{bipy-Cl}]2+(bipy = 2,2′-bipyridine; bipy-Cl = 4-chloro-2,2′-bipyridine) by OCH3- is 46.7 kJ mol-1, while the calculated ΔH°≠ value for the nucleophilic substitution of the chlorine atom in free bipy-Cl by OCH3- is 72.8 kJ mol-1. However, the B3LYP calculations of the ΔH°≠ values for the nucleophilic displacement of the chlorine atom in the cis and trans isomers of [Ru (bipy) (2,2′-biphenyl){bipy-Cl}], which are neutral complexes, are 76.0 and 73.8 kJ mol-1 resp. – comparable to that for the reaction involving free bipy-Cl. Hence, the calculations suggest that the overall pos. charge of the complex is primarily responsible for lowering the activation barrier to nucleophilic substitution in coordinated chloro-bipyridines.

Journal of Molecular Structure published new progress about Crystal structure. 1762-41-0 belongs to class pyridine-derivatives, and the molecular formula is C10H6Cl2N2, HPLC of Formula: 1762-41-0.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Alsaoub, Sabine; Conzuelo, Felipe; Gounel, Sebastien; Mano, Nicolas; Schuhmann, Wolfgang; Ruff, Adrian published the artcile< Introducing Pseudocapacitive Bioelectrodes into a Biofuel Cell/Biosupercapacitor Hybrid Device for Optimized Open Circuit Voltage>, Product Details of C10H6Cl2N2, the main research area is bioelectrode biofuel cell biosupercapacitor open circuit voltage.

We report the fabrication of a polymer/enzyme-based biosupercapacitor (BSC)/biofuel cell (BFC) hybrid device with an optimized cell voltage that can be switched on demand from energy conversion to energy storage mode. The redox polymer matrixes used for the immobilization of the biocatalyst at the bioanode and biocathode act simultaneously as electron relays between the integrated redox enzymes and the electrode surface (BFC) and as pseudocapacitive charge storing elements (BSC). Moreover, owing to the self-charging effect based on the continuously proceeding enzymic reaction, a Nernstian shift in the pseudocapacitive elements, i.e., in the redox polymers, at the individual bioelectrodes leads to a maximized open circuit voltage of the device in both operating modes. Comparison with a conventional fuel cell design, i.e., using redox mediators with redox potentials that are close to the potentials of the used redox proteins, indicates that the novel hybrid device shows a similar voltage output. Moreover, our results demonstrate that the conventional design criteria commonly used for the development of redox polymers for the use in biofuel cells have to be extended by considering the effect of a Nernstian shift towards the potentials of the used biocatalysts in those pseudocapacitive elements.

ChemElectroChem published new progress about Acinetobacter calcoaceticus. 1762-41-0 belongs to class pyridine-derivatives, and the molecular formula is C10H6Cl2N2, Product Details of C10H6Cl2N2.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem