Catalysts are substances that increase the reaction rate of a chemical reaction without being consumed in the process. 20737-42-2, Name is 3-Oxo-3,4-dihydropyrazine-2-carboxylic acid, SMILES is O=C(C1=NC=CNC1=O)O, belongs to Pyrazines compound. In a document, author is Sumczynski, Przemyslaw, introduce the new discover, Recommanded Product: 20737-42-2.
On the acid-base properties of pyrazine-2-thiocarboxamide and its complexes with Fe(II), Cu(II), Zn(II) and Ni(II) in polar solvents
Add-base properties of 1,4-diazine-2-thiocarboxamide (PICA) most stable conformers were studied as well as its complexes with Fe(II), Cu(II), Zn(II) and Ni(II) in water, acetonitrile, methanol and ethanol solvents. All studies were performed by means of theoretical density functional method (DFf), and the solvents were modeled as a polarizable continuum. Due to significant differences in stability Iwo groups of conformers can be distinguished. Only one group, containing amino group, shall be observed experimentally. Full four-stage protonation and two-stage deprotonation maps of PICA have been revealed. The 1:1 and 2:1 series of complexes have been found with Fe(II), Cu(II), Zn( II) and Ni(II) cations. General complexation enthalpy characteristic was found as: Delta H-29(8_Cu2+) Delta H-298(_Ni2+) >> Delta H-298(_)Cu2(+) >> Delta H-298(_Zn2+), and Delta H-298(_ethanol) > Delta H-298(_)acetonitrile > Delta H-298(_)mehtanol > Delta H-298(_water). (C) 2020 Elsevier B.V. All rights reserved.
The proportionality constant is the rate constant for the particular unimolecular reaction. the reaction rate is directly proportional to the concentration of the reactant. I hope my blog about 20737-42-2 is helpful to your research. Recommanded Product: 20737-42-2.