One of the major reasons for studying chemical kinetics is to use measurements of the macroscopic properties of a system, such as the rate of change in the concentration of reactants or products with time. 7521-41-7, Name is 2-Aminonicotinaldehyde, formurla is C6H6N2O. In a document, author is McKee, Vickie, introducing its new discovery. HPLC of Formula: C6H6N2O.
Manganese(II) complexes derived from acyclic ligands having flexibie alcohol arms: structural chracterization and SOD and catalase mimetic studies
In this work, a series of seven Mn-II complexes of noncyclic flexible ligands derived from 2,6-diformylpyridine and ethanolamine or alkyl-substituted ethanolamines were prepared and characterized, six structurally by single-crystal X-ray diffraction studies. The complexes are dichlorido{2,2′-[pyridine-2,6-diyl)- bis (nitrilomethanylylidene)] diethanol}manganese(II) [MnCl2(C11H15N3O2)] or [MnCl2(L1)], (2), bis{mu -2,2′-[(pyridine-2,6-diyl)bis (nitrilomethanylylidene)] di-ethanol}bis[dithiocyanatomanganese(II)], [Mn-2(NCS)(4)(C11H15N3O2)(2)] or [Mn-2-(NCS)(4)(L1)(2)], (3), chlorido{1,1′(pyridine-2,6-diyl)bis(nitrilomethanylylidene)]-bis(propan-2-ol)}manganese (II) chloride monohydrate, [MnCl(C13H19N3O2)-(H2O)]Cl center dot H2O or [MnCl(L2)(H2O)]Cl center dot H2O, (4), {1,1′-[(pyridine-2,6-diyl)bis(nitrilomethanylylidene)]bis(propan-2-ol)}dithiocyanatomanganese(II), [Mn-(NCS)(2)(C13H19N3O2)] or [Mn(NCS)(2)(L2)], (5), aquadichlorido{2,2′ -dimethyl-2,2′-[(pyridine-2,6-diyl)bis(nitrilomethanylylidene)]bis(propan-1-ol)Imanganese(II) 0.3-hydrate, [MnCl2(C15H23N3O2)(H2O)]center dot-0.3H(2)O or [MnCl2(L3)(H2O)]center dot -0.3H(2)O, (6), (climethylformamide){2,2′-dimethyl-2,2′[(pyridine-2,6-diyl)bis(nitrilomethanylylidene)]bis(propan-1-ol)}dithiocyanatomanganese(H), [Mn(NCS)(2)(C15H23N3O2)(C3H7NO)] or [Mn(NCS)(2)(L3)(DMF)], (7), and (dimethylformamide)-{2,2[(pyridine-2,6-diyl)bis(nitrilomethanylylidene)]bis(butan-l-ol)}dithiocyan-atomanganese(II) dimethylformamide monosolvate, [Mn(NCS)(2)(C15H23N3O2)-(C3H7NO)]center dot C3H7NO or [Mn(NCS)(2) (L4)(DMF)]center dot DMF, (8). The crystal structure of ligand L1 is also reported, but that of (5) is not. All four ligands (L1-L4) have five potential donor atoms in an N3O2 donor set, i.e. three N (pyridine/diimine donors) and two alcohol O atoms, to coordinate the Mn-II centre. The N3O2 donor set coordinates to the metal centre in a pentagonal planar arrangement; seven-coordinated M-II complexes were obtained via coordination of two auxiliary ligands (anions or water molecules) at the axial positions. However, in some cases, the alcohol O-atom donors remain uncoordinated, resulting in five- or six-coordinated M-II complexes. The structurally characterized complexes were tested for their catalytic scavenging of superoxide and peroxide. The results indicated that the complexes with coordinated exogenous water or chloride ligands showed higher SOD activity than those with exogenous thiocyanate ligands.
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Reference:
Pyridine – Wikipedia,
,Pyridine | C5H5N – PubChem