Electric Literature of 100-54-9, Enzymes are biological catalysts that produce large increases in reaction rates and tend to be specific for certain reactants and products. 100-54-9, Name is Nicotinonitrile, SMILES is N#CC1=CN=CC=C1, belongs to pyridine-derivatives compound. In a article, author is Ansari, Anees Ahmad, introduce new discover of the category.
Synthesis and 4f 4f absorption studies of tris(acetylacetonato) praseodymium(III) and holmium(III) complexes with imidazole and pyrazole in non-aqueous solvents. Structure elucidation by Sparkle / PM7
The complexes [Pr(acac)(3)(im)2], [Pr(acac)(3)(pz)], [Ho(acac)(3)(im)] and [Ho(acac)(3)(pz)] (acac is the anion of acetylacetone, im is imidazole and pz is pyrazole) were synthesized and characterized by elemental and thermal analyses, IR and NMR spectroscopy. The ground state molecular structures were obtained using semi-empirical Sparkle/PM7 method. The optimized structures reflect the effect of lanthanide contraction along the lanthanide series as the average Ho-O and Ho-N distances are found shorter than the average Pr-O and Pr-N distances. The size of the lanthanide also affects the overall geometry of the complex. It can be seen in the homologous [Pr(acac)(3)(pz)] and [Ho(acac)(3)(pz)] complexes with pentagonal bipyramidal (D-5h) and capped trigonal prism (C-2v) geometries, respectively. The 4f 4f absorption spectra of the complexes recorded in different non-aqueous solvents are presented and analyzed. The oscillator strength of P-3(2) -> H-3(4), D-1(2) -> H-3(4) transitions in the case of Pr(III) complexes and (5)G(6) <- I-5(8) transition in the case of Ho(III) complexes, show remarkable changes upon a change in the ancillary ligand and/or solvent. The band shape of P-3(2) <- H-3(4) transition of both the Pr(III) complexes in pyridine show remarkable change and suggests influence of pyridine in changing the inner-coordination sphere of the complexes. The band shape of the hypersensitive (5)G(6) <- I-5(8) transition of the Ho(III) complexes show appreciable change on changing the ligand/solvent. The paramagnetic shift obtained for these complexes are predominantly dipolar in nature. (C) 2019 Elsevier B.V. All rights reserved. Electric Literature of 100-54-9, Because enzymes can increase reaction rates by enormous factors and tend to be very specific, typically producing only a single product in quantitative yield, they are the focus of active research.you can also check out more blogs about 100-54-9.
Reference:
Pyridine – Wikipedia,
,Pyridine | C5H5N – PubChem