Chemo-enzymatic cascade processes are invaluable due to their ability to rapidly construct high-value products from available feedstock chemicals in a one-pot relay manner. In an article, author is Ismayilov, Rayyat Huseyn, once mentioned the application of 99-09-2, Name is 3-Nitroaniline, molecular formula is C6H6N2O2, molecular weight is 138.124, MDL number is MFCD00007782, category is naphthyridines. Now introduce a scientific discovery about this category, COA of Formula: C6H6N2O2.
Double-stranded helicates of Ni(II), Co(II), Fe(II) and Zn(II) with oligo-alpha-naphthyridylamino ligand: Synthesis, structure and properties
By using tetranaphthyridyl-triamine ligand, N-2-(2-(1,8-naphthyridin-7-ylamino)-1,8-naphthyridin-7-yl)-N-7-(1,8-naphthyridin-2-yl)-1,8-naphthyridine-2,7-diamine (H(3)tentra), double-stranded dinuclear helical compounds [M-2(H(3)tentra)(2)(ClO4)(4)] [M = Ni-II (1), Co-II (2), Fe-II (3), Zn-II (4)] were synthesized and structurally characterized. The single X-ray crystal structure of iron(II) complex showed that both of H(3)tentra ligands wrap around the metal-metal axis giving rise to a double-stranded dinuclear helical compound with Fe-Fe separation of ca. 5.326 angstrom. Each ligand uses two nitrogen atoms from two different napthyridine rings, to coordinate one metal centre (Fe or Fe(A)) and therefore, the geometry about the metal ions was described as distorted tetrahedral, with both ligands acting as bisbidentate N4 donors. This distortion is shown by the angles between nitrogen and iron atoms, which range from 80.45(15) to 143.32(14)degrees. Distorted tetrahedral environment was also proposed for the other complexes on the basis of the magnetic measurements and X-ray results. Strong pi-pi interactions were observed for all synthesized double stranded helicates of H(3)tentra ligand. The measured chi T-M values at 300 K for complexes 2 and 3 found larger than the expected values for two high-spin Co(II) with S = 3/2 and for Fe(II) ions with S = 2 and g = 2, which attributed to the unquenched orbital coupling. (C) 2018 Elsevier Ltd. All rights reserved.
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Reference:
1,8-Naphthyridine – Wikipedia,
,1,8-Naphthyridine | C8H6N2 – PubChem