Wszystkie pola: co-synthesis - Katalog OPAC zbiorów

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Tytuł:: Synthesis, characterization, biological activity of Schiff bases derived from 2-bromo-4-methyl aniline and its potentiometric studies with Cu(II), Co(II) and Ni(II) ions
Autorzy:: Upadhyay, Surbhi V.
Zala, Raksha V.
Bhatt, Keyur D.
Powiązania:: https://bibliotekanauki.pl/articles/1030767.pdf
Data publikacji:: 2020
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: 2-bromo-4-methyl aniline
Antimicrobial activity
Irving-Rossotti
Potentiometric studies
Schiff base
Stability constant
Opis:: Schiff bases namely, 2-bromo-4-methyl-N-(2-nitrobenzylidene)aniline; 2-bromo-4-methyl-N-(2,4,5-trimethoxybenzylidene)aniline; 2-bromo-N-(4-methoxybenzylidene)-4-methylaniline and N-((1H-indol-3-yl)methylene-2-bromo-4-methylaniline have been synthesized and characterized by elemental analysis, FT-IR, Mass and 1H-NMR spectroscopy. Schiff bases have been screened for Antimicrobial activity against bacteria and fungi by using MIC determination. Binary complexes of Co(II), Ni(II) and Cu(II) with Schiff bases in solution have been studied potentiometrically in 60:40 % (V/V) 1,4-dioxane-water system at constant temperature 27 ±0.5 ºC and at an ionic strength of 0.1 M KNO3. The order of stability constant of formed binary complexes in solution was examined.
Źródło:: World Scientific News; 2020, 145; 1-15
2392-2192
Pojawia się w:: World Scientific News
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Cu(II), Co(II), Ni(II), Mn(II) and Zn(II) Schiff base complexes of 3-hydroxy-4-[N-(2-hydroxynaphthylidene)-amino]-naphthalene-1-sulfonic acid: Synthesis, Spectroscopic, thermal, and antimicrobial studies
Autorzy:: Bakare, Safyah B.
Powiązania:: https://bibliotekanauki.pl/articles/778830.pdf
Data publikacji:: 2019
Wydawca:: Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:: Schiff base
hydroxynaphthalene-1-sulfonic acid
hydroxy-1-naphthaldehyde
transition metal ions
morphology
antimicrobial activity
Opis:: Five divalent transition metals Cu(II), Co(II), Ni(II), Mn(II) and Zn(II) complexes have been synthesized using 3-hydroxy-4-[N-(2-hydroxynaphthylidene)-amino]-naphthalene-1-sulfonic acid (H₃L) Schiff base as a ligand derived from the condensation reaction between 4-amino-3-hydroxynaphthalene-1-sulfonic acid and 2-hydroxy-1-naphthalde-hyde. The synthesized complexes were characterized using microanalytical, conductivity, FTIR, electronic, magnetic, ESR, thermal, and SEM studies. The microanalytical values revealed that the metal-to-ligand stoichiometry is 1:1 with molecular formula [M²⁺(NaL)(H₂O)x].nH₂O (where x = 3 for all metal ions except of Zn(II) equal x = 1; n = 4, 10, 7, 4, and 6 for Cu(II), Co(II), Ni(II), Mn(II) and Zn(II), respectively). The molar conductivity result indicates that all these complexes are neutral in nature with non-electrolytic behavior. Dependently on the magnetic, electronic, and ESR spectral data, octahedral geometry is proposed for all the complexes except to zinc(II) complex is tetrahedral. Thermal assignments of the synthesized complexes indicates the coordinated and lattice water molecules are present in the complexes. SEM micrographs of the synthesized complexes have a different surface morphologies. The antimicrobial activity data show that metal complexes are more potent than the parent ligand.
Źródło:: Polish Journal of Chemical Technology; 2019, 21, 3; 26-34
1509-8117
1899-4741
Pojawia się w:: Polish Journal of Chemical Technology
Dostawca treści:: Biblioteka Nauki

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