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Wyświetlanie 1-15 z 34
Tytuł:
Synthesis and Characterization of Cu(II), Ni(II) and Co(II) Based Schiff Base Complexes
Autorzy:
Bhalu, A.
Vilapara, K.
Maru, M.
Shah, M.
Powiązania:
https://bibliotekanauki.pl/articles/412444.pdf
Data publikacji:
2014
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
schiff base
metal complexes
Opis:
N-(3-Bromo-4-hydroxy-5-methoxybenzylidene)-4-Bromobenzenamine was synthesized. This was further used to synthesize Co(II), Ni(II) and Co(II) based metal complexes and characterized by FT-IR, Elemental analysis, ESI Mass and UV spectroscopy.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2014, 12; 51-55
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Synthesis of benzthiazole derivatives grouping with substituted azetidinone ring and its functional behaviour
Autorzy:
Kapadiy, K. M.
Namera, D. H.
Kavadia, K. M.
Khunt, R. C.
Powiązania:
https://bibliotekanauki.pl/articles/412225.pdf
Data publikacji:
2014
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Amino benzthiazole
Schiff base
Azetidinone
Opis:
A series of Schiff derivatives (5a-q) and azetidinone by way of amide linkage analogues (6a-q) containing 2-amino benzthiazole have been synthesized. Amide linkage were adapted from acid via reaction with hydrazine hydrate followed by reaction with different substituted aldehyde derived various Arylidene derivatives comprising with various donor and acceptor functional group. The structures of the new synthesized azetidinone derivatives were characterized on the basis of 1H-NMR, Mass, IR and elemental analysis data.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2014, 11, 3; 223-232
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Synthesis and characterization of some thiazolidinone derivatives possessing benzimidazole nucleus
Autorzy:
Mehta, P.
Dawedra, P.
Goswami, V.
Joshi, H. S.
Powiązania:
https://bibliotekanauki.pl/articles/412250.pdf
Data publikacji:
2014
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
4-Thiazolidinone
Benzimidazole
Schiff base
Opis:
Synthesis of new thiazolidinone derivatives possessing benzimidazole nucleus by condensation reaction of various substituted mercapto acids in presence of anhydrous ZnCl2. In our present study we have also synthesized Schiff bases of benzimidazole derivatives. All synthesized compounds were characterized by IR, 1H NMR and Mass spectroscopy.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2014, 11, 1; 1-8
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Synthesis and characterization of 2-(methylthio)-6-oxo-6H-chromeno[3,4-e]pyrazolo[1,5-a]pyrimidine-3-carbonitrile derivatives
Autorzy:
Ajudiya, Yogesh M.
Babariya, Jayesh S.
Upadhyay, J. J.
Powiązania:
https://bibliotekanauki.pl/articles/1070890.pdf
Data publikacji:
2019
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Pyrazolo pyrimidine
Schiff base
coumarine
Opis:
Some new 2-(methylthio)-6-oxo-6H-chromeno[3,4-e]pyrazolo[1,5-a]pyrimidine-3-carbonitrile derivatives Having coumarine nucleus were synthesized by novel synthetic rout from 4-chloro 3-carbaldehyde coumarine derivatives and previously prepared 5-amino-3-(methylthio)-1H-pyrazole-4-carbonitrile using methanol as a solvent and catalytic amount of glacial acetic acid. All the synthesised libraries were characterized by IR, NMR and mass spectral analysis.
Źródło:
World Scientific News; 2019, 123; 258-264
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Synthesis, characterization and antimicrobial activity of N’-benzylidene-5-bromothiophene-2-carbohydrazide derivatives
Autorzy:
Makwana, H.
Naliapara, Y. T.
Powiązania:
https://bibliotekanauki.pl/articles/411935.pdf
Data publikacji:
2014
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
2-carbohydrazide
Schiff base
antimicrobial activity
Opis:
Some new N’-benzylidene-5-bromothiophene-2-carbohydrazide derivatives possessing thiophene nucleus were synthesized and characterized by IR, NMR and mass spectral analysis. All synthesized compounds were screened for antimicrobial activity using cup plate method. All the compounds showed moderate to good antimicrobial activity and anti fungal activity.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2014, 14, 1; 99-105
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Corrosion Inhibition of Mild Steel in Nitric Acid Media by some Schiff Bases Derived from Anisalidine
Autorzy:
Saxena, N.
Kumar, S.
Sharma, M. K.
Mathur, S. P.
Powiązania:
https://bibliotekanauki.pl/articles/779278.pdf
Data publikacji:
2013
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
Schiff base
degradation
inhibitor and mild steel
Opis:
Corrosion inhibition performance of mild steel in nitric acid solution containing different concentration of anisalidine derivative Schiff bases viz. N- (4-nitro phenyl) p-anisalidine (SB1), N- (4-chloro phenyl) p-anisalidine (SB2), N- (4-phenyl) p-anisalidine (SB3), N- (4-methoxy phenyl) p-anisalidine (SB4), N- (4-hydroxy phenyl) p-anisalidine (SB5) has been investigated using mass loss, thermometric and potentiostate polarization technique. Inhibition efficiencies of Schiff bases have been evaluated at different acid strength. The inhibition efficiency was found larger than their parent amines. Inhibition efficiencies of synthesized Schiff bases increase with inhibitor concentration. Inhibition efficiency increases up to 98.32% with ansalidine derivative Schiff base.
Źródło:
Polish Journal of Chemical Technology; 2013, 15, 1; 61-67
1509-8117
1899-4741
Pojawia się w:
Polish Journal of Chemical Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Symmetrical and asymmetrical imino-naphthalimides in perovskite solar cells
Autorzy:
Korzec, Mateusz
Kotowicz, Sonia
Pająk, Agnieszka Katarzyna
Schab-Balcerzak, Ewa
Powiązania:
https://bibliotekanauki.pl/articles/2063885.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Stowarzyszenie Elektryków Polskich
Tematy:
naphthalimide
perovskite solar cell
Schiff base
imine
Opis:
In perovskite solar cells, series of symmetrical and asymmetrical imino-naphthalimides were tested as hole-transporting materials. The compounds exhibited high thermal stability at the temperature of the beginning of thermal decomposition above 300 °C. Obtained imino-naphthalimides were electrochemically active and their adequate energy levels confirm the application possibility in the perovskite solar cells. Imino-naphthalimides were absorbed with the maximum wavelength in the range from 331 nm to 411 nm and emitted light from the blue spectral region in a chloroform solution. The presented materials were tested in the perovskite solar cells devices with a construction of FTO/b-TiO2/m-TiO2/perovskite/ HTM/Au. For comparison, the reference perovskite cells were also performed (without hole-transporting materials layer). Of all the proposed materials tested as hole-transporting materials, the bis-(imino-naphthalimide) containing in core the triphenylamine structure showed a power conversion efficiency at 1.10% with a short-circuit current at 1.86 mA and an open-circuit voltage at 581 mV.
Źródło:
Opto-Electronics Review; 2021, 29, 4; 175--180
1230-3402
Pojawia się w:
Opto-Electronics Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Synthesis, spectral characterization (FT-IR and NMR) and DFT (Molecular structure, HOMO-LUMO, NLO) computational studies on some novel (E)-N-phenyl-3,5-dichloropyridin-4-amine and its derivatives
Autorzy:
Prabhakaran, N. R.
Palanivel, C.
Powiązania:
https://bibliotekanauki.pl/articles/1192697.pdf
Data publikacji:
2016
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Schiff base
DFT
HOMO-LUMO
Mulliken Charge
MEP
Opis:
A new series of Schiff bases were synthesized for the first time by the condensation of substituted aldehyde and 3,5-dichloropyridin-4-amine in ethanol (1:1). The structure of Schiff bases were experimentally characterized by using IR and 1H NMR spectroscopic methods. The structural and vibrational properties of the studied molecules were investigated theoretically by performing density functional theory (DFT) to access reliable results to the experimental values and the calculation results showed good agreement with the experimental ones. The calculated HOMO and LUMO energies showed that charge transfer occurs within the molecule. Atomic charges and molecular electrostatic potential (MEP) have been calculated at the B3LYP method and standard 6-31G(d,p) basis set starting from optimized geometry.
Źródło:
World Scientific News; 2016, 46; 244-259
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Synthesis and antimicrobial evolution of some new benzotriazole substituted 1,3,4-thiadiazoles
Autorzy:
Godhani, Dinesh R.
Mulani, Vishal B.
Mehta, Jignasu P.
Kukadiya, Nipul B.
Powiązania:
https://bibliotekanauki.pl/articles/1177753.pdf
Data publikacji:
2018
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
antimicrobial activity
benzotriazole
cytotoxicity
haemolysis
schiff base
thiadiazole
Opis:
A series of novel benzotriazole-substituted 1,3,4-thiadiazole-2(3H)-thione derivatives was synthesized by cyclization of Schiff base. The structures were recognized on the foundation of spectral tools and their purity by elemental analysis. All the compounds were preliminary evaluated for their in vitro antimicrobial activities against five bacterial strains viz [Staphylococcus aureus (MRSA; ATCC 43300), Klebsiella pneumoniae (ATCC 700603), Escherichia coli (ATCC 25922), Acinetobacter baumannii (ATCC 19606), Pseudomonas aeruginosa (ATCC 27853)] and two fungi Strains viz. [Candida albicans (ATCC 90028), Cryptococcus neoformans (ATCC 208821)]. Several compounds exhibited remarkable antimicrobial activity, out of 15 compounds, three compounds viz. 5a, 5g and 5i showed promising antifungal activities with no signs of human cells cytotoxic [HEK293: Human Embryonic Kidney cells (ATCC CRL-1573)] and haemolytic activity [Whole blood (ARCBS 5400 00150)].
Źródło:
World Scientific News; 2018, 100; 51-60
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Novel s-Triazinyl Schiff Base/Chalcone Congeners: Rational, Synthesis, Antimicrobial and Anti-TB Evaluation
Autorzy:
Lakum, H. P.
Shah, D. R.
Chikhalia, K. H.
Powiązania:
https://bibliotekanauki.pl/articles/412603.pdf
Data publikacji:
2014
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
antimicrobial
Anti-TB
s-Triazine
Schiff base
Chalcone
Opis:
The occurrence of Multi Drug Resistant (MDR) infectious microbial strains has been increased upto alarming level which affects the public health worldwide. To cure this problem, a library of s-triazinyl derivatives comprising schiff base or chalcone motif have been rationalized, synthesized and screened for their in vitro antibacterial activity against five bacterial strains (Staphylococcus aureus MTCC 96, Bacillus subtilis MTCC 441, Escherichia coli MTCC 739, Pseudomonas aeruginosa MTCC 741 and Klebsiella pneumoniae MTCC 109) and four fungal strains (Aspergillus niger MTCC 282, Aspergillus fumigates MTCC 343, Aspergillus clavatus MTCC 1323, Candida albicans MTCC 183) using broth dilution technique. All the newly synthesized scaffolds were further evaluated for their in vitro anti-TB efficacy against the tubercular strain (Mycobacterium tuberculosis H37Rv) using Lowenstein-Jensen MIC method. All the derivatives were well characterized by IR, 1H NMR, 13C NMR, elemental analysis as well as mass spectroscopy.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2014, 19, 1; 56-73
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Synthesis and Spectral Studies of Ru(II) Carbonyl Schiff Base Complexes
Autorzy:
Prabhakaran, B.
Santhi, N.
Emayavaramban, M.
Powiązania:
https://bibliotekanauki.pl/articles/412248.pdf
Data publikacji:
2013
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Schiff base
ruthenium(II) complexes
tetradentate ligands
octahedral environment
Opis:
The synthesis and characterization of hexa co-ordinated ruthenium(II) complexes of the type [Ru(CO)(B)(L)] (where B = PPh3, AsPh3, py or pip and L = dibasic tetradentate Schiff base ligand) were synthesized from the reaction of [RuHCl(CO)(B)(EPh3)2] (where E = P, B = PPh3, py or pip, E = As, B = AsPh3) with different tetradentate ligands. The ligands were derived by the condensation of 5-chloro-4-methyl-2-hydroxy benzophenone with ethylenediamine, propylenediamine and o-phenylene-diamine in 1:1 molar ratio. All the compounds have been characterized by elemental analysis and spectral (FT-IR, UV-VIS and 1H-NMR) methods. An octahedral environment around Ru(II) ion has been tentatively proposed for all the complexes.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2013, 3; 53-66
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mn₂O₃ Nanoparticles Synthesized from Thermal Decomposition of Manganese(II) Schiff Base Complexes
Autorzy:
Khalaji, A.
Ghorbani, M.
Powiązania:
https://bibliotekanauki.pl/articles/1029800.pdf
Data publikacji:
2018-01
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
Mn₂O₃ nanoparticles
manganese(II)
Schiff base
thermal decomposition
Opis:
The Mn₂O₃ nanoparticles have been prepared using solid state thermal decomposition of MnL¹ and MnL², L¹=N,N'-bis(2-hydroxy-4-methoxybenzophenone)-1,3-propanediamine and L²=N,N'-bis(2-hydroxy-4-methoxybenzophenone)-1,2-cyclohexanediamine, at 500°C for 3 h and characterized by the Fourier transform infrared spectroscopy, X-ray powder diffraction and scanning electron microscopy. The Fourier transform infrared spectroscopy and X-ray powder diffraction confirm that the formed product at 500°C is Mn₂O₃. The MnL¹ and MnL² complexes were prepared from the one-pot reaction of MnCl₂·H₂O, diamine and 2-hydroxy-4-methoxybenzophenone and characterized by elemental analyses, the Fourier transform infrared spectroscopy and thermogravimetry.
Źródło:
Acta Physica Polonica A; 2018, 133, 1; 7-9
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Synthesis, Characterization and DFT Calculations of 4-((2-Hydroxyethyl)imino)naphthalen-1(4H)-One and its Cu(II) Complex
Autorzy:
Gorgulu, G.
Dede, B.
Powiązania:
https://bibliotekanauki.pl/articles/1029785.pdf
Data publikacji:
2018-02
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
Schiff base
quinone
metal complex
spectroscopy
copper(II)
DFT
Opis:
We have reported herein the synthesis of a novel quinone derivative ligand containing the Schiff base and its Cu(II) complex starting from 1,4-naphthoquinone. Synthesized compounds were characterized using the Fourier transform infrared, UV-Vis, elemental analysis, inductively coupled plasma optical emission spectrometry, molar conductivity, and magnetic susceptibility measurements. The free ligand was also characterized by ¹H- and ¹³C-NMR spectra. Elemental analyses, stoichiometric and spectroscopic data indicated that the metal:ligand ratio is 1:2 and octahedral structure is proposed for the metal complex of the Schiff base ligand. Computational quantum calculations were also performed using DFT/B3LYP level of theory with 6-311++G(d,p) basis set for the synthesized ligand. It was found that the experimental and theoretical spectroscopic data were consistent.
Źródło:
Acta Physica Polonica A; 2018, 133, 2; 239-243
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Spectroscopic Properties and Quantum Chemical Calculations of Novel Diimine Molecules and their Mononuclear Cu(II) Complexes
Autorzy:
Dede, B.
Gorgulu, G.
Powiązania:
https://bibliotekanauki.pl/articles/1029792.pdf
Data publikacji:
2018-02
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
Schiff base
diimine
metal complex
spectroscopy
copper(II)
DFT
Opis:
Two novel Schiff base ligands, 2,2'-((pentane-2,4-diylidene)bis(azanylylidene))bis(4-chlorophenol) and 2,2'-((pentane-2,4-diylidene)bis(azanylylidene))bis(4-methylphenol) were prepared by condensation reaction of acetylacetone with 2-amino-4-chlorophenol and 2-amino-4-methylphenol, respectively. Mononuclear Cu(II) complex of each ligand was also synthesized. These compounds were characterized by elemental analyses, inductively coupled plasma optical emission spectrometry, the Fourier transform infrared spectra, UV-Vis, molar conductivity, and magnetic susceptibility measurements. The ligands have been further characterized by ¹H- and ¹³C-NMR. The results suggest that the metal complexes of the ligands have a metal:ligand ratio of 1:1 and the Cu(II) ions are coordinated by the phenolic oxygen atoms and imine nitrogen atoms of the ligands. Moreover, the quantum chemical calculations of the compounds have been performed using the density functional theory. It has been found that the calculated spectroscopic values are in a good agreement with experimental data.
Źródło:
Acta Physica Polonica A; 2018, 133, 2; 256-262
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Synthesis and characterization of some new Schiff bases of 2-oxonaphtho[2,1-b][1,4]oxazine
Autorzy:
Chovatiya, P.
Mehta, C.
Senjani, H.
Shah, A.
Joshi, H. S.
Powiązania:
https://bibliotekanauki.pl/articles/411737.pdf
Data publikacji:
2014
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
2-Oxonaphtho[2,1-b][1,4]oxazine
Schiff base
Opis:
The literature review reveal that [1,4]-oxazine derivatives represent one of the most active classes of compounds possessing wide spectrum of biodynamic activities and use as potent therapeutic agents. In the present work, a series of Schiff base of 2-(2,3-dihydro-2-oxonaphtho[2,1-b][1,4]oxazin-1-yl)acetohydrazide, 5a-5j has been synthesized using 1-aminonaphthalen-2-ol. Various aromatic aldehyde were react with carbohydrazide 4 in the presence of acid to produce the 2-oxonaphtho[2,1-b][1,4]oxazin Schiff base derivatives with good yields. All synthesized compounds were characterized by IR, NMR and Mass spectrometry analysis.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2014, 12; 26-30
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 34

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