Tin(IV) Derivatives of Schiff Bases Derived from Benzaldehyde and Aminoalcohols

1975 ◽  
Vol 30 (1-2) ◽  
pp. 46-49 ◽  
Author(s):  
O. P. Singh ◽  
R. N. Prasad ◽  
J. P. Tandon
Keyword(s):  
Schiff Base ◽  
Ir Spectra ◽  
General Formula ◽  
Schiff Bases ◽  
Elemental Analysis ◽  
Conductivity Measurements ◽  
Stoichiometric Ratios ◽  
Derivatives Of

Reactions of tin(IV) chloride with monofunctional bidentate Schiff bases, having the general formula in different stoichiometric ratios have yielded SnCl4 • SBH and SnCl4(SBH)2 type of products (where SBH is the monofunctional bidentate Schiff base). The resulting derivatives have been characterized on the basis of elemental analysis and IR spectra. Conductivity measurements show them to be nonelectrolytes.

Aluminium(III) Derivatives of Monofunctional Bidentate Schiff Bases

1973 ◽  
Vol 28 (3-4) ◽  
pp. 153-157 ◽  
Author(s):  
R. N. Prasad ◽  
J. P. Tandon
Keyword(s):  
Schiff Base ◽  
Ir Spectra ◽  
General Formula ◽  
Schiff Bases ◽  
Molecular Association ◽  
Molecular Weights ◽  
Schiff Base Derivatives ◽  
Stoichiometric Ratios ◽  
Derivatives Of

Reactions of aluminium iso-propoxide with monofunctional bidentate Schiff bases having the general formula 2-HOC10H6CH:NR (where R = C2H5, n C3H7, iso-C3H7, n-C4H9, iso-C4H9, sec-C4H9, tert-C4H9 and C6H5) in different stoichiometric ratios have yielded Al(OPri)2(SB), Al(OPri)(SB)2 and Al(SB)3 type of products (where SB is the anion of the corresponding Schiff base, SBH). The ebullioscopic determination of molecular weights shows that the di-iso-propoxy mono- Schiff base derivatives are dimeric; the tris- Schiff base derivatives are monomeric and for the mono-iso-propoxy bis- Schiff base derivatives, molecular association is ~1.4. The IR spectra of a few representative derivatives have been recorded and possible structures indicated.

scholarly journals Synthesis, Characterization and Thermal Studies of Fe(II), Co(II), Ni(II) and Cu(II) Complexes with bis-(4-benzylidenamino-phenyl)-methane Schiff base ligand

2021 ◽  
Vol 2063 (1) ◽  
pp. 012004
Author(s):  
Atared F. Hassan ◽  
Hiba H. Sabah ◽  
Afaq A. Turki
Keyword(s):  
Schiff Base ◽  
Metal Ions ◽  
General Formula ◽  
Elemental Analysis ◽  
Schiff Base Ligand ◽  
Thermal Studies ◽  
Molar Conductivity ◽  
Conductivity Measurements ◽  
Infra Red ◽  
Thermal Stable

Abstract A new series of Co(II), Fe(II), Cu(II) and Ni(II) complexes of Bis–(4-benzylidenamino-phenyl)-methane (L) have been prepared and characterized. The complexes conform to general formula [CoL(H2O)3] Cl2, [FeL(H2O)5]SO4.2H2O, [CuL(H2O)5] NO3 and [NiL(H2O)3Cl2], Infra red spectra and elemental analysis reveal uni-dentate coordination of Schiff base to metal ions. Molar conductivity measurements show that complexes (I, III) behave as 2:1 electrolyte while complex (II) behave as 1:1 electrolyte. The thermal studies for complexes shows that the complexes are thermal stable.

scholarly journals Synthesis, Characterization and Antimicrobial Properties of Schiff Bases Derived from Condensation of 8-Formyl-7-hydroxy-4-methylcoumarin and Substituted Triazole Derivatives

2009 ◽  
Vol 6 (s1) ◽  
pp. S239-S246 ◽  
Author(s):  
Kumar Sanjeev S. Lamani ◽  
Oblennavar Kotresh ◽  
Mohammed Shafi A. Phaniband ◽  
Jagannath C. Kadakol
Keyword(s):  
Schiff Base ◽  
Schiff Bases ◽  
Elemental Analysis ◽  
Mass Spectra ◽  
Biological Activities ◽  
Antimicrobial Properties ◽  
Biologically Active ◽  
Amino Group ◽  
H Nmr ◽  
Derivatives Of

Two biologically active classes of compounds coumarins and triazoles were employed to form the Schiff bases. The synthesized Schiff baseviz., 3-aryl-[(1-isocyano-4-methyl-7-hydroxycoumarin)]-5-methyl-1,3,4-triazoline-2-one and its substituents were obtained by the condensation of amino group of mono and disubstituted derivatives of 3-methyl-5-oxo-1,2, 4-triazoles with 8-formyl-7-hydroxy-4-methylcoumarin in alcohol. The characterization were studied by elemental analysis, IR,1H NMR and mass spectra. The biological activities of the compounds were assayed against two bacterial via,B. subtilis, E.coliand two fungal strainsA. niger, C.albican. The results indicate that the present compounds may serve as better fungicides when compared to bactericides. The synthesized compounds have turned to be wonder compounds possessing antimicrobial properties.

Biological Activity Studies on a Copper(II) Complex with Taurine Schiff Base

2014 ◽  
Vol 912-914 ◽  
pp. 57-60
Author(s):  
Mei Li ◽  
Guo Ping Yang ◽  
Hong Liang
Keyword(s):  
Biological Activity ◽  
Schiff Base ◽  
Ir Spectra ◽  
Hepg2 Cell ◽  
Cell Lines ◽  
Elemental Analysis ◽  
Ic50 Values ◽  
New Material ◽  
G2 Phase ◽  
Hepg2 Cell Lines

A new material of copper(II) complex (complex 1) with taurine Schiff base has been synthesized and characterized by elemental analysis, ESI-MS and IR spectra. 1 was tested against HepG2 cell lines with IC50 values of 12.89 μM. With the concentrations of 1 increasing, the population of apoptosis was 1.28% for 0 μM, 24.4% for 10 μM and 47.9% for 20μM, and the population of G2 phase was 19.2% for 0 μM, 34.4% for 10 μM and 42.9% for 20μM, respectively. 1 showed significant cytotoxic activity against HepG2 cell lines.

Synthesis, characterization, crystal structure, electrochemical, solvatochromic and biological investigation of novel N4 and N3 type Cu(ii) Schiff base complexes

2017 ◽  
Vol 41 (21) ◽  
pp. 12554-12561 ◽  
Author(s):  
Akbar Azary ◽  
Abolfazl Bezaatpour ◽  
Saber Zahri ◽  
Mandana Amiri
Keyword(s):  
Crystal Structure ◽  
Schiff Base ◽  
Infrared Spectroscopy ◽  
Elemental Analysis ◽  
Schiff Base Complexes ◽  
Conductivity Measurements ◽  
Biological Investigation ◽  
X Ray ◽  
X Ray Crystallography

In the present study, three novel Cu(ii) Schiff base complexes were synthesized and characterized using infrared spectroscopy, elemental analysis, conductivity measurements and X-ray crystallography.

scholarly journals Spectroscopic studies of benzoxazole-2-thione complexes. Derivatives of cobalt(II) and nickel(II) halides

1976 ◽  
Vol 54 (1) ◽  
pp. 85-90 ◽  
Author(s):  
Carlo Preti ◽  
Giuseppe Tosi
Keyword(s):  
Magnetic Susceptibility ◽  
Ir Spectra ◽  
Electronic Spectra ◽  
Spectroscopic Studies ◽  
Ligand Field ◽  
Conductivity Measurements ◽  
Derivatives Of ◽  
Ligand Field Parameters ◽  
Cobalt And Nickel

The preparation of some complexes of benzoxazole-2-thione with halides of cobalt(II) and nickel(II) is reported. The complexes of cobalt(II) and nickel(II) are tetrahedral of the type ML2X2 with the exception of NiLBr2. The complexes have been studied by means of magnetic susceptibility measurements, infrared and far ir spectra, electronic spectra, and conductivity measurements. The ligand behaves as monodentate N-bonded. The various ligand field parameters, Dq, B′, and β show about 60 and 80% of covalency in the cobalt(II) and nickel(II) complexes respectively and suggest a medium strong ligand field. The spectroscopy parameters of cobalt and nickel derivatives confirm the presence of CoN2X2 and NiN2X2 chromophores.

scholarly journals Synthesis, characterization and antimicrobial studies of Mn(II) complexes of acetylthiophene and acetyl furan Schiff base derivatives

2020 ◽  
Vol 12 (1) ◽  
pp. 251-258
Author(s):  
S. Isyaku ◽  
H.N. Aliyu ◽  
E.C. Ozoro ◽  
T. Abubakar
Keyword(s):  
Magnetic Susceptibility ◽  
Schiff Base ◽  
Schiff Bases ◽  
Elemental Analysis ◽  
Salmonella Typhi ◽  
Decomposition Temperature ◽  
Molar Conductance ◽  
Molar Ratio ◽  
Azomethine Nitrogen ◽  
Antimicrobial Studies

Manganese(II) complexes of Schiff bases; 2-acetylthiophene-4‑phenylthiosemi-carbazone (AT-PTSC) and 2-furylmethylketone-4-phenylthiosemi-carbazone  (AF‑PTSC) derived from condensation of 2-acetylthiophene and 2-furylmethylketone (2-acetylfuran) each with 4-phenylthiosemicarbazide in (1:1 molar ratio) ethanol, have been synthesized. The Schiff bases and the Mn(II) complexes were characterized on the basis of melting point/decomposition temperature, solubility, magnetic susceptibility, infrared spectra, molar conductance measurements,  elemental and gravimetric  analyses. The Mn(II) complexes show moderate values of decomposition temperatures. The Schiff bases and the complexes were soluble in some common organic solvents. Infrared spectral data of the Schiff bases and their complexes, indicate coordination of the Schiff bases to the metal(II) ion via azomethine nitrogen. The effective magnetic moment of the Mn(II) complexes suggested an octahedral geometry. The molar conductance values of the complexes show that the complexes are electrolytes. The results of the elemental analysis of the ligands and their complexes are in good agreement with the calculated values, suggesting a 1:2 (metal-ligand) ratio. Antimicrobial screenings of the ligands and their complexes were conducted against gram-positive (Staphylococcus aureus,) and two gram-negative (Salmonella typhi, and Escherichia coli) bacteria specie. Also three fungi mainly (Candida albicans, Mucus indicus and Aspergillus flavus) were tested. The results showed that both the ligands and the complexes are active against the bacteria and the fungi specie. Keywords: Ligand, Schiff base, 4-phenylthiosemicarbazide, 2-acetylthiophene, 2-acetylfuran molar conductivity, magnetic susceptibility, elemental analysis.

scholarly journals Design and Development of Complexation of Ce+3 Metal Ions with Synthesized INZ Incorporated Bio-active Schiff Bases

2021 ◽  
Vol 11 (4) ◽  
pp. 3989-4006
Keyword(s):  
Schiff Base ◽  
Metal Ions ◽  
Schiff Bases ◽  
Elemental Analysis ◽  
Metal Ion ◽  
Organic Ligands ◽  
Schiff Base Complexes ◽  
Spectral Techniques ◽  
The Stability ◽  
Antibacterial And Antifungal

In the present research, a series of Ce+3 metal ions complexation with INZ incorporating Schiff bases have been reported. INZ incorporated Schiff Bases (3a-e) were developed by condensing INZ with substituted aromatic aldehyde and confirmed with various spectral Techniques such as Elemental analysis, UV, IR, 1H-NMR, 13H NMR. All the synthesized organic ligands were evaluated against antibacterial and antifungal stains and found moderate to significant results. The Ce+3 metal ion solution mixed with newly prepared bio-active INZ Schiff bases (3a-e) to afford the [Ce-INZ Schiff Base] complexes (4a-e). The stability constants of prepared complexes were evaluated and found in order as a (3e) > (3d) > (3a) > (3b) > (3c).

Niobium(V) and Tantalum(V) Derivatives of Schiff Bases Derived from β-Hydroxynaphthaldehyde and Acetylacetone with n-Hydroxy-alkylamines

1970 ◽  
Vol 25 (1) ◽  
pp. 32-36 ◽  
Author(s):  
P. Prashar ◽  
J. P. Tandon
Keyword(s):  
Schiff Base ◽  
Schiff Bases ◽  
Schiff Base Complexes ◽  
Slight Tendency ◽  
Molar Ratios ◽  
Schiff Base Derivatives ◽  
Metal Atoms ◽  
Derivatives Of

Schiff base derivatives of niobium and tantalum of the types, M(OPri)3SB, M(OPri)(SB)2 and M(SB)2(SBH) have been synthesized by the reactions of the metal isopropoxides with the Schiff bases in 1:1, 1:2 and 1:3 molar ratios (where M=Nb or Ta, SBH⊖ and SB2⊖ represent the corresponding anions of the Schiff bases). Except the triisopropoxy acetylacetone-2-hydroxy-alkylimine derivatives of these metals which are distillable, all the remaining complexes decompose when an attempt is made to distil them. The triisopropoxy mono - Schiff base and the tris - Schiff base derivatives of these metals are essentially monomeric in boiling benzene and probably possess hexa- and octa-coordinated metal atoms, while the monoisopropoxy bis-Schiff base complexes show slight tendency of polymerization.

Titanium(IV) Complexes of Monofunctional Bidentate Schiff Bases

1970 ◽  
Vol 25 (10) ◽  
pp. 1090-1094 ◽  
Author(s):  
S. R. Gupta ◽  
J. P. Tandon
Keyword(s):  
Molecular Weight ◽  
Schiff Base ◽  
Schiff Bases ◽  
General Type ◽  
Titanium Isopropoxide ◽  
Central Metal Atom ◽  
Central Metal ◽  
Coordination Numbers ◽  
Molar Ratios ◽  
Derivatives Of

Titanium (IV) complexes of monofunctional bidentate Schiff bases, such as salicylideneaniline, β-hydroxynaphthylideneaniline, benzylidene-o-aminophenol, benzylidene-2-hydroxyethylamine and benzylidene-2-hydroxy-n-propylamine have been prepared. The reactions between titanium isopropoxide and the Schiff bases in varying molar ratios resulted in the synthesis of several new derivatives of the general type, Ti (OPri)4-x (SB)x (where x = 1. 2. 3 or 4 and SB⊖ is the anion of the Schiff base SBH) in quantitative yields. The molecular weight determinations of some of the soluble derivatives indicate the possibility of coordination numbers five or seven for the central metal atom.

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