The Metal Complexes of Heterocyclic β-Diketones and their Derivatives, Part VIII Synthesis, Structure, Proton NMR and Infrared Spectral Studies of the Complexes of Al(III), Fe(III), Co(III), Rh(III), In(III), and Zr(IV) with l-Phenyl-3-methyl-4-trifluoroacetyl-pyrazolone-5 (HPMTFP)

1981 ◽  
Vol 36 (2) ◽  
pp. 213-217 ◽  
Author(s):  
Emmanuel Chukwuemeka Okafor
Keyword(s):  
Infrared Spectroscopy ◽  
Ir Spectra ◽  
Metal Complexes ◽  
Magnetic Moment ◽  
Proton Nmr ◽  
Spectral Studies ◽  
Elemental Analyses ◽  
Infrared Spectral ◽  
Pmr Spectra ◽  
Neutral Metal

New complexes of Al(III), Fe(III), Co(III), Rh(III), In(III) and Zr(IV) with 1-phenyl- 3-methyl-4-trifluoroacetyl-pyrazolone-5, (HPMTFP), have been synthesized and characterized by means of elemental analyses, conductivity and magnetic moment measurements, proton NMR and infrared spectroscopy. It is concluded that the ligand, HPMTFP, reacts as a bidentate enol forming neutral metal chelates. The PMR spectra of chelates sufficiently soluble in deuterated NMR solvents were recorded and studied. The IR spectra are measured between 4000-200 cm-1 and assignments are proposed for the observed frequencies. The M-O stretching frequency follows the order: AI > Rh > Fe = Co = Zr > In.

scholarly journals Synthesis and Characterization of Some Group 12 Metal Complexes with Tellurium Containing 10-Membered Tetraazamacrocyclic Ligands

2011 ◽  
Vol 8 (3) ◽  
pp. 1158-1163
Author(s):  
Nitu ◽  
K. K. Verma
Keyword(s):  
Metal Complexes ◽  
Spectral Studies ◽  
Conductivity Measurements ◽  
Metal Chlorides ◽  
Group 12 ◽  
Elemental Analyses ◽  
Physicochemical Studies ◽  
Tetraazamacrocyclic Ligands ◽  
Pmr Spectra

A new series of 10-membered tellurium containing tetraazamacrocyclic complexes, [ML1Cl2], [ML2Cl2] and [ML3Cl2], where [M=Zn(II), Cd(II), Hg(II); L1, L2and L3=10-membered tellurium containing tetraazamacrocyclic ligands] have been prepared via the template condensation of ethylenediamine and diaryltellurium dichlorides, R2TeCl2, (R=p-hydroxyphenyl, 3-methyl-4-hydroxyphenyl,p-methoxyphenyl) in the presence of metal chlorides. These complexes have been characterized by elemental analyses, conductivity measurements, infrared, electronic absorption and proton magnetic resonance spectral studies. IR and PMR spectra confirm the formation of 10-membered tetraazamacrocycle skeleton and their tetradentate nature. An octahedral geometry has been assigned to all the metal complexes on the basis of various physicochemical studies.

scholarly journals Synthesis, Characterization and Chelating Properties of Benzoxazolidin-2-one/ 4 - aminosalicylic Acid Clubbed Molecule Part – I

2006 ◽  
Vol 3 (4) ◽  
pp. 319-326 ◽  
Author(s):  
G. J. Patel ◽  
M. V. Hathi ◽  
S. V. Patel
Keyword(s):  
Transition Metal ◽  
Metal Complexes ◽  
Microbial Activity ◽  
Transition Metal Complexes ◽  
Magnetic Moment ◽  
Conductivity Measurement ◽  
Molar Conductivity ◽  
Spectral Studies ◽  
Aminosalicylic Acid ◽  
Elemental Analyses

Aminomethylation of benzoxazolidin-2–one was carried out by treating benzoxazolidin-2–one with formaldehyde and 4 – aminosalicylic acid. The resultant compound was designated as 3–(4-carboxy–3 - hydroxyphenyl aminomethyl) benzoxazolidin-2-one (CHPA-BOX) The transition metal complexes of Cu2+Co2+Ni2+, Mn2+, Zn2+, UO2+and Fe3+of CHPA-BOX have been prepared. Elemental analyses, spectral studies, magnetic moment determination, molar conductivity measurement and microbial activity of CHPA-BOX and its metal complexes were carried out.

scholarly journals Synthesis, Characterization and Chelating Properties of Benzimidazole-Salicylic Acid Combined Molecule

2009 ◽  
Vol 6 (1) ◽  
pp. 281-288 ◽  
Author(s):  
Kamlesh V. Patel ◽  
Arun Singh
Keyword(s):  
Salicylic Acid ◽  
Transition Metal ◽  
Transition Metal Complexes ◽  
Magnetic Moment ◽  
Mannich Reaction ◽  
Conductivity Measurement ◽  
Molar Conductivity ◽  
Spectral Studies ◽  
Aminosalicylic Acid ◽  
Elemental Analyses

Aminomethylation (i.e.Mannich reaction) of benzimidazole was carried out by treating benzimidalzole with formaldehyde and 4-aminosalicylic acid. The resultant compound was designated as 1-(4-carboxy-3-hydroxyphenyl aminomethyl) benzimidazole (BI-SA). The transition metal complexes of Cu2+, Co2+, Ni2+, Mn2+, Zn2+and Fe3+of BI-SA have been prepared and characterized by elemental analyses, spectral studies, magnetic moment determination, molar conductivity measurement and microbicidal activity.

Two copper(II) coordination polymers constructed by bis(4-(1H-imidazol-1-yl)phenyl)methanone and dicarboxylate ligands

2017 ◽  
Vol 72 (4) ◽  
pp. 257-261 ◽  
Author(s):  
Gao-Feng Wang ◽  
Xiao Zhang ◽  
Shu-Wen Sun ◽  
Hong Sun ◽  
Hui Li ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
Single Crystal ◽  
Weak Interactions ◽  
X Ray Diffraction ◽  
X Ray ◽  
Elemental Analyses ◽  
Solvothermal Methods ◽  
Solid State Structures ◽  
Aromatic Carboxylate ◽  
Neutral Metal

AbstractTwo new copper(II) complexes, {[Cu(bipmo)(npa)]}n (1) and {[Cu(bipmo)(pa)]}n (2) (bipmo=bis(4-(1H-imidazol-1-yl)phenyl)methanone), were synthesized by solvothermal methods and structurally characterized by elemental analyses, infrared spectroscopy, and single-crystal X-ray diffraction. The results from single-crystal X-ray diffraction data indicate that the solid state structures of 1 and 2 consist of neutral metal aromatic carboxylate layers, which are pillared by the weak interactions to generate 3D architectures. The topological structures of 1 and 2 are uninodal nets based on 4-connected nodes with the Schläfli symbol of (65·8).

scholarly journals Synthesis and Spectral Studies of Some Bioactive Transition Metal Complexes of [bis-2-(4-Fluorophenyl)prop-2-enaln]ethane-1,2-diamine

2019 ◽  
Vol 31 (10) ◽  
pp. 2357-2360
Author(s):  
Jagvir Singh ◽  
Anuradha ◽  
Pradeep Kumar ◽  
Mordhwaj ◽  
Ravi Kumar
Keyword(s):  
Staphylococcus Aureus ◽  
Metal Complexes ◽  
Antimicrobial Properties ◽  
Analysis Data ◽  
Antimicrobial Activities ◽  
Spectral Studies ◽  
Elemental Analysis Data ◽  
Chloride Complexes ◽  
Elemental Analyses ◽  
Uv Visible

Co(II), Ni(II) and Cu(II) metal complexes of a novel Schiff base ligand (SBL) derived from condensation of 2-(4-fluorophenyl)prop-2-enaln and ethane-1,2-diamine were synthesized. All the complexes were characterized by elemental analyses, IR, UV-visible spectroscopy, magnetic susceptibility and conductance measurements and 1H NMR. From the elemental analysis data, 1:1 [M]:[ligand] metal chloride complexes are formed having the general composition [M(SBL)Cl2] and [Cu(SBL)] Cl2, [where M = Co(II), Ni(II) and SBL= {bis-2-(4-fluorophenyl)prop-2-enaln}ethane-1,2-diamine]. The result showed that the ligand is coordinated to the metal ions in a neutral tetradentate manner with ON donor sites and the nature of metal-ligand bonding can range from covalent to ionic. Antimicrobial activities of the newly synthesized chemical compounds were evaluated against Staphylococcus aureus (ATCC 25923), Staphylococcus aureus (ATCC 3160), Cabdida albicans (ATCC 227) and Staphylococcus cereviscae (ATCC 361) species and found that metal complexes exhibited more antimicrobial properties so they are more potential and significant than the ligand.

PREPARATION AND CHARACTERIZATION OF SOME BINARY AND TERNARY METAL COMPLEXES OF IMIDAZOLE AND AMINO ACIDS

1966 ◽  
Vol 44 (14) ◽  
pp. 1637-1641 ◽  
Author(s):  
G. N. Rao ◽  
N. C. Li
Keyword(s):  
Aqueous Solution ◽  
Amino Acid ◽  
Metal Complexes ◽  
Proton Magnetic Resonance ◽  
Spectral Studies ◽  
Visible Spectra ◽  
Infrared Spectral ◽  
Ternary Metal ◽  
Ternary Metal Complexes

Five new ternary metal complexes containing imidazole and glycylglycine or amino acid have been prepared and characterized by proton magnetic resonance and infrared spectral studies. Seven new binary metal complexes have also been prepared and studied. The isolation of Cd(imidazole)6Cl2•H2O and Ni(imidazole)6-Cl2•4H2O provides evidence that the coordination number of these metal ions to imidazole in the solid state is six. The visible spectra of the Ni(II) complexes of amino acid and imidazole show that all these are octahedral in aqueous solution.

scholarly journals Synthesis and Spectral Characterization of Mn(II) and Co(II) Complexes with Tetradentate Macrocyclic Ligand

2021 ◽  
Vol 33 (9) ◽  
pp. 2207-2211
Author(s):  
Usha Bansal ◽  
Samta Goyal ◽  
Swati Agrawal
Keyword(s):  
Metal Complexes ◽  
Infrared Spectra ◽  
Elemental Analysis ◽  
Magnetic Moment ◽  
Macrocyclic Ligand ◽  
Molar Conductance ◽  
Octahedral Geometry ◽  
Metal Salts ◽  
Spectral Studies

Manganese(II) and cobalt(II) complexes were synthesized with [N4] tetradentate macrocyclic ligand using different metal salts i.e. MnCl2, Mn(NO3)2, CoCl2 and Co(NCS)2. The ligand was prepared by condensation of glyoxal and carbahydrazide. All these were characterized by elemental analysis, molar conductance measurements, magnetic moment, IR, mass, electronic and EPR spectral studies. Elemental analysis indicates that the complexes have composition MLX2 where (X = Cl–, NO3 –,NCS–). All the complexes were found to be non-electrolytic in nature so can be formulated as [MLX2]. Infrared spectra of metal complexes suggest that the ligand behaves as tetradentate. On the basis of magnetic moment, electronic and EPR spectral data, all the metal complexes were found to be high spin with octahedral geometry.

scholarly journals Studies on Inclusion Complexes of β-Cyclodextrin with Some Metal Complexes of Isatinylsemicarbazone and Isatinylthiosemicarbazone

2020 ◽  
Vol 32 (12) ◽  
pp. 3197-3202
Author(s):  
Rajeev Kumar ◽  
Sanjay Kumar ◽  
Madhu Bala
Keyword(s):  
Magnetic Susceptibility ◽  
Metal Complexes ◽  
Inclusion Complexes ◽  
Analytical Data ◽  
Molar Conductance ◽  
Spectral Studies ◽  
Tetrahedral Geometry ◽  
Solid States ◽  
Spectral Bands ◽  
Infrared Spectral

The complexes of Co(II), Ni(II), Zn(II) and Cd(II) with isatinylsemicarbazone (IstscabH) and isatinylthiosemicarbazone (IsttscabH) of composition ML2·2H2O [M = Co(II) or Ni(II) and LH = IstscabH or IsttscabH] and ML2 [M = Zn(II) or Cd(II) and LH = IstscabH or IsttscabH] have been synthesized and their antibacterial activity has been investigated. Their inclusion complexes with β-cyclodextrin (β-CD) having composition [ML2(β-CD)·2H2O] or M(C60H88N8O39S2)], [M = Co(II) or Ni(II) and LH = IstscabH or IsttscabH] and [ML2(β-CD) or M(C60H84N6O-37S2)], [M = Zn(II) or Cd(II) and LH = IstscabH or IsttscabH] have also been isolated in solid states. All the synthesized metal complexes have been characterized by analytical data, molar conductance, magnetic susceptibility, electronic and infrared spectral studies. The tetrahedral geometry for Zn(II) and Cd(II) and octahederal geometry for Co(II) and Ni(II) have been assigned on the basis of magnetic susceptibility, UV electronic transitions and IR spectral bands assignments. The structures are retained in inclusion products. A biological activity of Schiff bases, their metal complexes and inclusion products for bacteria Escherichia. coli, Bacillus subtilis and Staphylococcus aureus have been screened and activity explained.

Infrared Spectral Studies of Metal Chelates of 2-Furan Carboxaldoxime

1977 ◽  
Vol 32 (2) ◽  
pp. 225-228 ◽  
Author(s):  
V. K. Gupta ◽  
A. N. Bhat
Keyword(s):  
Metal Complexes ◽  
Furan Ring ◽  
Bidentate Ligand ◽  
Spectral Studies ◽  
Trivalent Metal ◽  
Bivalent Metal ◽  
Infra Red ◽  
Infrared Spectral ◽  
Anti Form ◽  
Cu And Zn

2-Furan carboxaldoxime (anti-form) or anti-furan 2-aldoxime (FDH) forms octahedral complexes of the type M(FDH)2Cl2 (M = Mn, Co, Ni, Cu and Zn) and M(FDH)3Cl3 (M = Cr and Fe). The infra red spectral studies have revealed that the coordination of the metal involved the oxime oxygen and the furan ring oxygen. However, the ligand acts as bidentate in case of M(FDH)2Cl2 while it is monodentate in M(FDH)3Cl3. The M-O bands in the infrared spectra may be taken as a criterion for the denticity of the ligand in its various metal complexes. Bands at 670-630 cm-1 and around 450 cm-1 indicate the bidentate ligand, while the absence of the band at 670-630 cm-1 reveals monodenticity. The : C=N-stretching frequency has been found to increase with decreasing stability of the bivalent metal complexes, while it is insensitive in case of the trivalent metal complexes.

scholarly journals Synthesis, Characterization and Antimicrobial Studies of a New Mannich BaseN-[Morpholino(phenyl)methyl]acetamide and Its Cobalt(II), Nickel(II) and Copper(II) Metal Complexes

2012 ◽  
Vol 9 (2) ◽  
pp. 875-882 ◽  
Author(s):  
L. Muruganandam ◽  
K. Krishnakumar
Keyword(s):  
Magnetic Moment ◽  
Mannich Base ◽  
Carbonyl Oxygen ◽  
Bidentate Ligand ◽  
The Other ◽  
Spectral Studies ◽  
Antimicrobial Studies ◽  
Elemental Analyses ◽  
Nitrato Complexes ◽  
Uv Visible

A new Mannich baseN-[morpholino(phenyl)methyl]acetamide (MBA), was synthesized and characterized by spectral studies. Chelates of MBA with cobalt(II), nickel(II) and copper(II) ions were prepared and characterized by elemental analyses, IR and UV spectral studies. MBA was found to act as a bidentate ligand, bonding through the carbonyl oxygen of acetamide group and CNC nitrogen of morpholine moiety in all the complexes. Based on the magnetic moment values and UV-Visible spectral data, tetracoordinate geometry for nitrato complexes and hexacoordinate geometry for sulphato complexes were assigned. The antimicrobial studies show that the Co(II) nitrato complex is more active than the other complexes.

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