Schiff bases are widely employed as chelating ligands in coordination chemistry, and their metals complexes have been extensively studied because of their potential applications. N, N-donor Schiff bases ligands are know to form series of transition-metal complexes display interes...
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Research Article10.9734/CSJI/2026/v35i11015
A new Co (III) complex prepared by the reaction of 2-((2 hydroxyethylimino)methyl)phenol (H2L) with Co(III) ion is reported in this paper. The H2L ligand is structurally characterized by elemental analysis, NMR and infrared spectroscopies. The mononuclear complex [Co(HL)2]·Cl·H2O...
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Research Article10.9734/irjpac/2024/v25i6890
The unsymmetric monocarbonohydrazide Schiff base (H5L1) (1) and the symmetric dicarbonohydrazone (H4L2) (2) were prepared from a monocondensation reaction between carbonohydrazide and 2-hydroxybenzaldehyde, respectively, in 1/1 and 1/2 ratio. The compounds were characterized by e...
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Research Article10.9734/irjpac/2023/v24i5823
The present investigation describes the synthesis of the ligand 2-((2-hydroxyethylimino)methyl)-6-methoxyphenol (H2L) and its complex of Mn(III) cation. The structure of the compound was elucidated by spectroscopic study and X-ray diffraction for the complex formulated as [{Mn(μ–...
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Research Article10.9734/irjpac/2022/v23i6794
Adama Sy, Andrea Daolio, Dame Gadiaga, Paolo Pio Mazzeo, Ibrahima Elhadji Thiam, Alessia Bacchi & Mohamed Gaye·Asian Journal of Chemical Sciences·2026
The reactions of Schiff base N'-(4-hydroxy-3-methoxybenzylidene)isonicotinohydrazide (H2L) with CoCl2.6H2O provided one new mononuclear complex formulated as {[Co(H2L)2(H2O)4]·2Cl·2H2O} (1). The study aims to study and characterise the compound by elemental analysis, infrared, an...
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Research Article10.9734/ajocs/2026/v16i2433
Mariama Thiam, Amar Diop, Ibrahima Elhadji Thiam, Ousmane Diouf, Pascal Retailleau, Sylvain Bertaina & Mohamed Gaye·Asian Journal of Chemical Sciences·2025
A new tetranuclear compound [Mn4(o-vanilin)6(N(CN)2)2(MeOH)2] (1) has been synthesized under reflux and structurally characterized by elemental analysis, IR, conductance measurement, variable temperature magnetic measurement and single crystal. The complex (1) crystallizes in the...
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Research Article10.9734/ajocs/2025/v15i6410
Heterometallic f/s-block complexes are not plentiful but play pivotal roles in understanding metal synergy in materials science and catalysis. Reaction of Y(NO3)3.6H2O with EDTANa2.2H2O (ethylenediaminetetraacetic acid, disodium salt dihydrate) gives the dodecanuclear {Y4Na8(L)4(...
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Research Article10.9734/irjpac/2025/v26i3913
The ligand 1,3-bis-((5-methyl-1H-imidazol-4-yl)methyleneamino)propan-2-ol (H3L) derived from 1,3-diaminopropan-2-ol and 5-methyl-1H-imidazole-4-carbaldehyde has been synthetized and used to prepare five complexes in which the ligand acts in tetradentate fashion. Complexes formul...
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Research Article10.9734/ajocs/2024/v14i5326
Six news dinuclear metal transition (Mn(II) (1), Fe(II) (2), Co(II) (3), Ni(II) (4), Cu(II) (5) and Zn(II) (6)) complexes have been synthesized from a new hexadentate Schiff base N’1,N’4-bis(1-(pyridin-2-yl)ethylidene)succinohydrazide (H2L). The ligand was characterized by eleme...
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Research Article10.9734/irjpac/2024/v25i5879
A new unsymmetrical ligand (E)-2-methoxy-4-((1-phenylethylimino)methyl)phenol C16N17NO2 (I), was synthetized by one-step condensation reaction. The structure of this new compound was confirmed by elemental analysis, FT-IR, UV-Visible and 1H and 13C NMR spectroscopy techniques. Th...
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Research Article10.9734/CSJI/2023/v32i6877
Complexes of nickel (II) and iron (III) are easily synthetized using the symmetrical ligand 1,5-bis(1-(pyridin-2-yl)ethylidene)carbonohydrazide) (H2L) and metal nitrate salts. Square [2x2] grids structure of one tetranuclear iron and one tetranuclear nickel complex were isolated....
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Research Article10.9734/irjpac/2023/v24i4819
Fe(III) complex of the hydrazone from (E)-N'-(thiophen-2-ylmethylene)isonicotinohydrazide (HL) has been synthesized and characterized by elemental analysis, electrical conductance in non-aqueous solvents, FT-IR and electronic spectroscopies, room temperature magnetic measurement...
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Research Article10.9734/irjpac/2023/v24i2809
A new zinc(II) complex, ZnCl(SCN)(H₂L)₂, derived from the Schiff base ligand N′-[(E)-(2-hydroxy)methylidene]pyridine-4-carbohydrazide (H₂L), was synthesised and structurally characterised by single-crystal X-ray diffraction. The complex crystallises in the orthorhombic space grou...
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Research Article10.9734/irjpac/2026/v27i51021
The hydrazone Schiff-base ligand N’-[(E)-(4-hydroxy-3-methoxybenzylidene)]pyridine-3-carbohydrazide (H₂L) was synthesized by condensing paravanillin with nicotinohydrazide and was characterised using infrared, nuclear magnetic resonance, ultraviolet–visible, and single-crystal X-...
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Research Article10.9734/CSJI/2026/v35i41052
The neutral hetero-trinuclear compound 3d-4f, [Cu(II)La(III)Cu(II)] was obtained with the “brick by brick” method and it crystallizes in the monoclinic system with a space group of P2/n. The asymmetric unit of the structure of [Cu2(μ-L2)La(NO3)2] contains two molecules of the did...
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Research Article10.9734/irjpac/2024/v25i4863
The reaction of 3-chloro-benzoyl chloride and 2-aminobenzothiazole in the presence of potassium thiocyanate yielded a yellowish solid C15H10ClN3OS2 (1). Reaction of 1 with cobalt chloride yield a yellowish solid C14H11ClN2O2S (2) which gives crystal suitable for X-ray analyses. T...
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Research Article10.9734/irjpac/2024/v25i4861
Babacar Diop, Thierno Moussa Seck, Cheikh Ndoye, Ibrahima El-hadji Thiam, Ousmane Diouf, Farba Bouyagui Tamboura, Pascal Retailleau & Mohamed Gaye·Asian Journal of Chemical Sciences·2024
A new Co(III) complex prepared by the reaction of N'–(1–(pyridin–2 yl)ethylidene) isonicotinohydrazide (H2L) with Co(II) ion is reported in this paper. The H2L ligand is structurally characterized by elemental analysis, NMR, and infrared spectroscopies. The mononuclear complex [C...
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Research Article10.9734/ajocs/2024/v14i3306
Dame Gadiaga, Aïssatou Alioune GAYE, Adama Sy, Bineta Diome, James Orton, Ibrahima Elhadji Thiam, Simon Coles, Ousmane Diouf & Mohamed Gaye·Asian Journal of Chemical Sciences·2026
A mononuclear manganese(II) complex of N′-(4-hydroxy-3-methoxybenzylidene)isonicotinohydrazide (H₂L) was synthesised and characterised to examine its structural features and DPPH radical-scavenging activity relative to the free ligand. The ligand was prepared by condensation of i...
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Research Article10.9734/ajocs/2026/v16i6486
Mbossé Ndiaye Guèye, Mariama Thiam, Pedro Henrique de Oliveira Santiago, Ngoné Diouf, Ibrahima Elhadji Thiam, Ousmane Diouf, Javier Ellena, Abdou Salam Sall & Mohamed Gaye·Chemical Science International Journal·2024
Five new transition metal complexes [Mn(L)(Cl)] (1), [Fe(L)(Cl)] (2), [Co(L)(H2O)2] (3), [Ni(L)(H2O)] (4) and [Cu(L)] (5), are synthesized from the Schiff base ligand N,N'-Bis(5-bromosalicylidene)-propane-1,2-diamine (H2L) which derived from the condensation of 5-bromosalicylald...
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Research Article10.9734/CSJI/2024/v33i6942
New complexes prepared by the reaction of N,N’-bis(3-methoxysalicylidenimino-1,3-diaminopropane) (H2L) with Ni(II), Zn(II) and Cu(II) ions are reported in this paper. The H2L ligand is structurally characterized by elemental analysis, NMR, infrared, UV-Vis spectroscopies, conduct...
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Research Article10.9734/irjpac/2024/v25i3853