Mononuclear complexes of manganese(II), iron(II), cobalt(II), nickel(II), copper(II), and zinc(II), with 4-amino-3,5-bis(pyridin-2-yl)-1,2,4 triazole and tris(2-aminoethyl) amine: crystal structure of [Ni(tren)(abpt)](NO3)2(H2O)2.25

Shakir, Mohammad; Parveen, Shama; Begum, Nishat; Chingsubam, Poonam

doi:10.1023/b:tmch.0000019420.84984.6e

Cited by 19 publications

(12 citation statements)

References 22 publications

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“…The bands around 803.74 and 468.10 cm −1 resulted from Si-O vibrations [27]. A characteristic feature of the SG-TREN adsorbents (b) when compared with the activated silica gel (a) was N-H and C-H of TREN around 1521.40 cm −1 and 2958.11 cm −1 [27][28][29]. These results showed that TREN had been grafted onto the surface of silica gel after modification.…”

Section: Ft-ir Characterization and Elemental Analysismentioning

confidence: 68%

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Tris(2-aminoethyl) amine functionalized silica gel for solid-phase extraction and preconcentration of Cr(III), Cd(II) and Pb(II) from waters

Huang

Chang

et al. 2008

Journal of Hazardous Materials

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Section: Ft-ir Characterization and Elemental Analysismentioning

confidence: 68%

“…Second, there were new peaks at 1371.82 (c), 1382.77 (d) and 1383.75 cm −1 (e) appearing in the FT-IR spectra. Based on the above analysis, it is concluded that when SG-TREN chelated with Cr(III), Cd(II) and Pb(II), respectively, the N-H band would have a negative shift [29].…”

Section: Ft-ir Characterization and Elemental Analysismentioning

confidence: 98%

Tris(2-aminoethyl) amine functionalized silica gel for solid-phase extraction and preconcentration of Cr(III), Cd(II) and Pb(II) from waters

Huang

Chang

et al. 2008

Journal of Hazardous Materials

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“…These bands displayed obvious shifts in the spectra of metal complexes supporting the coordination of the ligand to the central metal ions . The electronic spectrum of Mn(II) complex showed two non‐ligand bands at 436 and 530 nm assignable to 6 A 1g → 4 E g and 6 A 1g → 4 T 2g transitions, respectively, in an octahedral configuration . The observed magnetic moment value of Mn(II) complex equals 5.67 BM (Table ).…”

Section: Resultsmentioning

confidence: 94%

Characterization and thermal studies of nano‐synthesized Mn(II), Co(II), Ni(II) and Cu(II) complexes with adipohydrazone ligand as new promising antimicrobial and antitumor agents

Gaber

Khedr

Elsharkawy

2017

Applied Organom Chemis

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New seven complexes of N 1 ,N 6 -bis((2-hydroxynaphthalin-1-yl)methinyl)) adipohydrazone (H 2 L) with MnCl 2 •4H 2 O, CoCl 2 •6H 2 O, NiCl 2 •6H 2 O, CuCl 2 •2H 2 O, Cu(NO 3 ) 2 •3H 2 O, CuSO 4 •5H 2 O, and Cu(OAc) 2 •2H 2 O have beenprepared and characterized by the aid of elemental and thermal analyses, spectra (FT-IR, 1 H NMR, MS, UV-Vis, ESR, X-ray powder diffraction), molar conductance and magnetic moment measurements. The XRD results unambiguously confirmed the nano-sized particles of the complexes. The results showed that H 2 L behaves as dibasic tetra-dentate ligand towards the metal ions of interest. The low molar conductance values revealed the non-electrolytic nature for the chelates. The magnetic moment data, UV-Vis and ESR spectra denoted the formation of octahedral geometries for Mn(II) and Ni(II) complexes, whereas Co(II), Cu(II) complexes exhibited tetrahedral arrangement. The activation parameters for the thermal decomposition stages were calculated from TGA curves using Coats-Redfern and Horowitz-Metzger methods. The obtained data were confirmed by 3-D molecular modeling of the ligand and some complexes. The investigated compounds were screened for their antimicrobial activities against different types of organisms and antitumor activities towards human liver Carcinoma (HEPG2) cell to access their potential chemotherapeutic use. The free ligand (H 2 L) exhibited a weak inhibition of cell viability with IC 50 of 11.80 μg/ml, complexes 4, 6 and 7 showed a moderate activity with IC 50 of 5.56, 7.71 and 5.67 μg/ml, whereas complexes 1, 2, 3, and 5 displayed a strong anticancer activity with IC 50 of 4.65, 3.97, 3.30 and 4.84 μg/ml, compared with IC 50 value of 4.73 μg/ml for the doxorubicin (standard cytotoxin drug).

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“…The vanadium (V) complexes show different characteristic λ max , compared with the ligand and this is an indication for complex formation. The UV-Visible spectrum of vanadium (V) complexes show peaks in the higher energy region (290-300 nm) are likely to be due to intra-ligand π-π* transitions [43][44][45] . Also, the absorption band in the region 325-377 nm for the vanadium (V) complexes is assigned to n-π* transitions 42 .…”

Section: Uv-visible Absorptionmentioning

confidence: 99%

Synthesis, In silico Pharmacokinetic and Antimicrobial Studies of Oxovanadium(V) Complexes with 2-(4-((2-(Carboxy)phenoxy)methyl)-1H-1,2,3-triazol-1-Yl)Benzoic Acid

Alghamdi¹,

Abdelbaset²,

Nazreen³

2020

Orient. J. Chem

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New Vanadium(V) complexes with new ligand 2-(4-((2-(carboxy) phenoxy) methyl)-1H-1,2,3triazol-1-yl)benzoic acid (L 1 ) has been synthesized and characterized by different analytical techniques such as elemental analyzer, 1 H NMR, UV-Vis, IR, Mass spectrometry and thermal gravimetric analysis (TGA). The analytical data showed the stoichiometry of the Vanadium(V) to ligand was 1:1, and also indicated that the ligand (L 1 ) coordinate to the vanadium ions through oxygen and nitrogen atoms giving octahedral geometry. The ligands and their complexes have been examined for antimicrobial activity against four types of bacterial strains and one fungal strain. All the tested ligands and their complexes showed moderate to significant activity against Staphylococcus aureus, where the complex N(Pr) 4 [VO(L 1 )] (4) showed highest activity comparable to the standard drug, Amoxicillin. The other tested bacterial strains were resistant against the ligands and their complexes. The result of antifungal activity against the pathogenic fungi C. albicans indicated that the tested strain was resistant towards the ligand and its vanadium (V) complexes.

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Mononuclear complexes of manganese(II), iron(II), cobalt(II), nickel(II), copper(II), and zinc(II), with 4-amino-3,5-bis(pyridin-2-yl)-1,2,4 triazole and tris(2-aminoethyl) amine: crystal structure of [Ni(tren)(abpt)](NO₃)₂(H₂O)_2.25

Cited by 19 publications

References 22 publications

Tris(2-aminoethyl) amine functionalized silica gel for solid-phase extraction and preconcentration of Cr(III), Cd(II) and Pb(II) from waters

Tris(2-aminoethyl) amine functionalized silica gel for solid-phase extraction and preconcentration of Cr(III), Cd(II) and Pb(II) from waters

Characterization and thermal studies of nano‐synthesized Mn(II), Co(II), Ni(II) and Cu(II) complexes with adipohydrazone ligand as new promising antimicrobial and antitumor agents

Synthesis, In silico Pharmacokinetic and Antimicrobial Studies of Oxovanadium(V) Complexes with 2-(4-((2-(Carboxy)phenoxy)methyl)-1H-1,2,3-triazol-1-Yl)Benzoic Acid

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