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Adly OMI, Taha A, Fahmy SA, Ibrahim MA. TD-DFT calculations, dipole moments, and solvatochromic properties of 2-aminochromone-3-carboxaldehyde and its hydrazone derivatives. RSC Adv 2023; 13:26587-26603. [PMID: 37674487 PMCID: PMC10478642 DOI: 10.1039/d3ra05081e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Accepted: 08/22/2023] [Indexed: 09/08/2023] Open
Abstract
2-Aminochromone-3-carboxaldehyde (ACC) and its hydrazones (ACMHCA and ACMNPHTCA) with semicarbazide hydrochloride and N-phenylthiosemicarbazide were synthesized and characterized by elemental analysis and spectral studies. The solvatochromic behavior of the title compounds in various solvents showed distinct bathochromic shifts on going from nonpolar to polar solvents, suggesting intramolecular-charge-transfer (ICT) solute-solvent interactions. The ground and excited state dipole moments of ACC, ACMHCA, and ACMNPHTCA were determined experimentally by the solvatochromic shift method using the Bilot-Kawski, Lippert-Mataga, Bakhshiev, Kawski-Chamma-Viallet functions, and a microscopic Reichardt's solvent polarity parameter (ENT). All the investigated molecules showed a substantial increase in the dipole moment upon excitation to the emitting state. The experimental results were generally consistent with the values obtained by the TD-DFT, B3LYP/6-311G++(d,p) method. Molecular electrostatic potential (MEP) mapping and natural charge and natural bonding orbital (NBO) analysis were performed and the results were discussed. The 1H NMR chemical shifts of the prepared compounds were simulated by the gage independent atomic orbital (GIAO) method and compared with their experimental chemical shift values. The biological activity data were correlated with the frontier molecular orbitals. The photovoltaic behavior of the title compounds showed there was sufficient electron injection.
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Affiliation(s)
- Omima M I Adly
- Department of Chemistry, Faculty of Education, Ain Shams University Roxy Cairo Egypt
| | - Ali Taha
- Department of Chemistry, Faculty of Education, Ain Shams University Roxy Cairo Egypt
| | - Shery A Fahmy
- Department of Chemistry, Faculty of Education, Ain Shams University Roxy Cairo Egypt
| | - Magdy A Ibrahim
- Department of Chemistry, Faculty of Education, Ain Shams University Roxy Cairo Egypt
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2
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Adly OMI, Shebl M, Abdelrhman EM, El‐Shetary BA. Structural variety of Cu (II), Ni (II) and Co (II) complexes of a hydrazone based on 5‐acetyl‐4‐hydroxy‐2H‐1,3‐thiazine‐2,6(3H)‐dione: Synthesis, spectroscopic, DFT, antitumor and docking studies. Appl Organomet Chem 2023. [DOI: 10.1002/aoc.7036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Omima M. I. Adly
- Department of Chemistry, Faculty of Education Ain Shams University Roxy Cairo Egypt
| | - Magdy Shebl
- Department of Chemistry, Faculty of Education Ain Shams University Roxy Cairo Egypt
| | | | - B. A. El‐Shetary
- Department of Chemistry, Faculty of Education Ain Shams University Roxy Cairo Egypt
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3
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Nabil N, Adly OMI, Shebl M, Taha A, Samy F. Ni II and Co II binary and ternary complexes of 3-formylchromone: spectroscopic characterization, antimicrobial activities, docking and modeling studies. RSC Adv 2022; 12:29939-29958. [PMID: 36321099 PMCID: PMC9580502 DOI: 10.1039/d2ra03475a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2022] [Accepted: 09/29/2022] [Indexed: 12/01/2022] Open
Abstract
Reactions of 3-formylchromone (L) with Ni(ii) and Co(ii) ions having different anions (acetate, perchlorate, nitrate, and chloride) yielded a series of binary and ternary octahedral complexes with the general formula [ML n L' m X y (S) a ]Z y ·bS, where M = Ni or Co, n = 1-3, L' = auxiliary ligand = 8-hydroxyquinoline or 1,10-phenanthroline, m = 1 or 2, X = acetate or chloride, y = 0 or 2, S = H2O or MeOH, a = 0-2, Z = nitrate or perchlorate and b = 0-1.5. Elemental and thermal analyses and infra-red, electronic, mass, magnetic susceptibility and molar conductivity measurements were successfully utilized to characterize the structures of the chromone complexes. The chromone ligand acts as a neutral bidentate ligand through its formyl and γ-pyrone oxygen atoms. The obtained complexes were formed with molar ratios 1 : 2 and 1 : 3 M : L for the binary and 1 : 2 : 1 and 1 : 1 : 1 M : L : L' for the ternary complexes. The kinetic parameters of the thermal degradation steps were estimated and explained using the Coats-Redfern equations. The synthesized complexes showed antimicrobial activity with higher activity toward Candida albicans and Bacillus subtilis. Docking studies showed good agreement with the antimicrobial activity. Molecular modeling of the synthesized complexes was performed using Hyperchem at the PM3 level and the calculated structures correlate with the experimental data.
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Affiliation(s)
- Noha Nabil
- Department of Chemistry, Faculty of Education, Ain Shams UniversityRoxyCairo 11566Egypt+20 0222581243+20 1096418414
| | - Omima M. I. Adly
- Department of Chemistry, Faculty of Education, Ain Shams UniversityRoxyCairo 11566Egypt+20 0222581243+20 1096418414
| | - Magdy Shebl
- Department of Chemistry, Faculty of Education, Ain Shams UniversityRoxyCairo 11566Egypt+20 0222581243+20 1096418414
| | - Ali Taha
- Department of Chemistry, Faculty of Education, Ain Shams UniversityRoxyCairo 11566Egypt+20 0222581243+20 1096418414
| | - Fatma Samy
- Department of Chemistry, Faculty of Education, Ain Shams UniversityRoxyCairo 11566Egypt+20 0222581243+20 1096418414
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Salah N, Emara AAA, Adly OMI, Taha A, Nabeel AI, Aziz MA, Ibrahim MA. Novel NO
2
semicarbazone ligand and its metal complexes as VEGFR‐2 inhibitors: Synthesis, spectral characterization, DFT calculations, molecular docking, antimicrobial and antitumor evaluation. Appl Organomet Chem 2022. [DOI: 10.1002/aoc.6845] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Nesma Salah
- Department of Chemistry, Faculty of Education Ain Shams University, Roxy Cairo Egypt
| | - Adel A. A. Emara
- Department of Chemistry, Faculty of Education Ain Shams University, Roxy Cairo Egypt
| | - Omima M. I. Adly
- Department of Chemistry, Faculty of Education Ain Shams University, Roxy Cairo Egypt
| | - A. Taha
- Department of Chemistry, Faculty of Education Ain Shams University, Roxy Cairo Egypt
| | - Asmaa I. Nabeel
- Department of Chemistry, Faculty of Education Ain Shams University, Roxy Cairo Egypt
| | - Maged A. Aziz
- Department of Chemistry, Faculty of Science Zagazig University Zagazig Egypt
| | - Magdy A. Ibrahim
- Department of Chemistry, Faculty of Education Ain Shams University, Roxy Cairo Egypt
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5
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Adly OMI, Taha A, Ibrahim MA. New nickel (II), cobalt (III), and iron (III) complexes with
N
′‐[(2‐aminochromon‐3‐yl)methylidene]benzohydrazide: Synthesis, characterization, solvatochromic shift, dipole moment, and DFT calculations. Appl Organomet Chem 2022. [DOI: 10.1002/aoc.6558] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Omima M. I. Adly
- Department of Chemistry, Faculty of Education Ain Shams University Cairo Egypt
| | - Ali Taha
- Department of Chemistry, Faculty of Education Ain Shams University Cairo Egypt
| | - Magdy A. Ibrahim
- Department of Chemistry, Faculty of Education Ain Shams University Cairo Egypt
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Ibrahim MA, Emara AAA, Taha A, Adly OMI, Nabeel AI, Salah N. Novel metal complexes with pyrano[3,2‐
c
]quinoline‐3‐carboxaldehyde: Synthesis, spectroscopic, molecular modeling, QSAR, antimicrobial, and antitumor studies. Appl Organomet Chem 2021. [DOI: 10.1002/aoc.6535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Magdy A. Ibrahim
- Department of Chemistry, Faculty of Education Ain Shams University Cairo Egypt
| | - Adel A. A. Emara
- Department of Chemistry, Faculty of Education Ain Shams University Cairo Egypt
| | - Ali Taha
- Department of Chemistry, Faculty of Education Ain Shams University Cairo Egypt
| | - Omima M. I. Adly
- Department of Chemistry, Faculty of Education Ain Shams University Cairo Egypt
| | - Asmaa I. Nabeel
- Department of Chemistry, Faculty of Education Ain Shams University Cairo Egypt
| | - Nesma Salah
- Department of Chemistry, Faculty of Education Ain Shams University Cairo Egypt
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Adly OMI, El-Shafiy HF. New metal complexes derived from S-benzyldithiocarbazate (SBDTC) and chromone-3-carboxaldehyde: synthesis, characterization, antimicrobial, antitumor activity and DFT calculations. J COORD CHEM 2019. [DOI: 10.1080/00958972.2018.1564912] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Omima M. I. Adly
- Department of Chemistry, Faculty of Education, Ain Shams University, Cairo, Egypt
| | - Hoda F. El-Shafiy
- Department of Chemistry, Faculty of Education, Ain Shams University, Cairo, Egypt
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Taha A, Adly OMI, Shebl M. Reactivity and molecular modeling of new solvatochromic mixed-ligand copper(II) chelates of 2-acetylbutyrolactone and dinitrogen bases. Spectrochim Acta A Mol Biomol Spectrosc 2015; 140:74-84. [PMID: 25589389 DOI: 10.1016/j.saa.2014.11.056] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2014] [Revised: 11/01/2014] [Accepted: 11/20/2014] [Indexed: 06/04/2023]
Abstract
A new series of solvatochromic mononuclear mixed ligand chelates with the general formula: Cu(AcBL)(L)X; where AcBL=2-acetylbutyrolactonate, L=N,N,N',N'-tetramethylethylenediamine (Me4en), N,N,N',N'-tetramethylpropylene diamine (Me4pn), 1,10-phenanthroline (Phen) or 2,2'-bipyridyl (Bipy) and X=ClO4-, NO3- or Br- have been synthesized and characterized by the analytical and spectral methods, as well as magnetic and molar conductance measurements. The d-d absorption bands of Me4en-chelates as Nujol mulls or weak donor solvents solutions revealed square-planar, distorted octahedral and/or distorted trigonal bipyramid geometries for the perchlorate, nitrate and bromide chelates, respectively. However, an octahedral structure is identified for chelates in strong donor solvents. Perchlorate chelates show a remarkable color change from violet to green as the Lewis basicity of the donor solvent increases, whereas bromide chelates are mainly affected by the Lewis acidity of solvent. Specific and non-specific interactions of solvent molecules with the chelates were investigated on the basis of unified solvation model. Structural parameters of the free ligands and their Cu(II)-chelates have been calculated on the basis of semiempirical PM3 level and correlated with the experimental data.
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Affiliation(s)
- A Taha
- Department of Chemistry, Faculty of Education, Ain Shams University, Roxy, Cairo 11711, Egypt
| | - Omima M I Adly
- Department of Chemistry, Faculty of Education, Ain Shams University, Roxy, Cairo 11711, Egypt.
| | - Magdy Shebl
- Department of Chemistry, Faculty of Education, Ain Shams University, Roxy, Cairo 11711, Egypt
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Adly OMI, Emara AAA. Spectroscopic and biological studies of new binuclear metal complexes of a tridentate ONS hydrazone ligand derived from 4-amino-6-methyl-3-thioxo-3,4-dihydro-1,2,4-triazin-5(2H)-one and 4,6-diacetylresorcinol. Spectrochim Acta A Mol Biomol Spectrosc 2014; 132:91-101. [PMID: 24858350 DOI: 10.1016/j.saa.2014.04.118] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2014] [Revised: 04/13/2014] [Accepted: 04/22/2014] [Indexed: 06/03/2023]
Abstract
The binuclear hydrazone, H2L, ligand derived from 4-amino-6-methyl-3-thioxo-3,4-dihydro-1,2,4-triazin-5(2H)-one and 4,6-diacetylresorcinol, in the molar ratio 2:1, and its copper(II), nickel(II), cobalt(II), zinc(II), cadmium(II), cerium(III), iron(III), oxovanadium(IV) and dioxouranium(VI) complexes have been synthesized. Structures of the ligand and its metal complexes were characterized by elemental analyses, spectral (infrared, electronic, mass, 1H NMR and ESR) data, magnetic susceptibility, molar conductivity measurements and thermal gravimetric analysis (TGA). The ligand acts as dibasic with two ONS tridentate sites. The bonding sites are the azomethine nitrogen, phenolate oxygen and sulfur atoms. The metal complexes exhibit different geometrical arrangements such as square planer, tetrahedral and octahedral. The Coats-Redfern equation was used to calculate the kinetic and thermodynamic parameters for the different thermal decomposition steps of some complexes. The ligand and its metal complexes showed antimicrobial activity towards Gram-positive bacteria (Staphylococcus aureus and Bacillus subtilis), Gram-negative bacteria (Salmonella typhimurium and Escherichia coli), yeast (Candida albicans) and fungus (Aspergillus fumigatus). Structural parameters of the ligand and its metal complexes were theoretically computed on the basis of semiempirical PM3 level, and the results were correlated with their experimental data.
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Affiliation(s)
- Omima M I Adly
- Department of Chemistry, Faculty of Education, Ain Shams University, Roxy, Cairo 11711, Egypt.
| | - Adel A A Emara
- Department of Chemistry, University College in Makkah, Umm Al-Qura University, Makkah 21955, Saudi Arabia
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Taha A, Emara AAA, Mashaly MM, Adly OMI. Spectral characterization, molecular modeling and antimicrobial studies on hydrazone metal complexes of 5-acetyl-4-hydroxy-2H-1,3-thiazine-2,6(3H)dione and S-methyl dithiocarbazate. Spectrochim Acta A Mol Biomol Spectrosc 2014; 130:429-439. [PMID: 24810030 DOI: 10.1016/j.saa.2014.04.007] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2014] [Revised: 03/27/2014] [Accepted: 04/01/2014] [Indexed: 06/03/2023]
Abstract
Metal complexes of copper(II), nickel(II), cobalt(II), oxovanadium(IV), chromium(III) and cadmium(II) with a new bridged ONS dibasic tridentate hydrazone (H2L) derived from 5-acetyl-4-hydroxy-2H-1,3-thiazine-2,6(3H)-dione with S-methyl dithiocarbazate have been synthesized and characterized by elemental analysis, molar conductance, magnetic susceptibility measurements, spectral (infrared, electronic, mass, 1H NMR and ESR) studies as well as thermal gravimetric analysis (TGA). The synthesized complexes have dimeric structures with the general formula [ML(NO3)m(H2O)x]2·nH2O·zMeOH, L=dianion of the hydrazone, m=0-1, x=0-2, n=0-4 and z=0-1. The metal complexes exhibited square planar, tetrahedral and octahedral geometrical arrangements, the molar conductivity data indicates that all complexes are neutral. The Coats-Redfern equation was used to calculate the kinetic and thermodynamic parameters for the different thermal decomposition stages of some complexes. Structural parameters of the ligand and its metal complexes have been theoretically computed on the basis of semiempirical PM3 level and the results were correlated with their experimental data. Antibacterial activities of the free ligand and its metal complexes were screened against various organisms.
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Affiliation(s)
- Ali Taha
- Department of Chemistry, Faculty of Education, Ain Shams University, Roxy, Cairo, Egypt.
| | - Adel A A Emara
- Department of Chemistry, University College in Mekkah, Umm Al-Qura University, Mekkah 21955, Saudi Arabia
| | - Mahmoud M Mashaly
- Department of Chemistry, Faculty of Education, Ain Shams University, Roxy, Cairo, Egypt
| | - Omima M I Adly
- Department of Chemistry, Faculty of Education, Ain Shams University, Roxy, Cairo, Egypt
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Adly OMI. Characterization, molecular modeling and antimicrobial activity of metal complexes of tridentate Schiff base derived from 5-acetyl-4-hydroxy-2H-1,3-thiazine-2,6(3H)-dione and 2-aminophenol. Spectrochim Acta A Mol Biomol Spectrosc 2012; 95:483-490. [PMID: 22580142 DOI: 10.1016/j.saa.2012.04.030] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2012] [Revised: 03/18/2012] [Accepted: 04/07/2012] [Indexed: 05/31/2023]
Abstract
Metal complexes of Ni(II), Co(II), Cd(II), VO(IV) and UO(2)(VI) as well as several Cu(II) salts, including Cl(-),NO(3)(-),AcO(-),ClO(4)(-) and SO(4)(-2) with a tridentate O(2)N donor Schiff base ligand (H(2)L), synthesized by condensation of 5-acetyl-4-hydroxy-2H-1,3-thiazine-2,6(3H)-dione with 2-aminophenol, were prepared and characterized on the basis of elemental analyses, spectral, magnetic, molar conductance and thermal gravimetric analysis. Square planar, tetrahedral and octahedral geometries have been assigned to the prepared complexes. Molecular parameters of the ligand and its metal complexes have been calculated and correlated with the experimental data, and the changes of bond lengths are linearly correlated with IR data. The antimicrobial activities of the synthesized compounds were tested in vitro against the sensitive organisms Staphylococcus aureus as Gram positive bacteria, Proteus vulgaris as Gram negative bacteria and Candida albicans as fungus strain, and the results are discussed.
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Affiliation(s)
- Omima M I Adly
- Department of Chemistry, Faculty of Education, Ain Shams University, Roxy, Cairo 11711, Egypt.
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12
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Adly OMI. Synthesis, molecular modeling, thermal and spectral studies of metal complexes of hydrazone derived from 5-acetyl-4-hydroxy-2H-1,3-thiazine-2,6(3H)-dione and thiosemicarbazide. Spectrochim Acta A Mol Biomol Spectrosc 2011; 79:1295-1303. [PMID: 21616708 DOI: 10.1016/j.saa.2011.04.058] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2011] [Revised: 04/16/2011] [Accepted: 04/27/2011] [Indexed: 05/30/2023]
Abstract
Metal complexes with the general formula [ML(H2O)(CH3OH)x]·nH2O·(CH3OH)y(NO3)z [M=Cu(II), Ni(II), Co(II), VO(IV), Cr(III), Cd(II), Zn(II) or UO2(VI); x=0-2; y=0,1; z=0,1; n=0-2, 6 and L=hydrazone (H2L) derived from condensation of thiosemicarbazide with 5-acetyl-4-hydroxy-2H-1,3-thiazine-2,6(3H)-dione. The synthesized ligand and its metal complexes have been characterized on the basis of elemental analyses, spectral and magnetic studies as well as thermal gravimetric analysis (TGA). The deprotonated ligand acts as a dibasic tridentate (ONS) via phenolate oxygen, azomethine (CN), and thiolate (C-S) groups. Copper(II) complex exhibits square planar geometry. Nickel(II), chromium(III) and dioxouranium(VI) complexes exhibit octahedral geometry. Cobalt(II), cadmium(II) and zinc(II) complexes showed tetrahedral geometry, whereas oxovanadium(IV) reveals square pyramidal geometry. Thermal analysis are investigated and showed either three or four thermal decomposition steps. Kinetic parameters (Ea, A, ΔH, ΔS and ΔG) of the thermal decomposition stages have been evaluated using Coats-Redfern equations. The molecular parameters of the ligand and its metal complexes have been calculated and correlated with the experimental data such as IR and TGA results.
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Affiliation(s)
- Omima M I Adly
- Department of Chemistry, Faculty of Education, Ain Shams University, Roxy, Cairo 11711, Egypt.
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Emara AAA, Saleh AA, Adly OMI. Spectroscopic investigations of new binuclear transition metal complexes of Schiff bases derived from 4,6-diacetylresorcinol and 3-amino-1-propanol or 1,3-diamino-propane. Spectrochim Acta A Mol Biomol Spectrosc 2007; 68:592-604. [PMID: 17321197 DOI: 10.1016/j.saa.2006.12.034] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2006] [Accepted: 12/17/2006] [Indexed: 05/14/2023]
Abstract
The bifunctional carbonyl compound; 4,6-diacetylresorcinol (DAR) serves as precursor for the formation of different Schiff base ligands, which are either di- or tetra-basic with two symmetrical sets of either O2N or N2O tridentate chelating sites. The condensation of 4,6-diacetylresorcinol with 3-amino-1-propanol (3-AP) or 1,3-diaminopropane (DAP), yields the corresponding hexadentate Schiff base ligands, abbreviated as H4La and H2Lb, respectively. The structures of these ligands were elucidated by elemental analyses, IR, mass, 1H NMR and electronic spectra. Reaction of the Schiff base ligands with copper(II), nickel(II), cobalt(II), zinc(II), cadmium(II), iron(III), chromium(III), vanadyl(IV) and uranyl(VI) ions in 1:2 molar ratio afforded the corresponding transition metal complexes. A variety of binuclear complexes for the metal complexes were obtained with the ligands in its di- or tetra-deprotonated forms. The structures of the newly prepared complexes were identified by elemental analyses, infrared, electronic, mass, 1H NMR and ESR spectra as well as magnetic susceptibility measurements and thermal gravimetric analysis (TGA). The bonding sites are the azomethine and amino nitrogen atoms, and phenolic and alcoholic oxygen atoms. The metal complexes exhibit different geometrical arrangements such as square planar, tetrahedral, square pyramid and octahedral arrangement.
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Affiliation(s)
- Adel A A Emara
- Department of Chemistry, Faculty of Education, Ain Shams University, Roxy, Cairo, Egypt.
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Emara AAA, Adly OMI. Synthesis and spectroscopic studies of new binuclear transition metal complexes of Schiff bases derived from 4,6-diacetylresorcinol. TRANSIT METAL CHEM 2007. [DOI: 10.1007/s11243-007-0245-z] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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