1
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Yernale NG, Suliphuldevara Mathada B, Shivprasad S, Hiremath S, Karunakar P, Venkatesulu A. Spectroscopic, theoretical and computational investigations of novel benzo[b]thiophene based ligand and its M(II) complexes: As high portentous antimicrobial and antioxidant agents. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 302:123114. [PMID: 37454435 DOI: 10.1016/j.saa.2023.123114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2023] [Revised: 07/04/2023] [Accepted: 07/06/2023] [Indexed: 07/18/2023]
Abstract
The reaction of 3-chlorobenzo[b]thiophene-2-carbohydrazide with 4-(diethylamino) salicylaldehyde gave the new ligand; 3-chloro-N'-(4-(diethylamino)-2-hydroxybenzylidene)-benzo[b]thiophene-2-carbohydrazide. The Cu(II), Co(II), Ni(II), and Zn(II) complexes have been successfully prepared. The ligand and the complexes were characterized by analytical, FT-IR, 1H NMR, mass, UV-visible spectroscopy, molar conductivity, and magnetic susceptibility measurements. The FT-IR spectral data showed that the ligand adopted a tridentate fashion when binding with the metal ions via the nitrogen atoms of the imine (C = N), carboxyl (C = O), and phenolic oxygen (O-H) donor atoms. Density Functional Theory (DFT) estimations for the ligand at the DFT/B3LYP level via 6-31G++ (d, p) replicate the structure and geometry. Finally, HOMO and LUMO analyses were used for the charge transfer interface of the structure. Furthermore, molecular docking and ADME calculations were also performed to correlate and interpret the experimental results. The antimicrobial activity study illustrated enhancement in the activity of the free ligand upon complex formation, and the Cu(II) complex (MIC 25 µg mL-1) may be considered a promising antibacterial agent, and the Ni(II) and Zn(II) complexes (MIC 25 µg mL-1) as promising antifungal agents. Also, synthesized Cu(II) and Zn(II) metal complexes (MIC 3.125 µg mL-1) showed promising anti-TB activity against M. tuberculosis. Further, benzo[b]thiophene-based ligand and its metal complexes were evaluated for in vitro antioxidant activity, and in silico docking studies were carried out against Cytochrome c Peroxidase (PDB ID: 2X08).
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Affiliation(s)
| | | | - Swami Shivprasad
- Department of Chemistry, Guru Nanak First Grade College, Bidar, Karnataka, India
| | - Sunilkumar Hiremath
- Department of Chemistry, Guru Nanak First Grade College, Bidar, Karnataka, India
| | - Prashantha Karunakar
- Department of Biotechnology, Dayananda Sagar College of Engineering (Affiliated to Visvesvaraya Technological University, Belagavi), Kumaraswamy Layout, Bangalore 560111, Karnataka, India
| | - Adavala Venkatesulu
- Department of PG Studies and Research Centre in Physics, Govt. First Grade College, Hosakote, Bangalore Rural, Karnataka, India
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2
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Padmaja D, Rajegowda H, Chethan B, Krishnamurthy P, Khan RUR, Suchetan P, Lokanath N, Somashekar M, Jayashankar B. New thioether-hydrazide based ONS donor Schiff base and its Pd(II) complex: Synthesis, crystal structure, thermal analysis, hirshfeld surface analysis, quantum chemical studies and molecular docking. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2023.135041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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3
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Sanad SG, Shebl M. Association thermodynamic parameters for nano Cu(NO 3) 2·2.5H 2O with ligands at different temperatures. RSC Adv 2022; 12:28902-28909. [PMID: 36320751 PMCID: PMC9555013 DOI: 10.1039/d2ra05933a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Accepted: 10/03/2022] [Indexed: 06/16/2023] Open
Abstract
Association thermodynamic parameters are important because they give information about the nature of ion-ion interaction in solution, the dielectric constant of the medium and the intermolecular hydrogen bonding between the solvent molecules. The different association thermodynamic parameters for nano copper(ii) nitrate hemi pentahydrate in the presence of 4,6-diacetylresorcinol and 4,6-bis(1-hydrazonoethyl)benzene-1,3-diol as ligands were calculated. Conductance measurements were used in different concentrations of binary mixed solvents (DMF and water) at different temperatures, 293.15, 303.15, 313.15 and 323.15 K. A comparison between association thermodynamic parameter data such as association constants (K A), degree of dissociation (α), free energies of association (ΔG A), enthalpies of association (ΔH A) and entropies of association (ΔS A) in the case of using the two ligands was done. Different calculated thermodynamic parameters indicate that the association is more favorable with 4,6-diacetylresorcinol as a ligand than 4,6-bis(1-hydrazonoethyl)benzene-1,3-diol due to the large size of 6-bis(1-hydrazonoethyl)benzene-1,3-diol.
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Affiliation(s)
- Sameh G Sanad
- 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
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4
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Hassan AM, Said AO, Heakal BH, Younis A, Aboulthana WM, Mady MF. Green Synthesis, Characterization, Antimicrobial and Anticancer Screening of New Metal Complexes Incorporating Schiff Base. ACS OMEGA 2022; 7:32418-32431. [PMID: 36120022 PMCID: PMC9475620 DOI: 10.1021/acsomega.2c03911] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Accepted: 08/16/2022] [Indexed: 06/15/2023]
Abstract
A Schiff base ligand of o-vanillin and 4-aminoazobenzene and its transition metal complexes of Ni(II), Co(II), Zn(II), Cu(II), Mn(II), and Zr(IV) were prepared under microwave irradiation as a green approach compared to the conventional method. The structures of new compounds have been characterized and elucidated via elemental and spectroscopic analyses. In addition, magnetic susceptibility, electron spin resonance, and electronic spectra of the synthesized complexes explained their geometrical structures. The thermal stability of Cu(II), Zn(II), and Zr(IV) complexes was studied by thermo-gravimetric analyses (TGA). Coats-Redfern and Horowitz-Metzger equations were used to calculate the thermal and dehydration decomposition activities of proposed structures kinetically. Surface morphologies of the solid compounds were imaged by scanning electron microscopy (SEM). The particle size of prepared complexes was measured by using a particle size analyzer at a diffraction angle of 10.9°. The geometry structures of the synthesized compounds were verified utilizing electronic spectra, ESR spectrum, and magnetic moment value. The newly synthesized compounds were screened for antimicrobial activity. Also, the anticancer activity of the free Schiff base ligand and its metal complexes were studied against two cell lines: human colon (HCT-116) and human liver cancer cells (HepG-2). The obtained results showed that the Cu(II) complex displayed the highest cytotoxic activity (IC50 = 18 and 22 μg/mL for HepG-2 and HCT, respectively) compared to the free Schiff base ligand.
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Affiliation(s)
- Ali M. Hassan
- Chemistry
Department, Faculty of Science, Al-Azhar
University, Nasr City 11884, Egypt
| | - Ahmed O. Said
- Senior
researcher chemist, Greater Cairo Water
Company, Cairo 11047, Egypt
| | - Bassem H. Heakal
- Research
Laboratory, Cairo Oil Refining Company, Mostorod 11757, Kaliobia, Egypt
| | - Ahmed Younis
- Department
of Green Chemistry, National Research Centre, Cairo 12622, Egypt
| | - Wael M. Aboulthana
- Biochemistry
Department, Biotechnology Research Institute, National Research Centre, Dokki, 12622 Giza, Egypt
| | - Mohamed F. Mady
- Department
of Green Chemistry, National Research Centre, Cairo 12622, Egypt
- Department
of Chemistry, Bioscience and Environmental Engineering, Faculty of
Science and Technology, University of Stavanger, N-4036 Stavanger, Norway
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5
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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] [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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6
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Thermal and spectroscopic studies of some metal complexes with a new enaminone ligand 3-chloro-4-((4-methoxyphenyl)amino)pent-3-en-2-one and their investigation as anti-urease and cytotoxic potential drugs. ARAB J CHEM 2022. [DOI: 10.1016/j.arabjc.2021.103640] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
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7
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Samy F, Shebl M. Co (II), Ni (II) and Cu (II) complexes of 4,6‐bis(2‐hydroxynaphthalen‐1‐yl)methyl‐ene)hydrazono)ethyl)benzene‐1,3‐diol: Synthesis, spectroscopic, biological and theoretical studies. Appl Organomet Chem 2022. [DOI: 10.1002/aoc.6650] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Fatma Samy
- Department of Chemistry, Faculty of Education Ain Shams University Cairo Egypt
| | - Magdy Shebl
- Department of Chemistry, Faculty of Education Ain Shams University Cairo Egypt
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8
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Al‐abbasi AA, Tahir MIM, Kayed SF, Kassim MB. Synthesis, characterization and biological activities of mixed ligand oxovanadium (IV) complexes derived from
N
,
N
‐diethyl‐
N
′‐
para
‐substituted‐benzoylthiourea and hydrotris(3,5‐dimethylpyrazolyl)borate. Appl Organomet Chem 2022. [DOI: 10.1002/aoc.6607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Aisha A. Al‐abbasi
- School of Chemical Sciences & Food Technology Faculty of Science & Technology, Universiti Kebangsaan Malaysia Bangi Selangor Malaysia
- Chemistry Department, Faculty of science/Sebha University Libya
| | | | - Safa Faris Kayed
- Department of Chemistry College of Science and Humanities in Al‐Kharj, Prince Sattam bin Abdulaziz University Al‐kharj Saudi Arabia
| | - Mohammad B. Kassim
- School of Chemical Sciences & Food Technology Faculty of Science & Technology, Universiti Kebangsaan Malaysia Bangi Selangor Malaysia
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9
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Boopalan S, Antony A, Loyid NS, Vijaikanth V, Murugan S. Synthesis, characterization, X-ray crystal structures and antibacterial properties of cobaloximes with aniline based ligands containing acid functionality. INORG NANO-MET CHEM 2022. [DOI: 10.1080/24701556.2021.2025076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- S. Boopalan
- Department of Applied Chemistry, Karunya Institute of Technology and Sciences, Coimbatore, Tamil Nadu, India
| | - Aneesha Antony
- Department of Applied Chemistry, Karunya Institute of Technology and Sciences, Coimbatore, Tamil Nadu, India
| | - Nienu Susan Loyid
- Department of Biotechnology, Karunya Institute of Technology and Sciences, Coimbatore, Tamil Nadu, India
| | - V. Vijaikanth
- Department of Applied Chemistry, Karunya Institute of Technology and Sciences, Coimbatore, Tamil Nadu, India
| | - S. Murugan
- Department of Biotechnology, Karunya Institute of Technology and Sciences, Coimbatore, Tamil Nadu, India
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10
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Abdel Halim S, Shebl M. Synthesis, spectral, structural, DFT and NLO studies of cerium(III) and thorium(IV) complexes of 1-(5-(1-(2-aminophenylimino)ethyl)-2,4-dihydroxyphenyl)ethanone. J COORD CHEM 2021. [DOI: 10.1080/00958972.2021.2020259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Shimaa Abdel Halim
- Department of Chemistry, Faculty of Education, Ain Shams University, Cairo, Egypt
| | - Magdy Shebl
- Department of Chemistry, Faculty of Education, Ain Shams University, Cairo, Egypt
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11
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Samy F, Taha A, Omar FM. New solvatochromic complexes of 1,2‐bis[(5,6‐diphenyl‐1,2,4‐triazin3‐yl)hydrazinylidene‐methyl]benzene: Synthesis, spectroscopic, biological, docking, and theoretical studies. Appl Organomet Chem 2021. [DOI: 10.1002/aoc.6375] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Fatma Samy
- Department of Chemistry, Faculty of Education Ain Shams University Cairo Egypt
| | - Ali Taha
- Department of Chemistry, Faculty of Education Ain Shams University Cairo Egypt
| | - Fouz M. Omar
- Department of Chemistry, Faculty of Education Ain Shams University Cairo Egypt
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12
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Santiago PHDO, Duarte EDA, Nascimento ÉCM, Martins JBL, Castro MS, Gatto CC. A binuclear copper(II) complex based on hydrazone ligand: Characterization, molecular docking, and theoretical and antimicrobial investigation. Appl Organomet Chem 2021. [DOI: 10.1002/aoc.6461] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Pedro H. de O. Santiago
- Laboratory of Inorganic Synthesis and Crystallography University of Brasilia (IQ‐UnB), Campus Universitário Darcy Ribeiro Brasília Brazil
| | - Eduardo de A. Duarte
- Laboratory of Inorganic Synthesis and Crystallography University of Brasilia (IQ‐UnB), Campus Universitário Darcy Ribeiro Brasília Brazil
| | - Érica C. M. Nascimento
- Laboratory of Computational Chemistry University of Brasilia (IQ‐UnB), Campus Universitário Darcy Ribeiro Brasília Brazil
| | - João B. L. Martins
- Laboratory of Computational Chemistry University of Brasilia (IQ‐UnB), Campus Universitário Darcy Ribeiro Brasília Brazil
| | - Mariana S. Castro
- Laboratory of Toxinology, Institute of Biology University of Brasília, Campus Universitário Darcy Ribeiro Brasília Brazil
| | - Claudia C. Gatto
- Laboratory of Inorganic Synthesis and Crystallography University of Brasilia (IQ‐UnB), Campus Universitário Darcy Ribeiro Brasília Brazil
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13
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Structural, theoretical and biological activity of mono and binuclear nickel(II) complexes with symmetrical and asymmetrical 4,6-diacetylresorcinol-dithiocarbazate ligands. J Inorg Biochem 2021; 224:111559. [PMID: 34390890 DOI: 10.1016/j.jinorgbio.2021.111559] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Revised: 07/19/2021] [Accepted: 07/29/2021] [Indexed: 01/20/2023]
Abstract
The present work reports the synthesis and a structural study of two novel dithiocarbazate, the 4,6-diacetylresorcinol-S-benzyldithiocarbazate (H3L1) and the 4,6-diacetylresorcinol-bis(S-benzyldithiocarbazate) (H4L2), and their Ni(II) complexes, [Ni(HL1)(Py)] (1) and [Ni2(L2)(PPh3)2] (2). Single crystal X-ray analyzes reveal mono and binuclear complexes and the metal centers with distorted square planar geometry. The analyses of the Hirshfeld surface and fingerprints plots revealed intermolecular contacts attributed to the H···H and C···H/H···C bonds. The Density Functional Theory (DFT), with the B3LYP functional and 6-311-G(d,p)/LanL2DZ basis sets, was employed to optimize the geometries of synthesized compounds. From the resulting geometries, the highest occupied and lowest unoccupied molecular orbital maps (HOMO-LUMO), orbital energy gap, electron localization function (ELF), electron density, natural bond orbital (NBO) analysis, and complexation of the ligands with Ni(II) were calculated supporting the experimental data. The ESI (+)-MS/MS data indicated the presence in solution of the characteristic fragmentation with the [H3L1]+ and [H4L2]+ molecular ions for the ligands. The pharmacological potential of the dithiocarbazate ligands and their Ni(II) complexes were evaluated in vitro against MDA-MB-231 human breast cancer cells. A remarkable cytotoxic activity was observed, more evident for free ligands than complexes at low concentrations; however, this latter showed a better dose-response pattern, being more attractive in terms of pharmacokinetics and therapeutic window.
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14
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Refat MS, Bayazeed A, Katouah H, Shah R, Morad M, Abualnaja M, Alsaigh S, Saad F, El-Metwaly N. In-silico studies for kinetin hormone and its alkaline earth metal ion complexes as anti-aging cosmetics; synthesis, characterization and ability for controlling collagen-inhibitors. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130041] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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15
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Refat MS, Sedayo AA, Sayqal A, Alharbi A, Katouah HA, Abumelha HM, Alzahrani S, Alkhatib F, Althagafi I, El-Metwaly N. Aurintricarboxylic acid and its metal ion complexes in comparative virtual screening versus Lopinavir and Hydroxychloroquine in fighting COVID-19 pandemic: Synthesis and characterization. INORG CHEM COMMUN 2021; 126:108472. [PMID: 33531865 PMCID: PMC7843113 DOI: 10.1016/j.inoche.2021.108472] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 01/14/2021] [Accepted: 01/16/2021] [Indexed: 11/21/2022]
Abstract
The salt of Aurintricarboxylic acid (ATA) was utilized in this study to synthesize new alkaline earth metal ion complexes. The analytical results proposed the isolation of mononuclear (Sr+2&Ba+2) and binuclear complexes (Mg+2&Ca+2). These complexes were analyzed by available analytical and spectral techniques. The tetrahedral geometry was suggested for all complexes (SP3) through bidentate binding mode of ligand with each central atom. UV-Vis spectra reveal the influence of L → M charge transfer and the estimated optical band gap mostly appeared close to that for known semiconductors. XRD, SEM and TEM studies were executed for new complexes and reflects the nano-crystallinity and homogeneous morphology. The structural forms of ATA and its complexes were optimized by DFT/B3LYP under 6-31G and LANL2DZ basis sets. The output files (log, chk &fchk) were visualized on program screen and according to numbering scheme, many physical features were obtained. It is worthy to note that, a virtual simulation for the inhibition affinity towards COVID-19 proteins as proactive study before the actual application, was done for ATA and its complexes. This was done in addition to drugs currently applied in curing (Hydroxychloroquine & Lopinavir), for comparison and recommendation. Drug-likeness parameters were obtained to evaluate the optimal pharmacokinetics to ensure efficacy. Furthermore, simulated inhibition for COVID-19 cell-growth, was conducted by MOE-docking module. The negative allosteric binding mode represents good inhibitory behavior of ATA, Ba(II)-ATA complex and Lopinavir only. All interaction outcomes of Hydroxychloroquine drug reflect unsuitability of this drug in treating COVID-19. On the other hand, there is optimism for ATA and Lopinvir behaviors in controlling COVID-19 proliferation.
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Affiliation(s)
- Moamen S Refat
- Department of Chemistry, Collage of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| | - Anas A Sedayo
- Department of X-ray, Maternity and Children Hospital, Ministry of Health, Makkah, Saudi Arabia
| | - Ali Sayqal
- Department of Chemistry, Faculty of Applied Science, Umm Al-Qura University, Makkah, Saudi Arabia
| | - Arwa Alharbi
- Department of Chemistry, Faculty of Applied Science, Umm Al-Qura University, Makkah, Saudi Arabia
| | - Hanadi A Katouah
- Department of Chemistry, Faculty of Applied Science, Umm Al-Qura University, Makkah, Saudi Arabia
| | - Hana M Abumelha
- Department of Chemistry, Faculty of Science, Princess Nourah Bint Abdulrahman University, Riyadh, Saudi Arabia
| | - Seraj Alzahrani
- Department of Chemistry, College of Science, Taibah University, Saudi Arabia
| | - Fatmah Alkhatib
- Department of Chemistry, Faculty of Applied Science, Umm Al-Qura University, Makkah, Saudi Arabia
| | - Ismail Althagafi
- Department of Chemistry, Faculty of Applied Science, Umm Al-Qura University, Makkah, Saudi Arabia
| | - Nashwa El-Metwaly
- Department of Chemistry, Faculty of Applied Science, Umm Al-Qura University, Makkah, Saudi Arabia
- Department of Chemistry, Faculty of Science, Mansoura University, Mansoura, Egypt
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16
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Ibrahim MA, Emara AA, Taha A, Adly OM, Nabeel A, Salah N. Binary and ternary copper(II) complexes with 6-ethyl-4-hydroxy-2,5-dioxo-5,6-dihydro-2H-pyrano[3,2-c]quinoline-3-carboxaldehyde: Synthesis, spectral, thermal, molecular modeling, antimicrobial and antitumor studies. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2020.129358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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17
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Samy F, Omar F. Synthesis, characterization, antitumor activity, molecular modeling and docking of new ligand, (2,5-pyrrole)-bis(5,6-diphenyl-[1,2,4]-triazin-3-yl)hydrazone and its complexes. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.128910] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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18
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Xu X, Feng T, Feng S, Dong W. Influence of structural variation of salamo‐based ligand on supramolecular architectures, Hirshfeld analyses, and fluorescence properties of new tetranuclear Ni
II
complexes. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.6057] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Xin Xu
- School of Chemical and Biological Engineering Lanzhou Jiaotong University Lanzhou Gansu 730070 China
| | - Tao Feng
- School of Chemical and Biological Engineering Lanzhou Jiaotong University Lanzhou Gansu 730070 China
| | - Shan‐shan Feng
- School of Chemical and Biological Engineering Lanzhou Jiaotong University Lanzhou Gansu 730070 China
| | - Wen‐Kui Dong
- School of Chemical and Biological Engineering Lanzhou Jiaotong University Lanzhou Gansu 730070 China
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19
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Synthesis, theoretical calculation and anticancer activity of 4,6-diacetylresorcinol-dithiocarbazates and their Copper(II) complexes. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.128083] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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20
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Shebl M, Saleh AA, Khalil SME, Dawy M, Ali AAM. Synthesis, spectral, magnetic, DFT calculations, antimicrobial studies and phenoxazinone synthase biomimetic catalytic activity of new binary and ternary Cu(II), Ni(II) and Co(II) complexes of a tridentate ONO hydrazone ligand. INORG NANO-MET CHEM 2020. [DOI: 10.1080/24701556.2020.1770794] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Magdy Shebl
- Faculty of Education, Department of Chemistry, Ain Shams University, Cairo, Egypt
| | - Akila A. Saleh
- Faculty of Education, Department of Chemistry, Ain Shams University, Cairo, Egypt
| | - Saied M. E. Khalil
- Faculty of Education, Department of Chemistry, Ain Shams University, Cairo, Egypt
| | - Magdah Dawy
- Department of Physical Chemistry, National Research Centre, Dokki, Egypt
| | - Amira A. M. Ali
- Faculty of Education, Department of Chemistry, Ain Shams University, Cairo, Egypt
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21
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Adam MSS, Ahmed MSM, El‐Hady OM, Shaaban S. Bis‐dioxomolybdenum (VI) oxalyldihydrazone complexes: Synthesis, characterization, DFT studies, catalytic epoxidation potential, molecular modeling and biological evaluations. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.5573] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Mohamed Shaker S. Adam
- Department of Chemistry, College of ScienceKing Faisal University P.O. Box 380 Al‐Hofuf Al‐Ahsa 31982 Saudi Arabia
- Chemistry Department, Faculty of ScienceSohag University Sohag 82534 Egypt
| | - Mohamed S. Mohamed Ahmed
- Department of Chemistry, College of ScienceKing Faisal University P.O. Box 380 Al‐Hofuf Al‐Ahsa 31982 Saudi Arabia
- Chemistry Department, Faculty of ScienceCairo University Giza Egypt
| | - Omar M. El‐Hady
- Chemistry Department, Faculty of ScienceSohag University Sohag 82534 Egypt
| | - Saad Shaaban
- Department of Chemistry, College of ScienceKing Faisal University P.O. Box 380 Al‐Hofuf Al‐Ahsa 31982 Saudi Arabia
- Chemistry Department, Faculty of ScienceMansoura University Mansoura Egypt
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22
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Samy F, Shebl M. Synthesis, spectroscopic, biological, and theoretical studies of new complexes from ( E)‐3‐(2‐(5, 6‐ diphenyl‐1,2,4‐ triazin‐3‐ yl)hydrazono)butan‐2‐ one oxime. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.5502] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Fatma Samy
- Department of Chemistry, Faculty of EducationAin Shams University Roxy Cairo 11341 Egypt
| | - Magdy Shebl
- Department of Chemistry, Faculty of EducationAin Shams University Roxy Cairo 11341 Egypt
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23
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Fouad R. Synthesis and Fundamental Characterization of Diverse Properties of Biocompatible Cd (II) Phosphor Complex for Cytotoxic Activity and Latent Fingerprint Detection. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.5497] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- R. Fouad
- Department of Chemistry, Faculty of EducationAin Shams University Roxy 11711 Cairo, Egypt
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24
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Zülfikaroğlu A, Yüksektepe Ataol Ç, Çelikoğlu E, Çelikoğlu U, İdil Ö. New Cu(II), Co(III) and Ni(II) metal complexes based on ONO donor tridentate hydrazone: Synthesis, structural characterization, and investigation of some biological properties. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2019.127012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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25
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Liu C, An X, Cui Y, Xie K, Dong W. Novel structurally characterized hetero‐bimetallic [Zn(II)
2
M(II)] (M = Ca and Sr)
bis
(salamo)‐type complexes: DFT calculation, Hirshfeld analyses, antimicrobial and fluorescent properties. Appl Organomet Chem 2019. [DOI: 10.1002/aoc.5272] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Chang Liu
- School of Chemical and Biological EngineeringLanzhou Jiaotong University Lanzhou China
| | - Xiao‐Xin An
- School of Chemical and Biological EngineeringLanzhou Jiaotong University Lanzhou China
| | - Yong‐Fan Cui
- School of Chemical and Biological EngineeringLanzhou Jiaotong University Lanzhou China
| | - Ke‐Feng Xie
- School of Chemical and Biological EngineeringLanzhou Jiaotong University Lanzhou China
| | - Wen‐Kui Dong
- School of Chemical and Biological EngineeringLanzhou Jiaotong University Lanzhou China
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26
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Sanad SG, Shebl M. Conductance studies on complex formation of nano Cu(NO3)2.2.5H2O with 4,6-diacetylresorcinol in mixed solvents. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.111602] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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27
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Binuclear oxovanadium(IV), cerium(III) and dioxouranium(VI) nano complexes of a bis(bidentate) ligand: Synthesis, spectroscopic, thermal, DFT calculations and biological studies. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2019.05.063] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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28
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Shebl M, Khalil SM, Kishk MA, El‐Mekkawi DM, Saif M. New less toxic zeolite‐encapsulated Cu(II) complex nanomaterial for dual applications in biomedical field and wastewater remediation. Appl Organomet Chem 2019. [DOI: 10.1002/aoc.5147] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Magdy Shebl
- Department of Chemistry, Faculty of EducationAin Shams University Roxy Cairo Egypt
| | - Saied M.E. Khalil
- Department of Chemistry, Faculty of EducationAin Shams University Roxy Cairo Egypt
| | - Mona A.A. Kishk
- Department of Chemistry, Faculty of EducationAin Shams University Roxy Cairo Egypt
| | - Doaa M. El‐Mekkawi
- Physical Chemistry DepartmentNational Research Centre NRC, 33 El Bohouth St., Dokki Giza PO 12622 Egypt
| | - M. Saif
- Department of Chemistry, Faculty of EducationAin Shams University Roxy Cairo Egypt
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29
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El-Shafiy H. Synthesis, spectral, photoluminescence, DFT studies and bioassay of new Fe(III), Co(II), Ni(II), Cu(II) and Zn(II) complexes of 1-ethyl-4-hydroxy-3-(nitroacetyl) quinolin-2(1H)-one. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2018.04.023] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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30
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El-Shafiy H, Shebl M. Oxovanadium(IV), cerium(III), thorium(IV) and dioxouranium(VI) complexes of 1-ethyl-4-hydroxy-3-(nitroacetyl)quinolin-2(1H)-one: Synthesis, spectral, thermal, fluorescence, DFT calculations, antimicrobial and antitumor studies. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2017.11.081] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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31
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Structural variety in copper(II) complexes of 3-formylchromone: Synthesis, spectral, thermal, molecular modeling and biological studies. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2017.06.085] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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32
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Shebl M, Adly OM, Abdelrhman EM, El-Shetary B. Binary and ternary copper(II) complexes of a new Schiff base ligand derived from 4-acetyl-5,6-diphenyl-3(2H)-pyridazinone: Synthesis, spectral, thermal, antimicrobial and antitumor studies. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2017.05.064] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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33
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Structural variety of mono- and binuclear transition metal complexes of 3-[(2-hydroxy-benzylidene)-hydrazono]-1-(2-hydroxyphenyl)-butan-1-one: Synthesis, spectral, thermal, molecular modeling, antimicrobial and antitumor studies. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2017.01.012] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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34
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Coordination behavior of new bis(tridentate ONO, ONS and ONN) donor hydrazones towards some transition metal ions: Synthesis, spectral, thermal, antimicrobial and antitumor studies. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2016.08.056] [Citation(s) in RCA: 70] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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35
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New non-toxic transition metal nanocomplexes and Zn complex-silica xerogel nanohybrid: Synthesis, spectral studies, antibacterial, and antitumor activities. J Mol Struct 2016. [DOI: 10.1016/j.molstruc.2016.04.037] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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36
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Shebl M. Mononuclear, homo- and hetero-binuclear complexes of 1-(5-(1-(2-aminophenylimino)ethyl)-2,4-dihydroxyphenyl)ethanone: synthesis, magnetic, spectral, antimicrobial, antioxidant, and antitumor studies. J COORD CHEM 2016. [DOI: 10.1080/00958972.2015.1116688] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Magdy Shebl
- Faculty of Education, Department of Chemistry, Ain Shams University, Cairo, Egypt
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37
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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. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 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] [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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38
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Shebl M, Khalil SME. Synthesis, spectral, X-ray diffraction, antimicrobial studies, and DNA binding properties of binary and ternary complexes of pentadentate N2O3 carbohydrazone ligands. MONATSHEFTE FUR CHEMIE 2014. [DOI: 10.1007/s00706-014-1302-x] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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39
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Shebl M, El-ghamry MA, Khalil SME, Kishk MAA. Mono- and binuclear copper(II) complexes of new hydrazone ligands derived from 4,6-diacetylresorcinol: Synthesis, spectral studies and antimicrobial activity. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 126:232-241. [PMID: 24607473 DOI: 10.1016/j.saa.2014.02.014] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2014] [Revised: 01/29/2014] [Accepted: 02/09/2014] [Indexed: 06/03/2023]
Abstract
Two new hydrazone ligands, H2L(1) and H2L(2), were synthesized by the condensation of 4,6-diacetylresorcinol with 3-hydrazino-5,6-diphenyl-1,2,4-triazine and isatin monohydrazone, respectively. The structures of the ligands were elucidated by elemental analyses, IR, (1)H NMR, electronic and mass spectra. Reactions of the ligands with several copper(II) salts, including AcO(-), NO3(-), SO4(2-), Cl(-) and Br(-) afforded mono- and binuclear metal complexes. Also, the ligands were allowed to react with Cu(II) ion in the presence of a secondary ligand (L') [N,O-donor; 8-hydroxyquinoline, N,N-donor; 1,10-phenanthroline or O,O-donor; benzoylacetone]. Characterization and structure elucidation of the prepared complexes were achieved by elemental and thermal analyses, IR, electronic, mass and ESR spectra as well as conductivity and magnetic susceptibility measurements. The ESR spin Hamiltonian parameters of some complexes were calculated. The spectroscopic data showed that the H2L(1) ligand acts as a neutral or monobasic tridentate ligand while the H2L(2) ligand acts as a bis(monobasic tridentate) ligand. The coordination sites with the copper(II) ion are phenolic oxygen, azomethine nitrogen and triazinic nitrogen (H2L(1) ligand) or isatinic oxygen (H2L(2) ligand). The metal complexes exhibited octahedral and square planar geometrical arrangements depending on the nature of the anion. The ligands and some metal complexes showed antimicrobial activity.
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Affiliation(s)
- Magdy Shebl
- Department of Chemistry, Faculty of Education, Ain Shams University, Roxy, Cairo, Egypt.
| | - Mosad A El-ghamry
- Department of Chemistry, Faculty of Education, Ain Shams University, Roxy, Cairo, Egypt
| | - Saied M E Khalil
- Department of Chemistry, Faculty of Education, Ain Shams University, Roxy, Cairo, Egypt
| | - Mona A A Kishk
- Department of Chemistry, Faculty of Education, Ain Shams University, Roxy, Cairo, Egypt
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40
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Shebl M. Synthesis, spectroscopic characterization and antimicrobial activity of binuclear metal complexes of a new asymmetrical Schiff base ligand: DNA binding affinity of copper(II) complexes. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 117:127-137. [PMID: 23988527 DOI: 10.1016/j.saa.2013.07.107] [Citation(s) in RCA: 96] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2013] [Revised: 07/23/2013] [Accepted: 07/31/2013] [Indexed: 06/02/2023]
Abstract
The 1:1 condensation of o-acetoacetylphenol and 1,2-diaminopropane under condition of high dilution gives the mono-condensed Schiff base, (E)-3-(1-aminopropan-2-ylimino)-1-(2-hydroxyphenyl)butan-1-one. The mono-condensed Schiff base has been used for further condensation with isatin to obtain the new asymmetrical dicompartmental Schiff base ligand, (E)-3-(2-((E)-4-(2-hydroxyphenyl)-4-oxobutan-2-ylideneamino) propylimino)indolin-2-one (H3L) with a N2O3 donor set. Reactions of the ligand with metal salts give a series of new binuclear complexes. The ligand and its metal complexes were characterized by elemental analyses, IR, (1)H and (13)C NMR, electronic, ESR and mass spectra, conductivity and magnetic susceptibility measurements as well as thermal analyses. The analytical and spectroscopic tools showed that the complexes can be formulated as: [(HL)(VO)2(SO4)(H2O)]·4H2O, [(HL)Fe2Cl4(H2O)3]·EtOH, [(HL)Fe2(ox)Cl2(H2O)3]·2H2O, [(L)M2(OAc)(H2O)m]·nH2O; M=Co, Ni or Cu, m=4, 0 and n=2, 3, [(HL)Cu2Cl]Cl·6H2O and [(L)(UO2)2(OAc)(H2O)3]·6H2O. The metal complexes exhibited octahedral geometrical arrangements except copper complexes that exhibited tetrahedral geometries and uranyl complex in which the metal ion is octa-coordinated. The Schiff base and its metal complexes were evaluated for antimicrobial activity against Gram positive bacteria (Staphylococcus aureus), Gram negative bacteria (Escherichia coli) and fungi (Candida albicans and Aspergillus flavus). The ligand and some of its complexes were found to be biologically active. The DNA-binding properties of the copper complexes (6 and 7) have been investigated by electronic absorption, fluorescence and viscosity measurements. The results obtained indicate that these complexes bind to DNA via an intercalation binding mode with an intrinsic binding constant, Kb of 1.34×10(4) and 2.5×10(4) M(-1), respectively.
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Affiliation(s)
- Magdy Shebl
- Chemistry Department, Faculty of Education, Ain Shams University, Roxy, Cairo 11341, Egypt.
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41
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Adly OM, Taha A, Fahmy SA. Synthesis, spectral characterization, molecular modeling and antimicrobial activity of new potentially N2O2 Schiff base complexes. J Mol Struct 2013. [DOI: 10.1016/j.molstruc.2013.09.037] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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42
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Shebl M, Ibrahim MA, Khalil SME, Stefan SL, Habib H. Binary and ternary copper(II) complexes of a tridentate ONS ligand derived from 2-aminochromone-3 carboxaldehyde and thiosemicarbazide: synthesis, spectral studies and antimicrobial activity. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2013; 115:399-408. [PMID: 23860404 DOI: 10.1016/j.saa.2013.06.075] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2013] [Revised: 06/12/2013] [Accepted: 06/19/2013] [Indexed: 06/02/2023]
Abstract
A tridentate ONS donor ligand, HL, was synthesized by the condensation of 2-aminochromone-3-carboxaldehyde with thiosemicarbazide. The structure of the ligand was elucidated by elemental analyses, IR, (1)H and (13)C NMR, electronic and mass spectra. Reaction of the ligand with several copper(II) salts, including AcO(-), NO3(-), SO4(2-), Cl(-), Br(-) and ClO4(-) afforded different metal complexes that reflect the non-coordinating or weakly coordinating power of the ClO4(-) and Br(-) anions as compared to the strongly coordinating power of AcO(-), SO4(2-), Cl(-) and NO3(-) anions. Also, the ligand was allowed to react with Cu(II) ion in the presence of a secondary ligand (L') [N,O-donor; 8-hydroxyquinoline or N,N-donor; 1,10-phenanthroline]. Characterization and structure elucidation of the prepared complexes were achieved by elemental and thermal analyses, IR, electronic, mass and EPR spectra as well as conductivity and magnetic susceptibility measurements. The EPR spin Hamiltonian parameters of some complexes were calculated. The metal complexes exhibited octahedral and square planar geometrical arrangements depending on the nature of the anion. The ligand and most of its metal complexes showed antibacterial 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).
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Affiliation(s)
- Magdy Shebl
- Department of Chemistry, Faculty of Education, Ain Shams University, Roxy, Cairo, Egypt.
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43
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Shebl M, Khalil SME, Taha A, Mahdi MAN. Synthesis, spectroscopic studies, molecular modeling and antimicrobial activity of binuclear Co(II) and Cu(II) complexes of 4,6-diacetylresorcinol. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2013; 113:356-366. [PMID: 23743042 DOI: 10.1016/j.saa.2013.04.131] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2013] [Revised: 03/19/2013] [Accepted: 04/30/2013] [Indexed: 06/02/2023]
Abstract
Reactions of 4,6-diacetylresorcinol with different cobalt(II) and copper(II) salts viz., OAc(-), Cl(-), NO3(-) and SO4(2-), yielded a new series of binuclear metal complexes. Reactions of the ligand with these metal ions in the presence of a secondary ligand (L') [O,O-donor; acetylacetone, N,O-donor; 8-hydroxyquinoline or N,N-donor; 1,10-phenanthroline and N,N,N',N'-tetramethylethylenediamine] in 1:2:2 (L:M:L') molar ratio yielded mixed-ligand complexes with different molar ratios. The metal complexes were characterized by elemental and thermal analyses, IR, electronic, ESR and mass spectra as well as conductivity and magnetic susceptibility measurements. The analytical and spectroscopic data suggested that the H2L ligand behaves as a neutral, monobasic or dibasic tetradentate ligand, depending on the type of the anion and secondary ligand used, through the two phenolic and two carbonyl groups. Electronic spectra, magnetic and conductivity measurements showed that all complexes are octahedral with non-electrolytic nature. The profile of ESR spectra of copper(II) complexes suggested the octahedral geometry and the spin Hamiltonian parameters of the complexes were calculated and discussed. Molecular orbital calculations were performed for metal complexes using Hyperchem 7.52 program on the bases of PM3 level and the results correlated with the experimental data. The free ligand and some of its metal complexes showed antimicrobial activity towards some of Gram-positive and Gram-negative bacteria, yeast (Candida albicans) and fungus (Aspergillus fumigatus).
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Affiliation(s)
- Magdy Shebl
- Department of Chemistry, Faculty of Education, Ain Shams University, Roxy, Cairo 11341, Egypt.
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