1
|
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] [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.
Collapse
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
| |
Collapse
|
2
|
Synthesis Metal-Organic Framework (MOFs) Cr-PTC-HIna Modulated Isonicotinic Acid for Methylene Blue Photocatalytic Degradation. BULLETIN OF CHEMICAL REACTION ENGINEERING & CATALYSIS 2022. [DOI: 10.9767/bcrec.17.2.13930.383-393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A novel responsive visible light Cr-based MOF, Cr-PTC-HIna, was synthesized using the solvothermal method. Cr-PTC-HIna peaks were observed at 2θ = 9.04°, 12.71°, 14.88°, 25,48°, 27.72°, 28.97°, and 43.60° with a crystal size of 21 nm. Band gap energy achieved from the Cr-PTC HIna was 2.05 eV. Scanning Electron Microscope (SEM) analysis obtained a 3D structural morphology of MOFs Cr-PTC-HIna with a cylindrical tube shape and a particle size of 251.45 nm. Cr-PTC-HIna gave the optimum methylene blue degradation at pH of 7 under 250 watts mercury lamp irradiation for 180 minutes with degradation capacity of 95.40 mg/g. Electron holes and hydroxyl radicals were found as the dominant species contributing to methylene blue degradation. Copyright © 2022 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).
Collapse
|
3
|
Olayemi VT, Tella AC, Adekola FA, Clayton HS, Oladipo AC, Mehlana G, Ogunlaja AS, Oluwafemi OS, Ogar JO, Argent SP, Mokaya R. A Co-Crystallised Cobalt(II) Cluster of Pyridinedicarboxylic Acid (PDC) as a Luminescent Material for Selective Sensing of Methanol. J Fluoresc 2021; 31:1177-1190. [PMID: 34032972 DOI: 10.1007/s10895-021-02746-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Accepted: 05/04/2021] [Indexed: 11/30/2022]
Abstract
A luminescent Cobalt(II) co-crystal [Co13(PDC)16(H2O)24.7H2O] 1 (where H2PDC = 2,6-pyridinedicarboxylic acid) have been prepared by oven-heating and slow evaporation of solvent. Single crystal X-ray diffraction (SCXRD) analysis revealed that 1 is a mixture of complexes that crystallizes in the triclinic space group P-1 and the geometry around the Co(II) ions is octahedral. The structure is extensively imbued with hydrogen bonding that helps in stabilizing the complex. Thermogravimetric analysis indicates that 1 is thermally stable up to 364 οC. The luminescence properties of 1 revealed a strong emission centered at 437 nm (λex = 345 nm) assigned to ligand to metal charge transfer (LMCT). The luminescence sensing of 1 towards volatile organic molecules were also examined. However, 1 displayed a turn off towards methanol compared to other molecules with high quenching efficiency and low limit of detection (3.5 × 10-4 vol%). The results show excellent selectively and high sensitivity. Powder X-ray diffraction studies revealed that the structural integrity of the complex was maintained after exposure to methanol vapour. Theoretical studies also revealed small binding energy (-413.2 au) and low energy gap (1.19) for 1-CH3OH adduct.
Collapse
Affiliation(s)
- Victoria T Olayemi
- Department of Chemistry, University of Ilorin, P.M. B 1515, Ilorin, Kwara State, Nigeria
- Department of Chemistry, Faculty of Pure and Applied Sciences, Kwara State University, P.M. B 1530, Malete, Nigeria
| | - Adedibu C Tella
- Department of Chemistry, University of Ilorin, P.M. B 1515, Ilorin, Kwara State, Nigeria.
- Department of Chemistry, University of South Africa, Pretoria, South Africa.
| | - Folahan A Adekola
- Department of Chemistry, University of Ilorin, P.M. B 1515, Ilorin, Kwara State, Nigeria
| | - Hadley S Clayton
- Department of Chemistry, University of South Africa, Pretoria, South Africa
| | - Adetola C Oladipo
- Department of Chemistry, University of Ilorin, P.M. B 1515, Ilorin, Kwara State, Nigeria
- Department of Physical Sciences, Landmark University, Omu-Aran, Kwara State, Nigeria
| | - Gift Mehlana
- Department of Chemical Technology, Faculty of Science and Technology Midlands State University (MSU), Gweru, Zimbabwe
| | - Adeniyi S Ogunlaja
- Department of Chemistry, Nelson Mandela University, P.O. Box 77000, Port Elizabeth, 6031, South Africa
| | - Oluwatobi S Oluwafemi
- Department of Applied Chemistry, University of Johannesburg, Johannesburg, South Africa
| | - Joseph O Ogar
- School of Chemistry, University of Nottingham, NG7 2RD, University Park, Nottingham, UK
| | - Stephen P Argent
- School of Chemistry, University of Nottingham, NG7 2RD, University Park, Nottingham, UK
| | - Robert Mokaya
- School of Chemistry, University of Nottingham, NG7 2RD, University Park, Nottingham, UK
| |
Collapse
|
4
|
Parveen S, Arjmand F, Zhang Q, Ahmad M, Khan A, Toupet L. Molecular docking, DFT and antimicrobial studies of Cu(II) complex as topoisomerase I inhibitor. J Biomol Struct Dyn 2020; 39:2092-2105. [PMID: 32174234 DOI: 10.1080/07391102.2020.1743365] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Herein, we report the synthesis and single crystal X-ray structure of Cu(II)-picolinic acid complex, 1 as a potent topoisomerase I inhibitor. The complex 1 crystallized in the triclinic crystal system with space group P-1. Comparative in vitro binding studies of complex 1 with CT DNA and tRNA were carried out revealing an electrostatic binding mode with higher binding propensity towards tRNA. The intrinsic bonding constant value, Kb was calculated to be 4.36 × 104 and 8.78 × 104 M-1 with CT DNA and tRNA respectively. DNA cleavage activity was carried out with a pBR322 plasmid DNA substrate to ascertain the cleaving ability. Furthermore, Topo-I inhibition assay of complex 1, performed via gel electrophoresis revealed a significant inhibitory effect on the enzyme catalytic activity at a minimum concentration of 15 µM. The DFT studies were carried out to provide better insight in the electronic transitions observed in the absorption spectrum of the complex 1. Molecular docking studies were carried out with DNA, RNA and Topo-I to determine the specific binding preferences at the target site and complement the spectroscopic studies. The antimicrobial potential of complex 1 was screened against E. coli, S. aureus, P. aeruginosa, B. subtilis and C. albicans; and compared with doxycycline, exhibiting an excellent maximum zone of inhibition of 28 mm against E. coli.Communicated by Ramaswamy H. Sarma.
Collapse
Affiliation(s)
- Shazia Parveen
- Chemistry Department, Faculty of Science, Taibah University, Yanbu, Saudi Arabia.,Department of Chemistry, Aligarh Muslim University, Aligarh, India
| | - Farukh Arjmand
- Department of Chemistry, Aligarh Muslim University, Aligarh, India
| | - Qianfan Zhang
- Chemistry Department, Brown University, Providence, RI, USA
| | - Musheer Ahmad
- Department of Applied Chemistry, Aligarh Muslim University, Aligarh, India
| | - Arif Khan
- Department of Chemistry, SCLS, Jamia Hamdard, Delhi, India
| | - Loic Toupet
- Institut de Physique de Rennes, UMR 625, Université de Rennes 1, Rennes Cedex, France
| |
Collapse
|
5
|
Tamer Ö, Avcı D, Atalay Y. A novel Cu(II) Complex of Picolinate and 1,10-Phenanthroline: Preparation, Crystal Structure Determination, Spectroscopic Characterization and Nonlinear Optical Studies. J Inorg Organomet Polym Mater 2017. [DOI: 10.1007/s10904-017-0513-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
|