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BÜYÜKKIDAN N. A Short Review on Structural Concepts of Metal Complexes of Proton Transfer Salts of Pyridine-2-Carboxylic Acid. JOURNAL OF THE TURKISH CHEMICAL SOCIETY, SECTION A: CHEMISTRY 2022. [DOI: 10.18596/jotcsa.1135570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
In this study, a brief review of the proton transfer salts synthesized from the reaction of piperazine with pyridine-2-carboxylic acid and their metal complexes since 2009 was made. The metals in the studied compounds are mostly d-block metals. In complexes, the anionic component of the salt is coordinated to the metal, while the cationic component is present only as a complementary ion in a complex.
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Mostafa GAE, Bakheit A, AlMasoud N, AlRabiah H. Charge Transfer Complexes of Ketotifen with 2,3-Dichloro-5,6-dicyano- p-benzoquinone and 7,7,8,8-Tetracyanoquodimethane: Spectroscopic Characterization Studies. Molecules 2021; 26:molecules26072039. [PMID: 33918481 PMCID: PMC8038309 DOI: 10.3390/molecules26072039] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 03/25/2021] [Accepted: 03/27/2021] [Indexed: 11/16/2022] Open
Abstract
The reactions of ketotifen fumarate (KT) with 2,3-dichloro-5,6-dicyano-p-benzoquinone (DDQ) and 7,7,8,8-tetracyanoquinodimethane (TCNQ) as π acceptors to form charge transfer (CT) complexes were evaluated in this study. Experimental and theoretical approaches, including density function theory (DFT), were used to obtain the comprehensive, reliable, and accurate structure elucidation of the developed CT complexes. The CT complexes (KT-DDQ and KT-TCNQ) were monitored at 485 and 843 nm, respectively, and the calibration curve ranged from 10 to 100 ppm for KT-DDQ and 2.5 to 40 ppm for KT-TCNQ. The spectrophotometric methods were validated for the determination of KT, and the stability of the CT complexes was assessed by studying the corresponding spectroscopic physical parameters. The molar ratio of KT:DDQ and KT:TCNQ was estimated at 1:1 using Job's method, which was compatible with the results obtained using the Benesi-Hildebrand equation. Using these complexes, the quantitative determination of KT in its dosage form was successful.
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Affiliation(s)
- Gamal A. E. Mostafa
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia; (G.A.E.M.); (A.B.)
- Micro-analytical Lab., Applied Organic Chemistry Department, National Research Center, Dokki, Cairo 12622, Egypt
| | - Ahmed Bakheit
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia; (G.A.E.M.); (A.B.)
- Department of Chemistry, Faculty of Science and Technology, El-Neelain University, P.O. Box 12702, Khartoum 11121, Sudan
| | - Najla AlMasoud
- Department of Chemistry, College of Science, Princess Nourah bint Abdulrahman University, Riyadh 11671, Saudi Arabia;
| | - Haitham AlRabiah
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia; (G.A.E.M.); (A.B.)
- Correspondence:
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Issa YM, Abdel-Latif SA, El-Ansary AL, Hassib HB. The synthesis, spectroscopic characterization, DFT/TD-DFT/PCM calculations of the molecular structure and NBO of the novel charge-transfer complexes of pyrazine Schiff base derivatives with aromatic nitro compounds. NEW J CHEM 2021. [DOI: 10.1039/d0nj05397j] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Novel charge-transfer complexes of pyrazine Schiff bases derived from 2-aminopyrazine with benzaldehyde and N-4-dimethylaminobenzaldehyde with some aromatic nitro compounds have been synthesized and characterizes experimentally and confirmed theoretically.
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Affiliation(s)
- Yousry M. Issa
- Chemistry Department
- Faculty of Science
- Cairo University
- Giza
- Egypt
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Yousef TA, Ezzeldin E, Abdel-Aziz HA, Al-Agamy MH, Mostafa GAE. Charge Transfer Complex of Neostigmine with 2,3-Dichloro-5,6-Dicyano-1,4-Benzoquinone: Synthesis, Spectroscopic Characterization, Antimicrobial Activity, and Theoretical Study. Drug Des Devel Ther 2020; 14:4115-4129. [PMID: 33116400 PMCID: PMC7547768 DOI: 10.2147/dddt.s259369] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Accepted: 08/12/2020] [Indexed: 12/26/2022] Open
Abstract
BACKGROUND Electron donor-acceptor interactions are important molecular reactions for the activity of pharmacological compounds. The aim of the study is to develop a charge transfer (CT) complex: synthesis, characterization, antimicrobial activity, and theoretical study. METHOD AND RESULTS A solid CT complex of neostigmine (NSG) with 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ) was synthesized and characterized by infrared spectra, NMR, and UV-visible spectroscopy. The results confirm the formation of a CT complex. The stability of the CT complex between NSG and DDQ in acetonitrile was determined in solution via spectrophotometric measurement, ie, by calculating the formation constant, molar extinction coefficient, and different spectroscopic parameters. The stoichiometry of the formed NSG-DDQ complex was determined using Job's method. The absorption band of the NSG-DDQ complex can be used for the quantification of NSG. CONCLUSION The DFT geometry optimization of NSG, DDQ, and the CT complex and the UV comparative study of both theoretical and experimental structures are presented. The experimental results confirm the charge transfer structure. The bacterial study shows that the NSG-DDQ complex has good antibacterial activity against both Gram-positive and Gram-negative bacteria as well as antifungal activity against Candida albicans.
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Affiliation(s)
- Tarek A Yousef
- College of Science, Chemistry Department, Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh11623, Kingdom of Saudi Arabia
- Department of Toxic and Narcotic Drug, Forensic Medicine, Mansoura Laboratory, Medicolegal Organization, Ministry of Justice, Mansoura, Egypt
| | - Essam Ezzeldin
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh11451, Saudi Arabia
- Bioavailability Laboratory, Central Laboratory, College of Pharmacy, King Saud University, Riyadh11451, Saudi Arabia
| | - Hatem A Abdel-Aziz
- Applied Organic Chemistry Department, National Research Center, Cairo12622, Egypt
| | - Mohamed H Al-Agamy
- Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh11451, Saudi Arabia
- Department of Microbiology and Immunology, Faculty of Pharmacy, Al-Azhar University, Cairo, Egypt
| | - Gamal A E Mostafa
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh11451, Saudi Arabia
- Applied Organic Chemistry Department, National Research Center, Cairo12622, Egypt
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DNA Binding, DFT and Spectroscopic Studies of a Charge Transfer Complex Consisting of a Bioactive Donor 1-(2-Methylbenzyl)piperazine. J SOLUTION CHEM 2020. [DOI: 10.1007/s10953-020-00989-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Shehab OR, Soliman FA, Abdel-Ghani NT, Mansour AM. Spectroscopic investigation of π-acceptors in the determination and photoinduced degradation of Sulfacetamide. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 228:117821. [PMID: 31791911 DOI: 10.1016/j.saa.2019.117821] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2019] [Revised: 11/13/2019] [Accepted: 11/18/2019] [Indexed: 06/10/2023]
Abstract
The presence of expired and unused Sulfacetamide (SA) drug in water led to a global need for the development of effective advanced method for the quantitative analysis and for minimizing its occurrence in the nature. To find new effective photochemical decomposition method close to that obtained by the well-known Fenton reaction, the photodegradation of SA was investigated in presence of dichloro-5,6-dicyano-1,4-benzoquinone (DDQ) and/or other common additives at two different wavelengths (365 and 256 nm). The role of DDQ in the degradation process of SA was evaluated in comparison to the other investigated π-acceptor systems (Chloranilic acid (CHL) and Picric acid (PA)). While the photodegradation process of SA was hardly to proceed in the absence of a catalyst and/or additive, addition of DDQ and NaNO2 to the solution of SA induced decomposition of about 94% of SA within 25 min upon the exposure to light source at 256 nm. On the other hand, SA was quantitatively analyzed by recording the absorbance of its charge transfer (CT) products with DDQ, CHL and PA at a certain wavelength. CHL is preferred with concentrated samples of SA, while PA is recommended for diluted samples of SA. SA → DDQ has a widely range of stability over the pH range of 4.5-12.0. While SA → CHL is stable only in the acidic medium (pH = 4.8-5.6), SA → PA is steady in the basic medium (pH = 7.5-11.0). The nature of the DDQ CT complex was investigated in the solid state. The electronic structures of the complexes were studied by calculating the time dependent density functional theory (TDDFT) spectra.
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Affiliation(s)
- Ola R Shehab
- Chemistry Department, Faculty of Science, Cairo University, Cairo University street, Giza 12613, Egypt
| | - Fatma A Soliman
- Chemistry Department, Faculty of Science, Cairo University, Cairo University street, Giza 12613, Egypt
| | - Nour T Abdel-Ghani
- Chemistry Department, Faculty of Science, Cairo University, Cairo University street, Giza 12613, Egypt.
| | - Ahmed M Mansour
- Chemistry Department, Faculty of Science, Cairo University, Cairo University street, Giza 12613, Egypt.
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Synthesis, characterization and crystal structure of a new organic salt of antidiabetic drug metformin resulting from a proton transfer reaction. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2019.05.040] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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8
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Abbu V, Nampally V, Baindla N, Tigulla P. Stoichiometric, Thermodynamic and Computational DFT Analysis of Charge Transfer Complex of 1-Benzoylpiperazine with 2, 3-Dichloro-5, 6-Dicyano-1, 4-benzoquinone. J SOLUTION CHEM 2019. [DOI: 10.1007/s10953-019-00847-5] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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El-Shafie AS, Khashan AW, Hussein YHA, El-Azazy M. Application of a definitive screening design for the synthesis of a charge-transfer complex of sparfloxacin with tetracyanoethylene: spectroscopic, thermodynamic, kinetics, and DFT computational studies. RSC Adv 2019; 9:24722-24732. [PMID: 35528693 PMCID: PMC9069835 DOI: 10.1039/c9ra03141c] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2019] [Accepted: 07/19/2019] [Indexed: 11/21/2022] Open
Abstract
Herein, a spectrochemical approach was adopted to study the charge-transfer (CT) complexation of sparfloxacin (SFX) with tetracyanoethylene (TCNE). In this study, a three-level design of experiments (DOE) involving a definitive screening design (DSD) was implemented. This is the first effort to operate this new category of design to determine a pharmaceutical compound in its pure form and in formulations. The proposed design allowed the establishment of a regression model that described the relation between the factorial input and the response surface. Moreover, two charge-transfer states (CTSs) were observed at 390 and 464 nm. The DFT calculations conducted using B3LYP/6-31+G showed that SFX had several donation sites (donor, D), whereas TCNE had two acceptor (A) sites. The two states were influenced differently by the experimental conditions as per the findings of the DSD analysis. In general, the diluting solvent had the largest impact. Probability plots, histograms, individual value plots, residual plots as well as analysis of variance (ANOVA) were delineated at the 95.0% confidence interval (CI). A Job's plot showed that a 1 : 1 complex was formed. The results were further confirmed using Benesi–Hildebrand plots. The proposed approach was proved to be linear in the range of 10–90 μg mL−1 SFX when the absorbance was measured at 464 nm. Different set-ups were adopted for studying the reaction kinetics. Analytical method performance was assessed following the ICH guiding principles, and the results obtained were found to be satisfactory. Complex formation was found to be an exothermic reaction. A spectrochemical approach was adopted to study the charge-transfer (CT) complexation of sparfloxacin (SFX) with tetracyanoethylene (TCNE). Definitive screening design (DSD) was used to investigate the reaction variables.![]()
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Affiliation(s)
- Ahmed S. El-Shafie
- Department of Chemistry and Earth Sciences
- College of Arts and Sciences
- Qatar University
- Doha 2713
- Qatar
| | - Areej W. Khashan
- Department of Chemistry and Earth Sciences
- College of Arts and Sciences
- Qatar University
- Doha 2713
- Qatar
| | - Yasser H. A. Hussein
- Department of Chemistry and Earth Sciences
- College of Arts and Sciences
- Qatar University
- Doha 2713
- Qatar
| | - Marwa El-Azazy
- Department of Chemistry and Earth Sciences
- College of Arts and Sciences
- Qatar University
- Doha 2713
- Qatar
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Karmakar A, Singh B. Investigation of charge-transfer hydrogen bonding interaction of 1-(2-pyridylazo)-2-naphthol (PAN) and 4-(2-Pyridylazo)resorcinol (PAR) with chloranilic acid through experimental and DFT studies. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2018.03.069] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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11
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Palnati MK, Baindla N, Tigulla P. Spectrophotometric, Thermodynamic and Density Functional Studies of Charge Transfer Complex Between Benzhydryl Piperazine and 2,3-Dichloro-5,6-dicyano-1,4-benzoquinone. J SOLUTION CHEM 2018. [DOI: 10.1007/s10953-018-0767-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Al-Ahmary KM, Habeeb MM, Al-Obidan AH. Charge transfer complex between 2,3-diaminopyridine with chloranilic acid. Synthesis, characterization and DFT, TD-DFT computational studies. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 196:247-255. [PMID: 29454253 DOI: 10.1016/j.saa.2018.02.025] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Revised: 02/02/2018] [Accepted: 02/07/2018] [Indexed: 06/08/2023]
Abstract
New charge transfer complex (CTC) between the electron donor 2,3-diaminopyridine (DAP) with the electron acceptor chloranilic (CLA) acid has been synthesized and characterized experimentally and theoretically using a variety of physicochemical techniques. The experimental work included the use of elemental analysis, UV-vis, IR and 1H NMR studies to characterize the complex. Electronic spectra have been carried out in different hydrogen bonded solvents, methanol (MeOH), acetonitrile (AN) and 1:1 mixture from AN-MeOH. The molecular composition of the complex was identified to be 1:1 from Jobs and molar ratio methods. The stability constant was determined using minimum-maximum absorbances method where it recorded high values confirming the high stability of the formed complex. The solid complex was prepared and characterized by elemental analysis that confirmed its formation in 1:1 stoichiometric ratio. Both IR and NMR studies asserted the existence of proton and charge transfers in the formed complex. For supporting the experimental results, DFT computations were carried out using B3LYP/6-31G(d,p) method to compute the optimized structures of the reactants and complex, their geometrical parameters, reactivity parameters, molecular electrostatic potential map and frontier molecular orbitals. The analysis of DFT results strongly confirmed the high stability of the formed complex based on existing charge transfer beside proton transfer hydrogen bonding concordant with experimental results. The origin of electronic spectra was analyzed using TD-DFT method where the observed λmax are strongly consisted with the computed ones. TD-DFT showed the contributed states for various electronic transitions.
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Affiliation(s)
- Khairia M Al-Ahmary
- Department of Chemistry, Faculty of Sciences - AL Faisaliah, King Abdulaziz University, Jeddah, Saudi Arabia.
| | - Moustafa M Habeeb
- Department of Chemistry, Faculty of Sciences - AL Faisaliah, King Abdulaziz University, Jeddah, Saudi Arabia; Department of Chemistry, Faculty of Education, Alexandria University, Alexandria, Egypt
| | - Areej H Al-Obidan
- Department of Chemistry, University College - Dhiba, University of Tabuk, Dhiba, Saudi Arabia
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Shehab OR, AlRabiah H, Abdel-Aziz HA, Mostafa GA. Charge-transfer complexes of cefpodoxime proxetil with chloranilic acid and 2,3-dichloro-5,6-dicyano-1,4-benzoquinone: Experimental and theoretical studies. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2018.02.083] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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14
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Khani S, Montazerozohori M, Masoudiasl A, White J. A new 1D manganese(II) coordination polymer with end-to-end azide bridge and isonicotinoylhydrazone Schiff base ligand: Crystal structure, Hirshfeld surface, NBO and thermal analyses. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2017.10.021] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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15
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Synthesis, Spectroscopic and Computational Studies of Charge-Transfer Complexation Between 4-Aminoaniline and 2,3-Dichloro-5,6-dicyano-1,4-benzoquinone. J SOLUTION CHEM 2017. [DOI: 10.1007/s10953-017-0685-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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16
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Lakkadi A, Baindla N, Vuppala S, Tigulla P. Synthesis, spectroscopic, and computational studies of charge-transfer complexation between benzidine with 2,3-dichloro-5,6-dicyano-p-benzoquinone and chloronil. J PHYS ORG CHEM 2017. [DOI: 10.1002/poc.3700] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
| | - Naveen Baindla
- Department of Chemistry; Osmania University; Hyderabad TS India
| | - Srimai Vuppala
- Department of Chemistry; Osmania University; Hyderabad TS India
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Ghasemi F, Ghasemi K, Rezvani AR, Shokrollahi A, Refahi M, García-Granda S, Mendoza-Meroño R. A novel salt of antidiabetic drug metformin resulting from a proton transfer reaction: Synthesis, characterization, crystal structure and solution studies. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2016.11.011] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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18
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Mansour AM. Visible light photoactivatable CO releasing manganese (I) tricarbonyl complexes: Experimental and DFT studies. J Photochem Photobiol A Chem 2017. [DOI: 10.1016/j.jphotochem.2016.11.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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19
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Mansour A, Soliman FA, Shehab OR, Abdel-Ghani NT. Photodegradation of sulfadiazine catalyzed by p-benzoquinones and picric acid: application to charge transfer complexes. RSC Adv 2017. [DOI: 10.1039/c7ra05433e] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The photo degradation of sulfadiazine drug was effectively carried out at 256 nm in presence of DDQ and sodium nitrite. This was simply followed by UV-Vis spectroscopy. The effect of some additives such as oxalic acid, and/or hematite nanoparticles was studied.
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Affiliation(s)
- Ahmed M. Mansour
- Department of Chemistry
- Faculty of Science
- Cairo University
- Giza
- Egypt
| | - Fatma A. Soliman
- Department of Chemistry
- Faculty of Science
- Cairo University
- Giza
- Egypt
| | - Ola R. Shehab
- Department of Chemistry
- Faculty of Science
- Cairo University
- Giza
- Egypt
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20
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Al-Ahmary KM, Habeeb MM, Al-Obidan AH. Spectrophotometric study on the proton transfer reaction between 2-amino-4-methylpyridine with 2,6-dichloro-4-nitrophenol in methanol, acetonitrile and the binary mixture 50% methanol+50% acetonitrile. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2016; 154:135-144. [PMID: 26520474 DOI: 10.1016/j.saa.2015.10.036] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2015] [Revised: 10/11/2015] [Accepted: 10/22/2015] [Indexed: 06/05/2023]
Abstract
Proton transfer reaction between 2-amino-4-methylpyridine (2AMP) as the proton acceptor with 2,6-dichloro-4-nitrophenol (DCNP) as the proton donor has been investigated spectrophotometrically in methanol (MeOH), acetonitrile (AN) and a binary mixture composed of 50% MeOH and 50% AN (AN-Me). The composition of the complex has been investigated utilizing Job(')s and photometric titration methods to be 1:1. Minimum-maximum absorbance equation has been applied to estimate the formation constant of the proton transfer reaction (K(PT)) where it reached high values in the investigated solvent confirming its high stability. The formation constant recorded higher value in AN compared with MeOH and mixture of AN-Me. Based on the formation of stable proton transfer complex, a sensitive spectrophotometric method was suggested for quantitative determination of 2AMP. The Lambert-Beer(')s law was obeyed in the concentration range 0.5-8 μg mL(-1) with small values of limits of detection and quantification. The solid complex between 2AMP with DCNP has been synthesized and characterized by elemental analysis to be 1:1 in concordant with the molecular stoichiometry in solution. Further analysis of the solid complex was carried out using infrared and (1)H NMR spectroscopy.
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Affiliation(s)
- Khairia M Al-Ahmary
- Department of Chemistry, Faculty of Sciences - AL Faisaliah Campus, King Abdulaziz University, Jeddah, Saudi Arabia.
| | - Moustafa M Habeeb
- Department of Chemistry, Faculty of Sciences - AL Faisaliah Campus, King Abdulaziz University, Jeddah, Saudi Arabia; Department of Chemistry, Faculty of Education, Alexandria University, Alexandria, Egypt
| | - Areej H Al-Obidan
- Department of Chemistry, University College - Dhiba, University of Tabuk, Dhiba, Saudi Arabia
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Darweesh AF, Mansour AM, Elwahy AHM. Novel bis(benzothiazole-oxime)-based Pd(II)-complex: synthesis, characterization, quantum chemical calculations, and catalytic significance in Suzuki–Miyaura and Heck–Mizoroki cross coupling reactions. MONATSHEFTE FUR CHEMIE 2016. [DOI: 10.1007/s00706-015-1633-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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22
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Elazazy MS, Ganesh K, Sivakumar V, Huessein YHA. Interaction of p-synephrine with p-chloranil: experimental design and multiple response optimization. RSC Adv 2016. [DOI: 10.1039/c6ra10533e] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A multivariate factorial design was proposed for determination ofp-synephrine. Novelty of present approach stems from consolidating multiple responses into a unified performance characteristic.
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Affiliation(s)
- Marwa S. Elazazy
- Department of Chemistry and Earth Sciences
- College of Arts and Sciences
- Qatar University
- Qatar
| | - K. Ganesh
- Department of Chemistry and Earth Sciences
- College of Arts and Sciences
- Qatar University
- Qatar
| | - V. Sivakumar
- Department of Chemistry and Earth Sciences
- College of Arts and Sciences
- Qatar University
- Qatar
| | - Yasser H. A. Huessein
- Department of Chemistry and Earth Sciences
- College of Arts and Sciences
- Qatar University
- Qatar
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