Pub Date : 2020-12-16DOI: 10.56042/ijca.v59i12.34855
S. Bala, R. Partap, O. P. Yadav
From tensiometric measurements, critical micelle concentration (CMC), maximum surface excess concentration, minimum area per molecule at the air-liquid interface and thermodynamic parameters of micellization have been determined for an anionic surfactant: bis-(2-ethylhexyl) sodium sulfosuccinate (AOT) in aqueous medium. Effects on the above physico-chemical properties due to added electrolytes: Na 2 SO 4 and Na 3 PO 4 over a wide range of the surfactant concentrations and at 288.15, 293.15 and 298.15 K have been described in the light of intermolecular interactions. The CMC of AOT is lowered and the micellar stability is improved upon mixing the above electrolytes in aqueous surfactant solution and the same become more pronounced when divalent SO 42- are replaced by trivalent PO 43- . These observations may be beneficial for improving efficiency of AOT as a detergent, managing oil spill problem, in froth-flotation process for concentrating ores and for efficient recovery of petroleum in the tertiary process.
{"title":"Effects of Na2SO4 and Na3PO4 on the surface and thermodynamic properties of an anionic surfactant: bis-(2- ethyl hexyl) sodium sulfosuccinate (AOT) in aqueous solutions","authors":"S. Bala, R. Partap, O. P. Yadav","doi":"10.56042/ijca.v59i12.34855","DOIUrl":"https://doi.org/10.56042/ijca.v59i12.34855","url":null,"abstract":"From tensiometric measurements, critical micelle concentration (CMC), maximum surface excess concentration, minimum area per molecule at the air-liquid interface and thermodynamic parameters of micellization have been determined for an anionic surfactant: bis-(2-ethylhexyl) sodium sulfosuccinate (AOT) in aqueous medium. Effects on the above physico-chemical properties due to added electrolytes: Na 2 SO 4 and Na 3 PO 4 over a wide range of the surfactant concentrations and at 288.15, 293.15 and 298.15 K have been described in the light of intermolecular interactions. The CMC of AOT is lowered and the micellar stability is improved upon mixing the above electrolytes in aqueous surfactant solution and the same become more pronounced when divalent SO 42- are replaced by trivalent PO 43- . These observations may be beneficial for improving efficiency of AOT as a detergent, managing oil spill problem, in froth-flotation process for concentrating ores and for efficient recovery of petroleum in the tertiary process.","PeriodicalId":54992,"journal":{"name":"Indian Journal of Chemistry Section A-Inorganic Bio-Inorganic Physical Theoretical & Analytical Chemistry","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2020-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90473426","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-12-16DOI: 10.56042/ijca.v59i12.33714
R. Omer, L. Ahmed, M. Koparir, P. Koparir
Department of Chemistry, Faculty of Science & Health, Koya University, Koya KOY45, Kurdistan Region – F.R. Iraq Department of physics, Faculty of Science & Health, Koya University, Koya KOY45, Kurdistan Region – F.R. Iraq Department of chemistry, Faculty of Science, Firat University, 23169 ,Elazig, Turkey Department of physics, Faculty of Science, Firat University, 23169, Elazig, Turkey Institute of Forensics, Department of Chemistry, Malatya, Turkey
{"title":"Theoretical analysis of the reactivity of chloroquine and hydroxychloroquine","authors":"R. Omer, L. Ahmed, M. Koparir, P. Koparir","doi":"10.56042/ijca.v59i12.33714","DOIUrl":"https://doi.org/10.56042/ijca.v59i12.33714","url":null,"abstract":"Department of Chemistry, Faculty of Science & Health, Koya University, Koya KOY45, Kurdistan Region – F.R. Iraq Department of physics, Faculty of Science & Health, Koya University, Koya KOY45, Kurdistan Region – F.R. Iraq Department of chemistry, Faculty of Science, Firat University, 23169 ,Elazig, Turkey Department of physics, Faculty of Science, Firat University, 23169, Elazig, Turkey Institute of Forensics, Department of Chemistry, Malatya, Turkey","PeriodicalId":54992,"journal":{"name":"Indian Journal of Chemistry Section A-Inorganic Bio-Inorganic Physical Theoretical & Analytical Chemistry","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2020-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74883917","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-12-16DOI: 10.56042/ijca.v59i12.33146
N. Sridevi, D. Madheswari
Novel tri-dentate ligand-metal complexes [Mn(II), Co(II), Cu(II), Ni(II) and Zn(II) ( 1-5 )] have been synthesized using L-histidine amino acid derived Schiff base ligand and characterized using analytical and spectral methods like UV-visible, FT-IR and ESI-MS techniques. The antioxidant studies of the Schiff base ligand and 1-5 complexes reveal that complexes exhibit significant free radical scavenging activity against the free radical DPPH. In vitro cytotoxic activity of the 1-5 complexes evaluated against the breast cancer cell lines (MCF-7), reveal that complex 3 exhibits higher cytotoxicity than any other synthesized metal complexes. The docking studies have been carried out using BSA protein and DNA biomolecules with synthesized metal complexes. Antimicrobial studies has demonstrated that Cu(II) complexes possess higher activity against both Gram positive and Gram negative bacteria as well as Fungi.
{"title":"Theoretical and experimental studies of novel histidine derived Schiff base metal complexes, active towards biomedical and MCF 7 cell lines","authors":"N. Sridevi, D. Madheswari","doi":"10.56042/ijca.v59i12.33146","DOIUrl":"https://doi.org/10.56042/ijca.v59i12.33146","url":null,"abstract":"Novel tri-dentate ligand-metal complexes [Mn(II), Co(II), Cu(II), Ni(II) and Zn(II) ( 1-5 )] have been synthesized using L-histidine amino acid derived Schiff base ligand and characterized using analytical and spectral methods like UV-visible, FT-IR and ESI-MS techniques. The antioxidant studies of the Schiff base ligand and 1-5 complexes reveal that complexes exhibit significant free radical scavenging activity against the free radical DPPH. In vitro cytotoxic activity of the 1-5 complexes evaluated against the breast cancer cell lines (MCF-7), reveal that complex 3 exhibits higher cytotoxicity than any other synthesized metal complexes. The docking studies have been carried out using BSA protein and DNA biomolecules with synthesized metal complexes. Antimicrobial studies has demonstrated that Cu(II) complexes possess higher activity against both Gram positive and Gram negative bacteria as well as Fungi.","PeriodicalId":54992,"journal":{"name":"Indian Journal of Chemistry Section A-Inorganic Bio-Inorganic Physical Theoretical & Analytical Chemistry","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2020-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79129096","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-12-16DOI: 10.56042/ijca.v59i12.35533
P. Dave, B. Bhagat, Bhavesh Agrawal, Prasenjit Maity
In the present work we have demonstrated a supramolecular approach for ratiometric luminescence sensing of nitroaromatic explosive compounds (NAEs) by employing a red luminescent Eu(III) complex and a green luminescent Pt(II) complex with in a Triton X-100 surfactant based micellar host in water. The Eu-complex gets entrapped inside micellar core whereas the Pt-C2 remains grafted on the surface of the spherical micelles due to their structural amendments and thus facilitates preferential interaction of Pt-C2 with NAE molecules mainly through interaction. The presence of explosive traces quenches the green emission (508-545 nm) of Pt-complex whereas the red emission (614 nm) of Eu-complex remains unaffected. The strategy demonstrates first report of two independent luminophore based ratiometric sensing in water using a micellar host.
{"title":"A supramolecular strategy for ratiometric luminescence sensing of nitroaromatic explosives in water","authors":"P. Dave, B. Bhagat, Bhavesh Agrawal, Prasenjit Maity","doi":"10.56042/ijca.v59i12.35533","DOIUrl":"https://doi.org/10.56042/ijca.v59i12.35533","url":null,"abstract":"In the present work we have demonstrated a supramolecular approach for ratiometric luminescence sensing of nitroaromatic explosive compounds (NAEs) by employing a red luminescent Eu(III) complex and a green luminescent Pt(II) complex with in a Triton X-100 surfactant based micellar host in water. The Eu-complex gets entrapped inside micellar core whereas the Pt-C2 remains grafted on the surface of the spherical micelles due to their structural amendments and thus facilitates preferential interaction of Pt-C2 with NAE molecules mainly through interaction. The presence of explosive traces quenches the green emission (508-545 nm) of Pt-complex whereas the red emission (614 nm) of Eu-complex remains unaffected. The strategy demonstrates first report of two independent luminophore based ratiometric sensing in water using a micellar host.","PeriodicalId":54992,"journal":{"name":"Indian Journal of Chemistry Section A-Inorganic Bio-Inorganic Physical Theoretical & Analytical Chemistry","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2020-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82254872","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-12-16DOI: 10.56042/ijca.v59i12.33731
B. R. Srinivasan, S. N. Dhuri, K. U. Narvekar
S. No.
美国没有。
{"title":"Crystal structure of potassium hydrogen phthalate revisited","authors":"B. R. Srinivasan, S. N. Dhuri, K. U. Narvekar","doi":"10.56042/ijca.v59i12.33731","DOIUrl":"https://doi.org/10.56042/ijca.v59i12.33731","url":null,"abstract":"S. No.","PeriodicalId":54992,"journal":{"name":"Indian Journal of Chemistry Section A-Inorganic Bio-Inorganic Physical Theoretical & Analytical Chemistry","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2020-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87218046","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-11-05DOI: 10.56042/ijca.v59i11.31853
A. Sudha, S. Ali
The Schiff base ligand obtained from the reaction of 2-amino-3-hydroxypyridine, 2,4,6-trihydroxy benzaldehyde is described. Cu(II), Ni(II), Co(II), and Zn(II)complexes have been analyzed by various spectroscopic techniques like FT-IR, UV-visible, mass spectrometry and NMR. Based on spectral data octahedral geometry has been assigned to the complexes. In the present study the prepared Schiff base ligand and all the metal complexes have been synthesized and studied for their in vitro anti diabetic, antioxidant and antibacterial activities. Geometry optimization and the chemical stability and reactivity of complexes clearly understood with help of frontier molecular orbital’s (HOMO-LUMO) using B3LYP/LACVP++ basis sets based on density functional theory. Furthermore, Molecular docking study of the Schiff base ligand and their metal (II) complexes showed good binding score with human pancreatic α-amylase (PDB: 1HNY).
{"title":"Investigation of molecular docking, biological and DFT studies of Schiff base transition metal complexes","authors":"A. Sudha, S. Ali","doi":"10.56042/ijca.v59i11.31853","DOIUrl":"https://doi.org/10.56042/ijca.v59i11.31853","url":null,"abstract":"The Schiff base ligand obtained from the reaction of 2-amino-3-hydroxypyridine, 2,4,6-trihydroxy benzaldehyde is described. Cu(II), Ni(II), Co(II), and Zn(II)complexes have been analyzed by various spectroscopic techniques like FT-IR, UV-visible, mass spectrometry and NMR. Based on spectral data octahedral geometry has been assigned to the complexes. In the present study the prepared Schiff base ligand and all the metal complexes have been synthesized and studied for their in vitro anti diabetic, antioxidant and antibacterial activities. Geometry optimization and the chemical stability and reactivity of complexes clearly understood with help of frontier molecular orbital’s (HOMO-LUMO) using B3LYP/LACVP++ basis sets based on density functional theory. Furthermore, Molecular docking study of the Schiff base ligand and their metal (II) complexes showed good binding score with human pancreatic α-amylase (PDB: 1HNY).","PeriodicalId":54992,"journal":{"name":"Indian Journal of Chemistry Section A-Inorganic Bio-Inorganic Physical Theoretical & Analytical Chemistry","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2020-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77548095","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-11-05DOI: 10.56042/ijca.v59i11.27659
{"title":"Nickel(II) complexes of m-ethylphenylxanthate with nitrogen donors and their biological screening","authors":"","doi":"10.56042/ijca.v59i11.27659","DOIUrl":"https://doi.org/10.56042/ijca.v59i11.27659","url":null,"abstract":"","PeriodicalId":54992,"journal":{"name":"Indian Journal of Chemistry Section A-Inorganic Bio-Inorganic Physical Theoretical & Analytical Chemistry","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2020-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89339375","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-11-05DOI: 10.56042/ijca.v59i11.31651
Fang Tian, S. Li
A spectrophotometric method has been studied for the determination of epsilon aminocaproic acid (EACA) through charge transfer (CT) complexation with bromanil (TBBQ). The CT reaction has been carried out at 70 °C of the water bath for 30 min in the borax buffer solution. The spectrum obtained for EACA/TBBQ system shows the maximum absorption band at wavelength of 352 nm. The CT complex is also confirmed by both FTIR and 1 H NMR measurements. The stoichiometry of the CT complex is found to be 1:1 ratio by Job and straight line methods between the donor and the acceptor. At the optimum reaction conditions, Beer’s law is obeyed in a concentration limit of 2 ～ 8 µg mL − 1 . The relative standard deviation is less than 1.5%. The apparent molar absorptivity is determined to be 1.16×10 4 L mol − 1 cm − 1 at 352 nm. The thermodynamic properties and reaction mechanism of the CT complexation have been discussed. The developed method could be applied successfully for the determination of the studied compound in its pharmaceutical dosage form with a good precision and accuracy compared to official method as revealed by t - and F -tests.
{"title":"Study of spectrophotometric characteristics of the charge transfer complexation of epsilon aminocaproic acid with bromanil","authors":"Fang Tian, S. Li","doi":"10.56042/ijca.v59i11.31651","DOIUrl":"https://doi.org/10.56042/ijca.v59i11.31651","url":null,"abstract":"A spectrophotometric method has been studied for the determination of epsilon aminocaproic acid (EACA) through charge transfer (CT) complexation with bromanil (TBBQ). The CT reaction has been carried out at 70 °C of the water bath for 30 min in the borax buffer solution. The spectrum obtained for EACA/TBBQ system shows the maximum absorption band at wavelength of 352 nm. The CT complex is also confirmed by both FTIR and 1 H NMR measurements. The stoichiometry of the CT complex is found to be 1:1 ratio by Job and straight line methods between the donor and the acceptor. At the optimum reaction conditions, Beer’s law is obeyed in a concentration limit of 2 ～ 8 µg mL − 1 . The relative standard deviation is less than 1.5%. The apparent molar absorptivity is determined to be 1.16×10 4 L mol − 1 cm − 1 at 352 nm. The thermodynamic properties and reaction mechanism of the CT complexation have been discussed. The developed method could be applied successfully for the determination of the studied compound in its pharmaceutical dosage form with a good precision and accuracy compared to official method as revealed by t - and F -tests.","PeriodicalId":54992,"journal":{"name":"Indian Journal of Chemistry Section A-Inorganic Bio-Inorganic Physical Theoretical & Analytical Chemistry","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2020-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91062543","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-11-05DOI: 10.56042/ijca.v59i11.36247
Priyanka Thakral, M. Sharma, Diksha Dewan, Sakshi Sharma
A simple laboratory experiment to measure the surface tension of liquids has been proposed in this work, which is well suited for any undergraduate laboratory demonstration. Burette with modified Tate’s law has been found to return surface tension values as good as those obtained using Traube’s stalagmometer. Experimental data and error analysis show similar result accuracy. Also, a comparative study brings to notice the exactitude of drop weight method over drop number method, both from stalagmometer and burette. The rate of flow of 11–23 drops per minute has been found to be highly suitable for minimization of errors due to evaporation and satellite drop formation. Angular dependence of surface tension has been proposed numerically and validated for the respective case with the angle of 0° to deviate the least from literature value. The results obtained in this study are synchronous with the established theoretical understanding of the concept.
{"title":"Analysis of accuracy of burette in determination of surface tension of liquids and study of its variation with detachment time and inclination angle","authors":"Priyanka Thakral, M. Sharma, Diksha Dewan, Sakshi Sharma","doi":"10.56042/ijca.v59i11.36247","DOIUrl":"https://doi.org/10.56042/ijca.v59i11.36247","url":null,"abstract":"A simple laboratory experiment to measure the surface tension of liquids has been proposed in this work, which is well suited for any undergraduate laboratory demonstration. Burette with modified Tate’s law has been found to return surface tension values as good as those obtained using Traube’s stalagmometer. Experimental data and error analysis show similar result accuracy. Also, a comparative study brings to notice the exactitude of drop weight method over drop number method, both from stalagmometer and burette. The rate of flow of 11–23 drops per minute has been found to be highly suitable for minimization of errors due to evaporation and satellite drop formation. Angular dependence of surface tension has been proposed numerically and validated for the respective case with the angle of 0° to deviate the least from literature value. The results obtained in this study are synchronous with the established theoretical understanding of the concept.","PeriodicalId":54992,"journal":{"name":"Indian Journal of Chemistry Section A-Inorganic Bio-Inorganic Physical Theoretical & Analytical Chemistry","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2020-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89772098","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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