Pub Date : 2019-08-10DOI: 10.17677/FN20714807.2019.04.05
N. Vasiliev
{"title":"html pdf Synthesis of Fluorine-Containing Ligands of Benzofuran Type and Properties of Their Complexes with Europium (III) in Aqueous Solutions","authors":"N. Vasiliev","doi":"10.17677/FN20714807.2019.04.05","DOIUrl":"https://doi.org/10.17677/FN20714807.2019.04.05","url":null,"abstract":"","PeriodicalId":12217,"journal":{"name":"Fluorine Notes","volume":"9 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81357504","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-08-10DOI: 10.17677/FN20714807.2019.04.01
S. Igumnov
{"title":"Preparation of Pentafluorophenol and Other Polyfluorophenols and Polyfluorodihydroxybenzenes from Polyfluoroaromatic Acids","authors":"S. Igumnov","doi":"10.17677/FN20714807.2019.04.01","DOIUrl":"https://doi.org/10.17677/FN20714807.2019.04.01","url":null,"abstract":"","PeriodicalId":12217,"journal":{"name":"Fluorine Notes","volume":"669 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76857130","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-06-14DOI: 10.17677/FN20714807.2019.03.05
A. Grigoreva
{"title":"RAFT-Copolymerization of Vinyl Acetate and 2,2,3,3,4,4,5,5-Octafluoropentylacrylate","authors":"A. Grigoreva","doi":"10.17677/FN20714807.2019.03.05","DOIUrl":"https://doi.org/10.17677/FN20714807.2019.03.05","url":null,"abstract":"","PeriodicalId":12217,"journal":{"name":"Fluorine Notes","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79273379","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-06-14DOI: 10.17677/FN20714807.2019.03.01
K. E. Chekurov, A. Barabanova, A. Peregudov, A. Khokhlov
{"title":"The investigation of the polymerization of2,3,4,5,6-pentafluorostyrene in the presence of 2-cyano-2-propyl-dithiobenzoate by 1H-NMR spectroscopy","authors":"K. E. Chekurov, A. Barabanova, A. Peregudov, A. Khokhlov","doi":"10.17677/FN20714807.2019.03.01","DOIUrl":"https://doi.org/10.17677/FN20714807.2019.03.01","url":null,"abstract":"","PeriodicalId":12217,"journal":{"name":"Fluorine Notes","volume":"28 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85005984","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-06-14DOI: 10.17677/FN20714807.2019.03.02
A. Rakhimov
: A quantum-chemical study of the initiation mechanism for the cationic polymerization of p -ethylstyrene in the presence of a complex catalyst boron fluoride - water by the classical ab initio method in the basis of 6-311G** was first performed. Geometry optimization was performed for all parameters by the standard gradient method. The studied reaction has a barrier character and is exothermic. The energy barrier in the attack of the initiating particle on the α -carbon atom of isoolefin is 262 kJ/mol, the thermal effect of the reaction is 39 kJ/mol.
{"title":"About the Mechanism of Cationic Polymerization of P-Ethylstyrene in the Presence of a Complex Catalyst Boron Fluoride – Water","authors":"A. Rakhimov","doi":"10.17677/FN20714807.2019.03.02","DOIUrl":"https://doi.org/10.17677/FN20714807.2019.03.02","url":null,"abstract":": A quantum-chemical study of the initiation mechanism for the cationic polymerization of p -ethylstyrene in the presence of a complex catalyst boron fluoride - water by the classical ab initio method in the basis of 6-311G** was first performed. Geometry optimization was performed for all parameters by the standard gradient method. The studied reaction has a barrier character and is exothermic. The energy barrier in the attack of the initiating particle on the α -carbon atom of isoolefin is 262 kJ/mol, the thermal effect of the reaction is 39 kJ/mol.","PeriodicalId":12217,"journal":{"name":"Fluorine Notes","volume":"31 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82809924","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-06-14DOI: 10.17677/FN20714807.2019.03.04
I. Mokrushin
{"title":"NMR Analysis in the technology of perfluoro(vinyloxy)butanoic acid ester production","authors":"I. Mokrushin","doi":"10.17677/FN20714807.2019.03.04","DOIUrl":"https://doi.org/10.17677/FN20714807.2019.03.04","url":null,"abstract":"","PeriodicalId":12217,"journal":{"name":"Fluorine Notes","volume":"23 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81023189","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-06-14DOI: 10.17677/FN20714807.2019.03.03
Veronika Don
{"title":"Preparation of 2-Bromoethyl Tetrafluorochlorosulfate for the Synthesis of Bromodifluoroacetic Acid Derivatives","authors":"Veronika Don","doi":"10.17677/FN20714807.2019.03.03","DOIUrl":"https://doi.org/10.17677/FN20714807.2019.03.03","url":null,"abstract":"","PeriodicalId":12217,"journal":{"name":"Fluorine Notes","volume":"15 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84403509","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-04-14DOI: 10.17677/FN20714807.2019.02.02
S. Krukovsky
A new methodology for obtainment of compositions based on Fluorosam-39 monomer (triethoxysilylpropylamide perfluoro-2,5-dimethyl-3,6-dioxanonanoic acid) with fluororubber SKF-32 (vinylidene fluoride with trifluorochloroethylene co-polymer) in the presence of AMEO (γaminopropyltriethoxysilane) as a catalyst and co-reactant was developed. Content of fluororubber in compositions varied from 10 to 55% (mass.). Thermal properties of the composition, obtained from Fluorosam-39:SKF-32:AMEO at the ratio 45,5: 48,5: 6 (mass.%) were measured using thermomechanical and thermogravimetric analysis methods.
{"title":"Obtainment and thermal characteristics of the composition of perfluoro-2,5-dimethyl-3,6-dioxanonanoic acid triethoxysilylpropylamide (Fluorosam-39) and fluororubber SKF-32","authors":"S. Krukovsky","doi":"10.17677/FN20714807.2019.02.02","DOIUrl":"https://doi.org/10.17677/FN20714807.2019.02.02","url":null,"abstract":"A new methodology for obtainment of compositions based on Fluorosam-39 monomer (triethoxysilylpropylamide perfluoro-2,5-dimethyl-3,6-dioxanonanoic acid) with fluororubber SKF-32 (vinylidene fluoride with trifluorochloroethylene co-polymer) in the presence of AMEO (γaminopropyltriethoxysilane) as a catalyst and co-reactant was developed. Content of fluororubber in compositions varied from 10 to 55% (mass.). Thermal properties of the composition, obtained from Fluorosam-39:SKF-32:AMEO at the ratio 45,5: 48,5: 6 (mass.%) were measured using thermomechanical and thermogravimetric analysis methods.","PeriodicalId":12217,"journal":{"name":"Fluorine Notes","volume":"18 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84812734","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-04-14DOI: 10.17677/FN20714807.2019.02.04
E. Tretyakov
A 4,4,5,5-tetramethyl-4,5-dihydro-1H-imidazole-3-oxide-1-oxyl lithium derivative was found to react with perfluoroaromatic compounds with formation of products of fluoro-atom substitution, namely fluorinated aryl(hetaryl)-substituted nitronyl nitroxides. The yields of the fluorinated nitroxides were acceptable in cases of reactions with functionalized perfluorobenzene and perfluoropyridine (25–60%), but was low in case of reaction with perfluorobiphenyl (~ 5%). Molecular and crystal structures of the obtained nitronyl nitroxides were solved by monocrystal Xray diffraction analysis, and the nature of the radical was ascertained by EPR.
{"title":"Exploration of SNF-Approach toward Functionalized Nitronyl Nitroxides","authors":"E. Tretyakov","doi":"10.17677/FN20714807.2019.02.04","DOIUrl":"https://doi.org/10.17677/FN20714807.2019.02.04","url":null,"abstract":"A 4,4,5,5-tetramethyl-4,5-dihydro-1H-imidazole-3-oxide-1-oxyl lithium derivative was found to react with perfluoroaromatic compounds with formation of products of fluoro-atom substitution, namely fluorinated aryl(hetaryl)-substituted nitronyl nitroxides. The yields of the fluorinated nitroxides were acceptable in cases of reactions with functionalized perfluorobenzene and perfluoropyridine (25–60%), but was low in case of reaction with perfluorobiphenyl (~ 5%). Molecular and crystal structures of the obtained nitronyl nitroxides were solved by monocrystal Xray diffraction analysis, and the nature of the radical was ascertained by EPR.","PeriodicalId":12217,"journal":{"name":"Fluorine Notes","volume":"88 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76828425","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-04-14DOI: 10.17677/FN20714807.2019.02.03
A. Rakhimov
s: A Quantum-chemical calculation of some trifluoromethylstyrene molecules: 2(trifluoromethyl)styrene, 3-(trifluoromethyl)styrene, 4-(trifluoromethyl)styrene was first performed by the DFT PBE0 method in the 6-311G ** basis. Geometry optimization was performed for all parameters by the standard gradient method. The optimized geometrical and electronic structure of these compounds was obtained. Their acidic force (pKa = 30-32). theoretically estimated. It is established that the molecules belong to the class of very weak H-
{"title":"Quantum-Chemical Calculation of Some Molecules of Triftoromethylstyroles by the DFT Method","authors":"A. Rakhimov","doi":"10.17677/FN20714807.2019.02.03","DOIUrl":"https://doi.org/10.17677/FN20714807.2019.02.03","url":null,"abstract":"s: A Quantum-chemical calculation of some trifluoromethylstyrene molecules: 2(trifluoromethyl)styrene, 3-(trifluoromethyl)styrene, 4-(trifluoromethyl)styrene was first performed by the DFT PBE0 method in the 6-311G ** basis. Geometry optimization was performed for all parameters by the standard gradient method. The optimized geometrical and electronic structure of these compounds was obtained. Their acidic force (pKa = 30-32). theoretically estimated. It is established that the molecules belong to the class of very weak H-","PeriodicalId":12217,"journal":{"name":"Fluorine Notes","volume":"36 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85292047","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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