Academic literature on the topic 'Oxonium'

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Journal articles on the topic "Oxonium"

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Jin, Shou-Wen, Bing-Xia Chen, Yu-Shuang Ge, Hua-Bing Yin, and Yu-Ping Fang. "Oxonium picrate." Acta Crystallographica Section E Structure Reports Online 67, no. 7 (2011): o1694. http://dx.doi.org/10.1107/s1600536811022574.

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Liu, Zhenfeng, and Jianyong Liu. "DFT investigation on mechanism of dirhodium tetracarboxylate-catalyzed O-H insertion of diazo compounds with H2O." Open Chemistry 8, no. 1 (2010): 223–28. http://dx.doi.org/10.2478/s11532-009-0118-8.

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AbstractThe mechanism of the dirhodium tetracarboxylate-catalyzed O-H insertion reaction of diazomethane and methyl diazoacetate with H2O has been studied in detail using DFT calculations. The rhodium catalyst and a diazo compound couple to form a rhodiumcarbene complex. Of two reaction pathways of the Rh(II)-carbene complex with H2O, the stepwise pathway is more preferable than the concerted one. Formation of a Rh(II) complex-associated oxonium ylide is an exothermal process, and direct decomposition of the ylide gives a very high barrier. The high barriers for the 1,2-H shift of Rh(II) compl
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Stogniy, Marina Yu, Ekaterina N. Abramova, Irina A. Lobanova, et al. "Synthesis of Functional Derivatives of 7,8-Dicarba-nido-undecaborate Anion by Ring-Opening of Its Cyclic Oxonium Derivatives." Collection of Czechoslovak Chemical Communications 72, no. 12 (2007): 1676–88. http://dx.doi.org/10.1135/cccc20071676.

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A new approach to synthesis of functional derivatives of 7,8-dicarba-nido-undecaborate anion based on ring-opening of its cyclic oxonium derivatives [10-(CH2)4O-7,8-C2B9H11] and [10-O(CH2CH2)2O-7,8-C2B9H11] with various nucleophiles was developed. Both cyclic oxonium derivatives can be obtained as single isomers by reaction of the parent anion [7,8-C2B9H12]- with mercury(II) chloride in the corresponding solvents. Mechanism of formation of the cyclic oxonium derivatives of 7,8-dicarba-nido-undecaborate anion was proposed. A series of 7,8-dicarba-nido-undecaborate derivatives with terminal carb
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Davey, Stephen G. "Tricyclic oxonium tamed." Nature Reviews Chemistry 3, no. 12 (2019): 669. http://dx.doi.org/10.1038/s41570-019-0150-y.

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Rozenberg, Kseniya A., Ramiza K. Rastsvetaeva, and Alexander P. Khomyakov. "Decationized and hydrated eudialytes. Oxonium problem." European Journal of Mineralogy 17, no. 6 (2006): 875–82. http://dx.doi.org/10.1127/0935-1221/2005/0017-0875.

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PETKEWICH, RACHEL. "TAMING ALKYL OXONIUM IONS." Chemical & Engineering News 86, no. 39 (2008): 10. http://dx.doi.org/10.1021/cen-v086n039.p010.

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Ferguson, G., J. F. Gallagher, R. Fullwood, and D. Parker. "Oxonium (R)-O-acetylmandelate." Acta Crystallographica Section C Crystal Structure Communications 48, no. 10 (1992): 1909–11. http://dx.doi.org/10.1107/s0108270192008199.

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Tedder, John M., and G. Stewart Walker. "Investigations of oxonium ions." Journal of the Chemical Society, Perkin Transactions 2, no. 3 (1991): 317. http://dx.doi.org/10.1039/p29910000317.

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Murphy, Graham K., Fredrik P. Marmsäter, and F. G. West. "Polycyclic oxonium ylides — Use of cyclic acetals as convenient scaffolds in the construction of fused bicyclic compounds containing a medium ring." Canadian Journal of Chemistry 84, no. 10 (2006): 1470–86. http://dx.doi.org/10.1139/v06-111.

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Cyclic mixed acetals with pendant diazoketone side chains undergo efficient rearrangement to ether-bridged cyclooctanoid and cycloheptanoid systems upon treatment with Cu(hfacac)2. Stevens [1,2]-shift of an oxonium ylide furnishes the major product, in some cases accompanied by minor amounts of a product resulting from [1,2]-shift of a sulfonium ylide. These results demonstrate that hetero-substituted carbons are suitable migrating groups for the Stevens [1,2]-shift of oxonium ylides. In cases employing a mixed thioacetal, the resulting sulfide served as a trigger for cleavage of the bridging
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Chênevert, Robert, Daniel Chamberland, Michel Simard, and François Brisse. "Complexes of 18-crown-6 with oxonium ions derived from transition metal chlorides and hydrochloric acid: 18-crown-6.H3O+. FeCl4−, 18-crown-6.H3O+.InCl4−, (18-crown-6.H3O+)2.Pd2Cl62−." Canadian Journal of Chemistry 67, no. 1 (1989): 32–36. http://dx.doi.org/10.1139/v89-006.

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The macrocyclic polyether 18-crown-6 forms complexes with hydrates of strong acids derived from transition metal chlorides and hydrochloric acid. The following charged-component complexes have been isolated and characterized: 18-crown-6.H3O+.FeCl4−, 18-crown-6.H3O+.InCl4−, and (18-crown-6.H3O+)2.Pd2Cl62−. X-ray diffraction study of the palladium complex is reported. The oxonium ion is located at the center of the macrocyclic ether cavity and the symmetry of the ring is close to D3d. Keywords: 18-crown-6 complexes, oxonium ions, X-ray diffraction, crystal structure
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Dissertations / Theses on the topic "Oxonium"

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Donohoe, Timothy J. "Chiral oxonium ions." Thesis, University of Oxford, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.314854.

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Schubert, Jeffrey W. "The structure of bromonium, chloronium, and oxonium ions." Click here for download, 2008. http://proquest.umi.com/pqdweb?did=1537007641&sid=1&Fmt=2&clientId=3260&RQT=309&VName=PQD.

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Waterman, James R. "Generation and rearrangement of carbenoid-derived ammonium and oxonium ylides." Thesis, University of Nottingham, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.439997.

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Bouillon, Nelly. "Homopolymérisation des époxy par les complexes BF3-amines." Lyon, INSA, 1988. http://www.theses.fr/1988ISAL0037.

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Le travail présenté concerne l’étude de l’homopolymérisation cationique des époxy amorcée par les complexes BF3- amine en présence d'un diol. La synthèse de différents complexes et leur dissolution dans un diol a permis de montrer l’influence de la basicité de l’amine complexée sur leur réactivité avec un prépolymère DGEBA n = 0,03. Dans un deuxième temps nous avons étudié le mécanisme de polymérisation d'un mono époxy amorcée par le complexe BF3 - 4-chloroaniline en présence d'un poly oxyde d'éthylène glycol de masse 300. La réaction a pu être décrite par la compétition entre deux mécanismes
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Bate, Andrea Louise. "Synthesis of carbocycles by rearrangement of oxonium ylides generated from metal carbenoids." Thesis, University of Nottingham, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.368272.

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Guillonneau, Loïc. "Etudes de voies de synthèses du SSR149415." Bordeaux 1, 2007. http://www.theses.fr/2007BOR13346.

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Le SSR149415 est une nouvelle molécule visant à traiter les troubles de l'émotion comme le stress et l'anxiété en ciblant les récepteurs V1b de la vasopressine impliqués dans l'émotivité. Au cours de cette thèse, nous avons cherché à développer une nouvelle voie d'accès originale et efficasse au SSR149415, noyau oxoindole α-α' substitué de configuration (R). [Schéma de la molécule SSR149415 dans le résumé d'origine] Les étapes clés des différentes approches entreprises sont une réation de Petasis suivie, soit d'une α-arylation intramoléculaire d'une fonction ester, soit d'une α-arylation inter
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Guerot, Carine. "Construction of carbocycles via oxonium ylides generation and rearrangement : towards the synthesis of taxol." Thesis, University of Glasgow, 2009. http://theses.gla.ac.uk/645/.

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The diterpenoid natural product Taxol, first discovered in the late 1960’s, is one of the most important current drugs for the treatment of several cancers including breast and ovarian cancers. Although tremendous efforts towards its synthesis have been made in the last two decades, resulting in six elegant total syntheses, Taxol still constitutes a remarkable challenge for organic chemists due to its unique structural framework. The high level of interest has spilled over to our laboratory, the purpose of this thesis was to develop an approach for the construction of medium-ring fused polycar
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Fessard, Thomas C. "Stereoselective synthesis of cyclic ethers via a tandem oxonium ylide formation and rearrangement strategy." Thesis, University of Nottingham, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.416430.

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Bray, David. "Cationic ring opening polymerisation (CROP) of oxetane and its derivatives using oxonium derived initiators." Thesis, Aston University, 2009. http://publications.aston.ac.uk/15287/.

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Several cationic initiator systems were developed and used to polymerise oxetane with two oxonium ion initiator systems being investigated in depth. The first initiator system was generated by the elimination of a chloride group from a chloro methyl ethyl ether. Adding a carbonyl co-catalyst to a carbocationic centre generated the second initiator system. It was found that the anion used to stabilise the initiator was critical to the initial rate of polymerisation of oxetane with hexafluoroantimonate resulting in the fastest polymerisations. Both initiator systems could be used at varying mono
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Dossetter, Alexander Graham. "An approach to the total synthesis of neoliacinic acid, a highly oxygenated sesquiterpene lactone." Thesis, University of Nottingham, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.243491.

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Books on the topic "Oxonium"

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Ettinger, Amos Aschbach. The Diary of an American oxonian. Ashantilly Press, 1987.

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Hardpress. Oxonian. HardPress, 2020.

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Hill, George Birkbeck. Harvard College, By An Oxonian. Kessinger Publishing, LLC, 2007.

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Hill, George Birkbeck. Harvard College, By An Oxonian. Kessinger Publishing, LLC, 2007.

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[Libellus sophistarum ad vsum Oxonien[sis]]. W. de Worde, 1985.

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(pseud), Thomas Little. Confessions of an Oxonian Ed. by T. Little. HardPress, 2020.

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Bolton, M. P. W. Examination of the Principles of the Scoto-Oxonian Philosophy. HardPress, 2020.

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Reiner, Kopp Clemens, ed. Die Fallaciae ad modum Oxoniae: Ein Fehlschlusstraktat aus dem 13. Jahrhundert. Druck W. Kleikamp, 1985.

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Horwich, Paul. Wittgenstein’s Global Deflationism. Edited by Herman Cappelen, Tamar Szabó Gendler, and John Hawthorne. Oxford University Press, 2016. http://dx.doi.org/10.1093/oxfordhb/9780199668779.013.35.

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This article explores Ludwig Wittgenstein’s ideas about the nature of philosophy, with particular emphasis on his rejection of “T-philosophy”—a traditionally dominant form of philosophy that, although self-consciosly a priori, is shaped by theoretical goals and methods of reasoning that closely resemble those of the sciences. After discussing the goals and methods that characterize T-philosophy, the article presents a formidable Wittgensteinian argument against that practice. It proceeds to describe the sort of treatment of particular philosophical problems that is called for by this argument;
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Aydelotte, Frank. The American Oxonian V3: The Official Magazine Of The Alumni Association Of American Rhodes Scholars. Kessinger Publishing, LLC, 2007.

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Book chapters on the topic "Oxonium"

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Gooch, Jan W. "Oxonium Ion." In Encyclopedic Dictionary of Polymers. Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_8330.

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Hirota, E., K. Kuchitsu, T. Steimle, J. Vogt, and N. Vogt. "175 H3O+ Oxonium." In Molecules Containing No Carbon Atoms and Molecules Containing One or Two Carbon Atoms. Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-540-70614-4_176.

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Demaison, J. "138 H3O+ Oxonium." In Symmetric Top Molecules. Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-540-47532-3_140.

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Murphy, Graham K., and F. G. West. "Oxonium Ylide Rearrangements in Synthesis." In Molecular Rearrangements in Organic Synthesis. John Wiley & Sons, Inc, 2015. http://dx.doi.org/10.1002/9781118939901.ch16.

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Winkelmann, Jochen. "Diffusion coefficient of [bis(2,4,6-tribromophenyl)methylene]hydroxy-oxonium in benzene." In Diffusion in Gases, Liquids and Electrolytes. Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-540-73735-3_787.

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Malhotra, Deepika, Gerald B. Hammond, and Bo Xu. "Ligand Design in Gold Catalysis and Chemistry of Gold–Oxonium Intermediates." In Topics in Current Chemistry. Springer International Publishing, 2014. http://dx.doi.org/10.1007/128_2014_592.

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West, Frederick G. "Rearrangement Processes of Oxonium and Ammonium Ylides Formed by Rhodium(II)-Catalyzed Carbene Transfer." In Modern Rhodium-Catalyzed Organic Reactions. Wiley-VCH Verlag GmbH & Co. KGaA, 2005. http://dx.doi.org/10.1002/3527604693.ch18.

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Baranzini, Mauro, and Amalia Mirante. "The Oxonian-Italian School of Economics, 1950 to About 1990." In A Compendium of Italian Economists at Oxbridge. Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-32219-3_2.

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Jung-Palczewska, E. "From Oxonian Sources to Parisian Rebellion: Attempts to Overcome Aristotelianism in Fourteenth-Century Physics." In Textes et Etudes du Moyen Âge. Brepols Publishers, 2004. http://dx.doi.org/10.1484/m.tema-eb.3.2107.

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Pizzichini, M., L. Arezzini, G. Cinci, et al. "Uric Acid and Allantoin in Rat Liver after Oxonic Acid and 14C-Formate." In Purine and Pyrimidine Metabolism in Man VIII. Springer US, 1995. http://dx.doi.org/10.1007/978-1-4615-2584-4_167.

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Conference papers on the topic "Oxonium"

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Ueda, Koji, Atsuhiko Toyama, Taka-Aki Sato, Yusuke Nakamura, and Hidewaki Nakagawa. "Abstract 3214: Definition of biosimilars: Energy Resolved Oxonium Ion Monitoring (Erexim) technology grasps detailed N-glycan microheterogeneity on therapeutic antibodies." In Proceedings: AACR 104th Annual Meeting 2013; Apr 6-10, 2013; Washington, DC. American Association for Cancer Research, 2013. http://dx.doi.org/10.1158/1538-7445.am2013-3214.

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Sakai, Kiminori, and Takashi Tokumasu. "Molecular Dynamics Study of Oxygen Permeation Through the Ionomer of PEFC Catalyst Layer." In ASME-JSME-KSME 2011 Joint Fluids Engineering Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/ajk2011-36020.

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Polymer electrolyte membrane fuel cell (PEFC) is focused worldwide as the energy conversion device of next generation. In the PEFC cathode catalyst layer, an ionomer with which the catalyst is covered is very important on the point of transferring protons to the catalytic surface on the cathode side. On the other hand, it is said that an ionomer interferes with oxygen permeation to the catalytic surface. The mechanism of oxygen permeation through an ionomer was not analyzed in detail because it is too small to research by experiment. Moreover molecular dynamics simulation of the catalyst layer
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Matthews, K. "Oxonica: small & medium enterprises." In SMEs and Micro/Nanotechnology. IEE, 2005. http://dx.doi.org/10.1049/ic:20050013.

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Reports on the topic "Oxonium"

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Hegge, Joachim, Berthoid Hoge, Jeffrey A. Sheehy, Karl O. Christe, and Rolf Minkwitz. Synthesis and Characterization of the First Examples of Perfluoroalkyl Substituted Trialkyl-Oxonium Salts, (CH3)2OCF3(+)Sb2F11(-) and (CH3)2OCF(CF3)2(+) Sb2F11(-). Defense Technical Information Center, 2001. http://dx.doi.org/10.21236/ada409720.

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