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Dissertations / Theses on the topic 'Tetraalkylammonium'

Author: Grafiati

Published: 18 May 2024

Last updated: 26 July 2025

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1

Jha, Anupam. "Physical-chemical studies on the various interactions of some metal and tetraalkylammonium salts in different solvent systems." Thesis, University of North Bengal, 2003. http://hdl.handle.net/123456789/702.

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2

Dasgupta, Debasis. "Studies on the transport properties of tetraalkylammonium salts in 2- methoxy ethanol, 1, 2- dimethoxy ethane and their aqueous binary mixtures." Thesis, University of North Bengal, 1987. http://hdl.handle.net/123456789/713.

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3

Victor, Pitchai Joseph. "STUDIES OF SOLVATION PHENOMENA OF IONS-AND ION-PAIRS OF ALKALI AND TETRAALKYLAMMONIUM SALTS IN LOW PERMITTIVITY SOLVENTS." Thesis, University of North Bengal, 2001. http://hdl.handle.net/123456789/742.

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4

Das, Bijan. "Physico - chemical investigations on the ion-solvent interactions of some Tetraalkylammonium and common ions in non-aqueous and mixed binary aqueous solvent systems." Thesis, University of North Bengal, 1992. http://hdl.handle.net/123456789/719.

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5

Dey, Rabindra. "Studies on the ion-solvent interactions of tetraalkylammonium and common ions in tetrahydrofuran and its binary mixtures." Thesis, University of North Bengal, 2005. http://hdl.handle.net/123456789/773.

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6

Silalahi, Imelda. "Photochemical activation of tetraalkylammonium cations by hexachloroplatinate(IV)." Thesis, University of York, 2017. http://etheses.whiterose.ac.uk/17514/.

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Unexpectedly, a Zeise’s salt analogue, the dinuclear, butadiene-bridged complex, trans-eta^2:eta^2-1,3-butadiene-bis(trichloroplatinate(II)) was isolated when [AuCl4] and [PtCl4]2- were reacted together in the presence of the tetrabutylammonium cation. Early observations ruled out the involvement of the gold(III) species in generating the butadiene directly, but it was found to be acting as an oxidising agent facilitating conversion of [PtIICl4]2- to [PtIVCl6]2-, which turned out to be a key observation. Further studies identified the source of the C4 fragment of butadiene as the tetrabutylamm

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7

Roy, Mahendra Nath. "Studies on the ion-solvent interactions of some tetraalkylammonium and common ions in non-aqueous and mixed solvents." Thesis, University of North Bengal, 1993. http://hdl.handle.net/123456789/740.

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8

Nandi, Debasis. "Physico - chemical investigations on the ion-solvent interactions of Tetraalkylammonium and alkali metal halides in non-aqueous solvents and their aqueous binary mixtures." Thesis, University of North Bengal, 1989. http://hdl.handle.net/123456789/718.

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9

Saha, Nirmal. "Ion-solvent interactions of some symmetrical Tetraalkylammonium Bromides in Acetonitrile methanol and their binary mixtures." Thesis, University of North Bengal, 2001. http://hdl.handle.net/123456789/700.

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10

Ballantyne, Andrew David. "The synthesis and physical properties of asymmetric tetraalkylammonium ionic liquids." Thesis, University of Manchester, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.496263.

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Ionic liquids (ILs) are substances composed exclusively of ions that are liquid below 373 K. Room temperature ionic liquids (RTILs) are like ILs but they are also liquid at 298 K. ILs have recently become of interest as a replacement for volatile organic solvents as they generally have little or no vapour pressure and high thermal stabilities meaning that they are more easily contained than traditional solvents. ILs are also of interest in electrochemistry because they can possess large electrochemical windows (EWs) when compared to conventional solvents. This study reports the synthesis of a

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11

Das, Debasis. "Ion association and solvation of Alkali metal and tetraalkylammonium ions in N N Dimethylacetamide and amide-water mixed solvents." Thesis, University of North Bengal, 2003. http://hdl.handle.net/123456789/703.

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12

DANO, CECILE. "Insertion cathodique des ions tetraalkylammonium dans la graphite et le platine : reactivite, fonctionnalisation et applications." Rennes 1, 1998. http://www.theses.fr/1998REN10112.

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Les comportements cathodiques du graphite d'une part et du platine d'autre part, en milieux organiques aprotiques en presence de cations tetraalkylammonium, sont etudies. La reaction d'insertion des cations conduit a une modification de la structure et des proprietes de ces materiaux. La premiere partie de ce memoire est consacree aux composes d'intercalation du graphite (cig). Le premier chapitre regroupe de maniere detaillee les differents types de composes du graphite, des composes covalents aux cig donneurs et accepteurs, et integre leurs syntheses, leurs proprietes et leurs applications.

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13

GONZALEZ, FELIPE J. "Oxydation electrochimique d'arylacetates de tetraalkylammonium dans l'acetonitrile. Modification de surfaces carbonees par greffage covalent de groupements arylmethyles produits par oxydation anodique d'arylacetates." Paris 7, 1996. http://www.theses.fr/1996PA077066.

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L'oxydation anodique des arylacetates de tetraalkylammonium dans l'acetonitrile s'effectue par un mecanisme concerte ou sequentiel de transfert d'electron et coupure de liaison. L'intervention de l'un ou l'autre mecanisme depend de la structure moleculaire du carboxylate et plus particulierement du caractere electroattracteur ou electrodonneur des substituants sur le noyau aromatique. La chimie homogene suivant le processus de decarboxylation est associee a des reactions de solvolyse et de dimerisation faisant intervenir respectivement des carbocations et des radicaux. La consommation de la mo

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14

Shiguihara, Ana Lucia. "Investigação dos processos de intercalação e esfoliação de hexaniobato lamelar e preparação de materiais híbridos com biopolímeros." Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/46/46134/tde-10112010-110227/.

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A presente tese tem como objetivo principal a investigação do processo de intercalação e esfoliação do hexaniobato lamelar em soluções de hidróxidos de tetraalquilamônios e, também, do emprego das partículas do niobato na preparação de materiais híbridos com polissacarídeos. O material de composição H2K2Nb6O17 foi suspenso em soluções aquosas contendo diferentes concentrações dos hidróxidos de tetrametilamônio (TMA+), tetraetilamônio (TEA+) e tetrapropilamônio (TPA+). Após o tempo de reação foram separadas duas frações: o sólido depositado no recipiente e o sobrenadante turvo contendo as partí

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15

Kevin, Chang, and 鄭奎文. "Preparation and Physical Characterization of Tetraalkylammonium Salts of p-Benzoquinoe Derivatives Fused with Sulphur- Containing Heterocycles." Thesis, 1993. http://ndltd.ncl.edu.tw/handle/32604011243847582017.

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碩士<br>淡江大學<br>化學學系<br>81<br>Simple and complex alkylammonium salts of electron acceptors Qmnt (5,10-dihydro-5,10-dioxo-[1,2,-b:4,5-b ]bis[1,4]dithiole- benzo-2, 3,7,8-tetracarbonnitrile) and Qimnt(2,2 -(4,8-dihydro-4,8-dioxo -[1,2-d:4,5-d ]-bis[1,3 ]dithioilebenzo-2,6-diylidene)-bispropandi nitrile) were prepared by reactions of the acceptors with R4NI in acetonitrile. These salts were studied using various techniques, including infrared and electronic absorption spectracopie

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16

Cho-Chin, Young, and 楊朝欽. "Physical Characterization and structure of Tetraalkylammonium Salts of p-Benzoquinoe Fused with Sulphur-Containing Heterocycles by electrocrystallized." Thesis, 1994. http://ndltd.ncl.edu.tw/handle/32849054606809041429.

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碩士<br>淡江大學<br>化學學系<br>82<br>Simple and complex alkylammonium salts of electron acceptors Qimnt(2,2''-(4,8-dihydro-4,8-dioxo-[1,2-d:4,5-d''] -bis[1,3] dithiolebenzo-2,6-diylidene)-bispropanedinitrile were electrocrystallized by reaction of the electron acce- ptor with R4NBr ( R= tetramethylammonium,tetraethylammonium ,tetrapropylammonium, tetrabutylammonium ) in acetonitrile. Physical properties of these crystals were also measured, including infrared spectra , ultraviolet-visible spectra ,

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17

Dreyer, Susanne Elisabeth [Verfasser]. "Aqueous two-phase extraction of proteins and enzymes using tetraalkylammonium based ionic liquids / vorgelegt von Susanne Elisabeth Dreyer." 2008. http://d-nb.info/993350089/34.

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18

Popr, Martin. "Syntéza cyklodextrinových derivátů pro praktické aplikace." Doctoral thesis, 2017. http://www.nusl.cz/ntk/nusl-267013.

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Synthesis of cyclodextrin derivatives for practical applications Abstract The first part of this PhD thesis is focused on the synthesis of a series of monosubstituted tetraalkylammonium cyclodextrin (CD) derivatives. The emphasis was placed on the possible applicability of the synthetic process to multigram or even industrial scale. Monotosylation of the native cyclodextrins (-, -, -) on the primary side of the macrocycle afforded the starting materials. Derivatives with one cationic group were prepared by the reaction with aqueous trimethylamine. The reaction of the mono-Ts-CD with neat N,

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