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Matthewman EL, Kapila B, Grant ML, Weber CC. The amphiphilic nanostructure of ionic liquids affects the dehydration of alcohols. Chem Commun (Camb) 2022; 58:13572-13575. [PMID: 36412193 DOI: 10.1039/d2cc04854j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The effect of the amphiphilic nanostructure of ionic liquids on the dehydration of secondary alcohols to alkenes has been investigated. The influence of these nanostructures was inverted when an acid catalyst was added to the reaction. This phenomenon was ascribed to a balance between ion-solute interactions and the formation of solute-catalyst hydrogen bonds, highlighting the complex interplay between interactions and reaction outcomes in these nanostructured solvent systems.
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Affiliation(s)
- Emma L Matthewman
- School of Chemical Sciences, The University of Auckland, Auckland, New Zealand. .,MacDiarmid Institute for Advanced Materials and Nanotechnology, New Zealand
| | - Bhavana Kapila
- School of Science, Auckland University of Technology, Auckland, New Zealand
| | - Mason L Grant
- School of Chemical Sciences, The University of Auckland, Auckland, New Zealand. .,MacDiarmid Institute for Advanced Materials and Nanotechnology, New Zealand
| | - Cameron C Weber
- School of Chemical Sciences, The University of Auckland, Auckland, New Zealand. .,MacDiarmid Institute for Advanced Materials and Nanotechnology, New Zealand
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2
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Coney MD, Morris DC, Gilbert A, Prescott SW, Haines RS, Harper JB. Effects of Ionic Liquids on the Nucleofugality of Chloride. J Org Chem 2021; 87:1767-1779. [PMID: 34756050 DOI: 10.1021/acs.joc.1c02043] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The nucleofugality of chloride has been measured in solvent mixtures containing ionic liquids for the first time, allowing reactivity in these solvents to be put in context with molecular solvents. Using well-described electrofuges, solvolysis rate constants were determined in mixtures containing different proportions of ethanol and the ionic liquid 1-butyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide; the different solvent effects observed as the mixture changed could be explained using interactions of the ionic liquid with species along the reaction coordinate, determined using temperature dependent kinetic studies. The solvolysis data allowed determination of the nucleofugality of chloride in these mixtures, which varied with the proportion of salt in the reaction mixture, demonstrating quantitatively the importance of the amount of ionic liquid in the reaction mixture in determining reaction outcome. Nucleofugality data for chloride were determined in seven further ionic liquids, with the reactivity shown to vary over more than an order of magnitude. This outcome illustrates that the components of the ionic liquid are critical in determining reaction outcome. Overall, this work quantitatively extends the understanding of solvent effects in ionic liquids and demonstrates the potential for such information to be used to rationally select an ionic liquid to control reaction outcome.
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3
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Marullo S, D'Anna F, Rizzo C, Billeci F. Ionic liquids: "normal" solvents or nanostructured fluids? Org Biomol Chem 2021; 19:2076-2095. [PMID: 33606870 DOI: 10.1039/d0ob02214d] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Ionic liquids (ILs) are a class of non-conventional solvents, which, for almost two decades, have continued to generate burgeoning interest in different fields of present-day chemical research with few similar precedents. Among the various aspects related to ILs, a topic worthy of in-depth analysis is their influence on organic reactivity and reaction rates. In light of this, the present short review aims to provide an overview of the literature from 2010 to the present day that addresses this issue. In particular, we herein present two main different viewpoints by which the solvent effect of ILs is explained: the first is mainly based on considering the bulk polarity of ILs and linear solvation energy relationships, while the other treats ILs as nanostructured fluids. In both cases, studies dealing with IL mixtures are also covered. Finally, literature addressing the area of supramolecular catalysis "by" or "in" ILs is also reported. This is one of the few reviews covering these specific aspects, aiming to provide a useful framework to guide future research into the effects of ILs on organic reactivity.
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Affiliation(s)
- Salvatore Marullo
- Università degli Studi di Palermo, Dipartimento STEBICEF, Viale delle Scienze, Ed. 17, 90128 Palermo, Italy.
| | - Francesca D'Anna
- Università degli Studi di Palermo, Dipartimento STEBICEF, Viale delle Scienze, Ed. 17, 90128 Palermo, Italy.
| | - Carla Rizzo
- Università degli Studi di Palermo, Dipartimento STEBICEF, Viale delle Scienze, Ed. 17, 90128 Palermo, Italy.
| | - Floriana Billeci
- Università degli Studi di Palermo, Dipartimento STEBICEF, Viale delle Scienze, Ed. 17, 90128 Palermo, Italy.
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4
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Yalcin D, Welsh ID, Matthewman EL, Jun SP, Mckeever-Willis M, Gritcan I, Greaves TL, Weber CC. Structural investigations of molecular solutes within nanostructured ionic liquids. Phys Chem Chem Phys 2020; 22:11593-11608. [PMID: 32400798 DOI: 10.1039/d0cp00783h] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Ionic liquids (ILs) containing sufficiently long alkyl chains form amphiphilic nanostructures with well-defined polar and non-polar domains. Here we have explored the robustness of these amphiphilic nanostructures to added solutes and gained insight into how the nature of the solute and IL ions affect the partitioning of these solutes within the nanostructured domains of ILs. To achieve this, small angle X-ray scattering (SAXS) investigations were performed and discussed for mixtures of 9 different molecular compounds with 6 different ILs containing imidazolium cations. The amphiphilic nanostructure of ILs persisted to high solute concentrations, over 50 mol% of added solute for most 1-butyl-3-methylimidazolium ILs and above 80 mol% for most 1-decyl-3-methylimidazolium ILs. Solute partitioning within these domains was found to be controlled by the inherent polarity and size of the solute, as well as specific interactions between the solute and IL ions, with SAXS results corroborated with IR spectroscopy and molecular dynamics simulations. Molecular dynamics simulations also revealed the ability to induce π+-π+ stacking between imidazolium cations through the use of these added molecular compounds. Collectively, these results provide scope for the selection of IL ions to rationally influence and control the partitioning behaviour of given solutes within the amphiphilic nanostructure of ILs.
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Affiliation(s)
- Dilek Yalcin
- School of Science, RMIT University, Melbourne, Australia
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5
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Hong SK, Park W, Park YS. Asymmetric synthesis of 4-aryl dihydroisoquinolin-3-ones and 2-aryl morpholin-3-ones using AgOTf-activated α-bromo arylacetate. Tetrahedron 2020. [DOI: 10.1016/j.tet.2019.130841] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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6
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Weber CC, Brooks NJ, Castiglione F, Mauri M, Simonutti R, Mele A, Welton T. On the structural origin of free volume in 1-alkyl-3-methylimidazolium ionic liquid mixtures: a SAXS and 129Xe NMR study. Phys Chem Chem Phys 2019; 21:5999-6010. [PMID: 30809621 DOI: 10.1039/c9cp00587k] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ionic liquid (IL) mixtures enable the design of fluids with finely tuned structural and physicochemical properties for myriad applications. In order to rationally develop and design IL mixtures with the desired properties, a thorough understanding of the structural origins of their physicochemical properties and the thermodynamics of mixing needs to be developed. To elucidate the structural origins of the excess molar volume within IL mixtures containing ions with different alkyl chain lengths, 3 IL mixtures containing 1-alkyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide ILs have been explored in a joint small angle X-ray scattering (SAXS) and 129Xe NMR study. The apolar domains of the IL mixtures were shown to possess similar dimensions to the largest alkyl chain of the mixture with the size evolution determined by whether the shorter alkyl chain was able to interact with the apolar domain. 129Xe NMR results illustrated that the origin of excess molar volume in these mixtures was due to fluctuations within these apolar domains arising from alkyl chain mismatch, with the formation of a greater number of smaller voids within the IL structure. These results indicate that free volume effects for these types of mixtures can be predicted from simple considerations of IL structure and that the structural basis for the formation of excess molar volume in these mixtures is substantially different to IL mixtures formed of different types of ions.
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Affiliation(s)
- Cameron C Weber
- School of Science, Auckland University of Technology, Auckland, New Zealand
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7
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Low K, Wylie L, Scarborough DLA, Izgorodina EI. Is it possible to control kinetic rates of radical polymerisation in ionic liquids? Chem Commun (Camb) 2018; 54:11226-11243. [PMID: 30159564 DOI: 10.1039/c8cc02012d] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Experimental studies have noted the often surprising and unpredictable effect of ionic liquids as solvents on reaction kinetics for radical polymerisation. We theoretically investigate the energetic and structural effects of ionic liquids, both protic and aprotic, on radical stability, presenting stabilisation of the radical by the ionic liquid by up to -78.0 kJ mol-1. Kinetic data relating to propagating systems for several industrially viable monomers indicate that propagation rates can be increased or decreased (by up to 6 orders of magnitude) depending on the monomer and ionic liquid combination. The interplay of activation entropy and activation enthalpy, much of which depends on hydrogen bonding between the solvent and reactants, play a crucial role in controlling reaction kinetics. It is concluded that the use of cheaper protic ionic liquids as solvents may be viable for improved kinetic control over radical reactions.
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Affiliation(s)
- Kaycee Low
- Monash Computational Chemistry Group, School of Chemistry, Monash University, 17 Rainforest Walk, Clayton, Victoria 3800, Australia.
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8
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A Greener and Efficient Method for Nucleophilic Aromatic Substitution of Nitrogen-Containing Fused Heterocycles. Molecules 2018; 23:molecules23030684. [PMID: 29562645 PMCID: PMC6017854 DOI: 10.3390/molecules23030684] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Revised: 03/12/2018] [Accepted: 03/16/2018] [Indexed: 01/12/2023] Open
Abstract
A simple and efficient methodology for the nucleophilic aromatic substitution of nitrogen-containing fused heterocycles with interesting biological activities has been developed in an environmentally sound manner using polyethylene glycol (PEG-400) as the solvent, leading to the expected compounds in excellent yields in only five minutes.
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9
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Azov VA, Egorova KS, Seitkalieva MM, Kashin AS, Ananikov VP. "Solvent-in-salt" systems for design of new materials in chemistry, biology and energy research. Chem Soc Rev 2018; 47:1250-1284. [PMID: 29410995 DOI: 10.1039/c7cs00547d] [Citation(s) in RCA: 81] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Inorganic and organic "solvent-in-salt" (SIS) systems have been known for decades but have attracted significant attention only recently. Molten salt hydrates/solvates have been successfully employed as non-flammable, benign electrolytes in rechargeable lithium-ion batteries leading to a revolution in battery development and design. SIS with organic components (for example, ionic liquids containing small amounts of water) demonstrate remarkable thermal stability and tunability, and present a class of admittedly safer electrolytes, in comparison with traditional organic solvents. Water molecules tend to form nano- and microstructures (droplets and channel networks) in ionic media impacting their heterogeneity. Such microscale domains can be employed as microreactors for chemical and enzymatic synthesis. In this review, we address known SIS systems and discuss their composition, structure, properties and dynamics. Special attention is paid to the current and potential applications of inorganic and organic SIS systems in energy research, chemistry and biochemistry. A separate section of this review is dedicated to experimental methods of SIS investigation, which is crucial for the development of this field.
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Affiliation(s)
- Vladimir A Azov
- N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, Moscow 119991, Russia.
| | - Ksenia S Egorova
- N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, Moscow 119991, Russia.
| | - Marina M Seitkalieva
- N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, Moscow 119991, Russia.
| | - Alexey S Kashin
- N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, Moscow 119991, Russia.
| | - Valentine P Ananikov
- N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, Moscow 119991, Russia. and Department of Chemistry, Saint Petersburg State University, Stary Petergof, 198504, Russia
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10
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Gazitúa M, Tapia RA, Contreras R, Campodónico PR. Effect of the nature of the nucleophile and solvent on an SNAr reaction. NEW J CHEM 2018. [DOI: 10.1039/c7nj03212a] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The reaction of 2,4-dinitrobenzenesulfonyl chloride toward propylamine was kinetically evaluated in 19 organic solvents and 10 ionic liquids as reaction media.
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Affiliation(s)
- Marcela Gazitúa
- Centro de Química Médica
- Facultad de Medicina
- Clínica Alemana Universidad del Desarrollo
- Santiago
- Chile
| | - Ricardo A. Tapia
- Facultad de Química
- Pontificia Universidad Católica de Chile
- Santiago
- Chile
| | - Renato Contreras
- Departamento de Química, Facultad de Ciencias
- Universidad de Chile
- Santiago
- Chile
| | - Paola R. Campodónico
- Centro de Química Médica
- Facultad de Medicina
- Clínica Alemana Universidad del Desarrollo
- Santiago
- Chile
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11
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Sudarsanam P, Zhong R, Van den Bosch S, Coman SM, Parvulescu VI, Sels BF. Functionalised heterogeneous catalysts for sustainable biomass valorisation. Chem Soc Rev 2018; 47:8349-8402. [DOI: 10.1039/c8cs00410b] [Citation(s) in RCA: 367] [Impact Index Per Article: 61.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Functionalised heterogeneous catalysts show great potentials for efficient valorisation of renewable biomass to value-added chemicals and high-energy density fuels.
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Affiliation(s)
- Putla Sudarsanam
- Centre for Surface Chemistry and Catalysis
- Faculty of Bioscience Engineering
- Heverlee
- Belgium
| | - Ruyi Zhong
- Department of Chemistry
- Southern University of Science and Technology
- Shenzhen
- China
- Dalian Institute of Chemical Physics
| | - Sander Van den Bosch
- Centre for Surface Chemistry and Catalysis
- Faculty of Bioscience Engineering
- Heverlee
- Belgium
| | - Simona M. Coman
- University of Bucharest
- Department of Organic Chemistry
- Biochemistry and Catalysis
- Bucharest 030016
- Romania
| | - Vasile I. Parvulescu
- University of Bucharest
- Department of Organic Chemistry
- Biochemistry and Catalysis
- Bucharest 030016
- Romania
| | - Bert F. Sels
- Centre for Surface Chemistry and Catalysis
- Faculty of Bioscience Engineering
- Heverlee
- Belgium
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12
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Li X, Li S, Gao G, Wu D, Lan J, Wang R, You J. High-Performance Ruthenium Sensitizers Containing Imidazolium Counterions for Efficient Dye Sensitization in Water. CHEMSUSCHEM 2017; 10:2914-2921. [PMID: 28580757 DOI: 10.1002/cssc.201700579] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2017] [Revised: 05/16/2017] [Indexed: 06/07/2023]
Abstract
A new type of water-soluble ruthenium sensitizers incorporating imidazolium counterions, denoted [DMPI]2 -Ru and [DMHI]2 -Ru, has been developed, which can be efficiently adsorbed onto TiO2 photoanodes in aqueous solution. Owing to the good thermal stability of imidazolium, [DMPI]2 -Ru adsorbed on TiO2 has a higher decomposition temperature than N719 dye [di(tetrabutylammonium) cis-di(thiocyanato)bis(2,2'-bipyridine-4,4'-dicarboxylato)ruthenium(II)]. When using organic solvent-based I- /I3- electrolytes, solars cell based on [DMPI]2 -Ru-sensitized TiO2 in water show high power conversion efficiencies (PCE) of up to 10.2 %, which is higher than that of N719 (9.9 %) under the common conditions for dye sensitization in organic solvent. [DMHI]2 -Ru, with poorer water solubility than [DMPI]2 -Ru, gives a smaller dye-adsorption amount on TiO2 and thus a lower PCE of 9.4 %. From the viewpoint of safety and environmental impact, the fabrication of dye-sensitized solar cells (DSSCs) by using water as solvent is undoubtedly a preferable strategy. Although the [DMPI]2 -Ru-based device fabricated by using water as the solvent for both the dye-sensitization process and the electrolyte gives a relatively low efficiency, it provides a promising approach for the practical application of DSSCs.
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Affiliation(s)
- Xiaoyu Li
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, PR China
| | - Shiqing Li
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, PR China
| | - Ge Gao
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, PR China
| | - Di Wu
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, PR China
| | - Jingbo Lan
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, PR China
| | - Ruilin Wang
- College of Materials Science and Engineering, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, PR China
| | - Jingsong You
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, PR China
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13
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Keaveney ST, Haines RS, Harper JB. Ionic liquid solvents: the importance of microscopic interactions in predicting organic reaction outcomes. PURE APPL CHEM 2017. [DOI: 10.1515/pac-2016-1008] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractIonic liquids are attractive alternatives to molecular solvents as they have many favourable physical properties and can produce different organic reaction outcomes compared to molecular solvents. Thus far, interactions between the ionic liquid components and specific sites (such as charged centres, lone pairs and π systems) on the reagents and transition state have been identified as affecting reaction outcome; a comprehensive understanding of these interactions is necessary to allow prediction of ionic liquid solvent effects. This manuscript summarises our recent progress in the development of a framework for predicting the effect of an ionic liquid solvent on the outcome of organic processes. There will be a particular focus on the importance of the different interactions between the ionic liquid components and the species along the reaction coordinate that are responsible for the changes in reaction outcome observed in the cases described.
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Affiliation(s)
- Sinead T. Keaveney
- School of Chemistry, University of New South Wales, UNSW Sydney 2052, Australia
| | - Ronald S. Haines
- School of Chemistry, University of New South Wales, UNSW Sydney 2052, Australia
| | - Jason B. Harper
- School of Chemistry, University of New South Wales, UNSW Sydney 2052, Australia
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14
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Keaveney ST, Greaves TL, Kennedy DF, Harper JB. Understanding the Effect of Solvent Structure on Organic Reaction Outcomes When Using Ionic Liquid/Acetonitrile Mixtures. J Phys Chem B 2016; 120:12687-12699. [PMID: 27973829 DOI: 10.1021/acs.jpcb.6b11090] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The rate constant for the reaction between hexan-1-amine and 4-methoxybenzaldehyde was determined in ionic liquids containing an imidazolium cation. The effect on the rate constant of increasing the length of the alkyl substituent on the cation was examined in a number of ionic liquid/acetonitrile mixtures. In general it was found that there was no significant effect of changing the alkyl substituent on the rate constant of this process, suggesting that any nanodomains in these mixtures do not have a significant effect on the outcome of this process. A series of small-angle X-ray scattering and wide-angle X-ray scattering experiments were performed on mixtures of the ionic liquid 1-butyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide ([Bmim][N(CF3SO2)2]) and acetonitrile; this work indicated that the main structural changes in the mixtures occur by about a 0.2 mole fraction of ionic liquid in the mixture (χIL). This region at which the main changes in the solvent structuring occurs corresponds to the region at which the main changes in the rate constant and activation parameters occur for SN2 and condensation reactions examined previously; this is the first time that such a correlation has been observed. To examine the ordering of the solvent about the nucleophile hexan-1-amine, WAXS experiments were performed on a number of [Bmim][N(CF3SO2)2]/acetonitrile/hexan-1-amine mixtures, where it was found that some of the patterns featured asymmetric peaks as well as additional peaks not observed in the [Bmim][N(CF3SO2)2]/acetonitrile mixtures; this suggests that the addition of hexan-1-amine to the mixture affects the bulk structure of the liquid. The SAXS/WAXS patterns of mixtures of 1-butyl-2,3-dimethylimidazolium bis(trifluoromethanesulfonyl)imide ([Bm2im][N(CF3SO2)2]) and acetonitrile were also determined, with the results suggesting that [Bm2im][N(CF3SO2)2] is more ordered than [Bmim][N(CF3SO2)2] due to an enhancement in the short-range interactions.
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Affiliation(s)
- Sinead T Keaveney
- School of Chemistry, University of New South Wales , Sydney, NSW 2052, Australia
| | - Tamar L Greaves
- School of Science, College of Science, Engineering and Health, RMIT University , Melbourne, VIC 3001, Australia
| | | | - Jason B Harper
- School of Chemistry, University of New South Wales , Sydney, NSW 2052, Australia
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15
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Alarcón-Espósito J, Contreras R, Tapia RA, Campodónico PR. Gutmann's Donor Numbers Correctly Assess the Effect of the Solvent on the Kinetics of SNAr Reactions in Ionic Liquids. Chemistry 2016; 22:13347-51. [DOI: 10.1002/chem.201602237] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2016] [Indexed: 11/05/2022]
Affiliation(s)
- Jazmín Alarcón-Espósito
- Departamento de Química, Facultad de Ciencias; Universidad de Chile, Casilla; 653 Santiago Chile
| | - Renato Contreras
- Departamento de Química, Facultad de Ciencias; Universidad de Chile, Casilla; 653 Santiago Chile
| | - Ricardo A. Tapia
- Facultad de Química; Pontificia Universidad Católica de Chile, Código Postal; 7820436 Santiago Chile
| | - Paola R. Campodónico
- Centro de Química Médica, Facultad de Medicina; Clínica Alemana Universidad del Desarrollo, Código Postal; 771-0162 Santiago Chile
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16
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Matthews RP, Villar-Garcia IJ, Weber CC, Griffith J, Cameron F, Hallett JP, Hunt PA, Welton T. A structural investigation of ionic liquid mixtures. Phys Chem Chem Phys 2016; 18:8608-24. [DOI: 10.1039/c6cp00156d] [Citation(s) in RCA: 81] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The role of hydrogen bonding, π+–π+ stacking and anion–π+ interactions on the structure of ionic liquid mixtures has been elucidated through a combined theoretical and experimental approach.
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Affiliation(s)
| | | | | | | | - Fiona Cameron
- Department of Chemistry
- Imperial College London
- London
- UK
| | - Jason P. Hallett
- Department of Chemistry
- Imperial College London
- London
- UK
- Department of Chemical Engineering
| | | | - Tom Welton
- Department of Chemistry
- Imperial College London
- London
- UK
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17
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Priede E, Zicmanis A. One-Pot Three-Component Synthesis ofHantzsch1,4-Dihydropyridines Promoted by Dimethyl Phosphate Ionic Liquids. Helv Chim Acta 2015. [DOI: 10.1002/hlca.201500009] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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18
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Affiliation(s)
- Robert Hayes
- Discipline
of Chemistry, The University of Newcastle, NSW 2308, Callaghan, Australia
| | - Gregory G. Warr
- School
of Chemistry, The University of Sydney, NSW 2006, Sydney, Australia
| | - Rob Atkin
- Discipline
of Chemistry, The University of Newcastle, NSW 2308, Callaghan, Australia
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19
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Kimball JD, Raut S, Jameson LP, Smith NW, Gryczynski Z, Dzyuba SV. BODIPY-BODIPY dyad: assessing the potential as a viscometer for molecular and ionic liquids. RSC Adv 2015; 5:19508-19511. [PMID: 25844163 PMCID: PMC4381807 DOI: 10.1039/c4ra09757b] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2014] [Accepted: 02/10/2015] [Indexed: 12/18/2022] Open
Abstract
A symmetrical BODIPY-BODIPY dyad with a diyne linker was prepared in two steps; the lifetime decay of this rotor appeared to correlate with the viscosity of the media, thus making this dyad a suitable small molecule viscometer for molecular solvents. The potential of using the rotor to probe the viscosity of ionic liquids was also investigated.
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Affiliation(s)
- Joseph D. Kimball
- Department of Physics and Astronomy , Texas Christian University , Fort Worth , TX 76129 , USA . ; Fax: +1 817 257 7742 ; Tel: +1 817 257 4209
| | - Sangram Raut
- Department of Physics and Astronomy , Texas Christian University , Fort Worth , TX 76129 , USA . ; Fax: +1 817 257 7742 ; Tel: +1 817 257 4209
| | - Laramie P. Jameson
- Department of Chemistry , Texas Christian University , Fort Worth , TX 76129 , USA . ; Fax: +1 817 257 5851 ; Tel: +1 817 257 6218
| | - Nicholas W. Smith
- Department of Chemistry , Texas Christian University , Fort Worth , TX 76129 , USA . ; Fax: +1 817 257 5851 ; Tel: +1 817 257 6218
| | - Zygmunt Gryczynski
- Department of Physics and Astronomy , Texas Christian University , Fort Worth , TX 76129 , USA . ; Fax: +1 817 257 7742 ; Tel: +1 817 257 4209
| | - Sergei V. Dzyuba
- Department of Chemistry , Texas Christian University , Fort Worth , TX 76129 , USA . ; Fax: +1 817 257 5851 ; Tel: +1 817 257 6218
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Pal AK, Hanan GS. Stereoselective formation of a meso-diruthenium(ii,ii) complex and tuning the properties of its monoruthenium analogues. Dalton Trans 2014; 43:6567-77. [DOI: 10.1039/c4dt00112e] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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Gazitúa M, Tapia RA, Contreras R, Campodónico PR. Mechanistic pathways of aromatic nucleophilic substitution in conventional solvents and ionic liquids. NEW J CHEM 2014. [DOI: 10.1039/c4nj00130c] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Solvation effects on the reaction mechanism for nucleophilic substitution reactions have been kinetically evaluated in conventional solvents and ionic liquids.
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Affiliation(s)
- Marcela Gazitúa
- Centro de Química Médica
- Facultad de Medicina
- Clínica Alemana Universidad del Desarrollo
- Santiago, Chile
| | - Ricardo A. Tapia
- Facultad de Química
- Pontificia Universidad Católica de Chile
- Santiago, Chile
| | - Renato Contreras
- Departamento de Química
- Facultad de Ciencias
- Universidad de Chile
- Santiago, Chile
| | - Paola R. Campodónico
- Centro de Química Médica
- Facultad de Medicina
- Clínica Alemana Universidad del Desarrollo
- Santiago, Chile
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