Relevant bibliographies by topics / Resorcinol in protic and aprotic solvents

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Academic literature on the topic 'Resorcinol in protic and aprotic solvents'

Author: Grafiati
Published: 5 June 2025
Last updated: 24 June 2025

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Journal articles on the topic "Resorcinol in protic and aprotic solvents"

1

Shipra, Baluja. "Ultrasonic studies of resorcinol in protic and aprotic solvents at 40°." Journal of Indian Chemical Society Vol. 79, Feb 2002 (2002): 142–1444. https://doi.org/10.5281/zenodo.5846166.

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Department of Chemistry, Saurashtra University, Rajkot-360 005, India <em>E-mail : </em>shkundal ad1 @sanchernet.in<em><strong>&nbsp;</strong> &nbsp; &nbsp; &nbsp;Fax: </em>91-0281-78512177633 <em>Manuscript received 27 November 2000, accepted 31 May 2001</em> Various acoustical parameters like adiabatic compressibility (Ks)&nbsp;specific impedance (<em>Z</em>), intermolecular free path (L<sub>f</sub>), Rao&#39;s molar sound function <em>(R), </em>relaxation strength <em>(r), </em>the Van der Waals constant <em>(b), </em>internal pressure (&pi;), solvation number (S<sub>n</sub>) etc., of resorcinol solutions (0.1-1.0 mol dm<sup>-3</sup>) in water, methanol, tetrahydrofuran (THF) and 1,4-dioxane have been determined from ultrasonic sound velocity (2 MHz), density and viscosity data at 40<sup>&deg;</sup>. The parameters are correlated with concentration and interpreted in the light of molecular interactions occurring in solutions. It is observed that solvent structure especially in water and methanol systems is disrupted and new structure is formed with resorcinol molecules and chain-like structure is formed in 1,4-dioxane system.
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2

M., KRISHNA PILLAY, та SHANMUGAM K. "Kinetics of Reaction of Triethylammonium Carboxylates with α-Halogeno Carbonyl Compounds in Organic Solvents. Part-4. Effects of Solvents on the Reaction Rate of Triethylammonium Benzoate with Phenacyl Bromide". Journal of Indian Chemical Society Vol. 69, Dec 1992 (1992): 838–40. https://doi.org/10.5281/zenodo.6032436.

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Department of Chemistry, Bbarathidasan University, Tiruchirapalli-620 024 <em>Manuscript received 24 October 1992, revised 24 July 1992, accepted 21 September 1992</em> Kinetics of the reaction of triethylammonium benzoate with phenacyl bromide in different dipolar aprotic and protic solvents have been followed. rile leaction is about 200-400 times faster in aprotic solvent than in protic solvent. In aprotic dipolar solvents the carboxylate anion exists as desolvated one whereas in protic solvents the nucleophile is solvated by hydrogen-bonding thereby decreasing the nucleophilicity of the active species. The correlation of the rate constants with <em>various </em>solvent parameters has been checked.
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M., KRISHNA PILLAY, та SHANMUGAM K. "Kinetics of Reaction of Triethylammonium Carboxylates with α-Halogeno Carbonyl Compounds in Organic Solvents. Part-4. Effects of Solvents on the Reaction Rate of Triethylammonium Benzoate with Phenacyl Bromide". Journal of Indian Chemical Society Vol. 69, Dec 1992 (1992): 838–40. https://doi.org/10.5281/zenodo.6116878.

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Department of Chemistry, Bbarathidasan University, Tiruchirapalli-620 024 <em>Manuscript received 24 October 1990, revised 24 July 1992, accepted 21 September 1992</em> Kinetics of the reaction of triethylammonium benzoate with phenacyl bromide in different dipolar aprotic and protic solvents have been followed. The leaction is about 200-400 times faster in aprotic solvent than in protic solvent. In aprotic dipolar solvents the carboxylate anion exists as desolvated one whereas in protic solvents the nucleophile is solvated by hydrogenbonding thereby decreasing the nucleophilicity of the active species. The correlation of the rate constants with various<em> </em>solvent parameters has been checked.
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Nikolic, Jasmina, Gordana Uscumlic, and Vera Krstic. "Reactivity of cyclohex-1-enylcarboxylic and 2-methylcyclohex-1-enylcarboxylic acids with diazodiphenylmethane in aprotic solvents." Journal of the Serbian Chemical Society 65, no. 12 (2000): 839–46. http://dx.doi.org/10.2298/jsc0012839n.

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Rate constants for the reaction of diazodiphenylmethane with cyclohex-1-enylcarboxylic acid and 2-methylcyclohex-1-enylcarboxylic acid were determined in nine aprotic solvents, as well as in seven protic solvents, at 30?C using the appropriate UV-spectroscopic method. In protic solvents the unsubsituted acid displayed higher reaction rates than the methyl-substituted one. The results in aprotic solvents showed quite the opposite, and the reaction rates were considerably lower. In order to explain the obtained results through solvent effects, reaction rate constants (k) of the examined acids were correlated using the total solvatochromic equation of the form: log k=logk0+s?*+a?+b?, where ?* is the measure of the solvent polarity, a represents the scale of the solvent hydrogen bond donor acidities (HBD) and b represents the scale of the solvent hydrogen bond acceptor basicities (HBA). The correlation of the kinetic data were carried out by means of multiple linear regression analysis and the opposite effects of aprotic solvents, as well as the difference in the influence of protic and aprotic solvents on the reaction of the two examined acids with DDM were discussed. The results presented in this paper for cyclohex-1-enylcarboxylic and 2-methylcyclohex-1-enylcarboxylic acids were compared with the kinetic data for benzoic acid obtained in the same chemical reaction, under the same experimental conditions.
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Roopesh Kumar, L., N. R. Sagar, K. Divya, C. Madhu та Vommina V. Sureshbabu. "Synthesis of an amino phosphinodiselenoic acid ester and β-amino diselenides employing P2Se5". New Journal of Chemistry 44, № 18 (2020): 7261–64. http://dx.doi.org/10.1039/d0nj00012d.

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da Silva, Guilherme C. Q., Thiago M. Cardozo, Giovanni W. Amarante, Charlles R. A. Abreu, and Bruno A. C. Horta. "Solvent effects on the decarboxylation of trichloroacetic acid: insights from ab initio molecular dynamics simulations." Physical Chemistry Chemical Physics 20, no. 34 (2018): 21988–98. http://dx.doi.org/10.1039/c8cp02455c.

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7

Shabanian, Meisam, Hassan Moghanian, Mohsen Hajibeygi, and Azin Mohamadi. "Theoretical Investigation of Solvation Effects on the Tautomerism of Maleic Hydrazide." E-Journal of Chemistry 9, no. 1 (2012): 107–12. http://dx.doi.org/10.1155/2012/976161.

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A DFT study is used to calculate structural data of tautomers of maleic hydrazide (MH) in the gas phase and selected solvents such as benzene (non-polar solvent), tetrahydrofuran (polar aprotic solvent) and methanol (protic solvent), dimethyl sulfoxide (polar aprotic solvent) and water (protic solvent) using PCM model. All tautomers are optimized at the B3LYP/6−31++G(d,p). The results show that the tautomer MH2except in methanol is more stable than the other tautomers but in methanol MH5(Diol) is more stable. In addition, stability of the tautomers in deferent solvents shows interesting results. Variation of dipole moments and NBO charges on atoms in the solvents were studied.
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Favier, Isabelle, and Elisabet Duñach. "New protic salts of aprotic polar solvents." Tetrahedron Letters 45, no. 17 (2004): 3393–95. http://dx.doi.org/10.1016/j.tetlet.2004.03.025.

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Rossini, Emanuele, and Ernst-Walter Knapp. "Proton solvation in protic and aprotic solvents." Journal of Computational Chemistry 37, no. 12 (2016): 1082–91. http://dx.doi.org/10.1002/jcc.24297.

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Khalilian, M. Hossein, Saber Mirzaei, and Avat (Arman) Taherpour. "Comprehensive insights into the structure and coordination behavior of thiosemicarbazone ligands: a computational assessment of the E–Z interconversion mechanism during coordination." New Journal of Chemistry 39, no. 12 (2015): 9313–24. http://dx.doi.org/10.1039/c5nj02041g.

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The calculations transpired that the isomerization mechanism of thiosemicarbazones is influenced by the solvents, in which the inversion and tautomerization path is the likely mechanisms in aprotic and protic solvents, respectively.
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Book chapters on the topic "Resorcinol in protic and aprotic solvents"

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Fawcett, W. Ronald. "Polar Solvents." In Liquids, Solutions, and Interfaces. Oxford University Press, 2004. http://dx.doi.org/10.1093/oso/9780195094329.003.0008.

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Polar solvents are those liquids whose relative permittivity is sufficiently high that electrolytes can be dissolved in them. The best-known example of such a liquid is water. The oxygen end of this simple molecule is electron-rich and can stabilize cations. The hydrogen atoms are electron-poor and thus are involved in the solvation of anions. The structure of pure water is very much influenced by the hydrogen bonding between the negative end of the molecular dipole at oxygen and a hydrogen atom on an adjacent molecule. The special properties of water as a solvent for electrolytes are the central reason for its importance in living systems. There are many other solvents which can be classified as polar. Some of them, such as the alcohols, have the same polar group as the water molecule, namely, the hydroxyl group –OH. These solvents are also involved in hydrogen bonding, and are generally classified as protic. Other examples of protic solvents are simple amides such as formamide and acetamide. In these systems, the protic group is –NH2, the hydrogen atom being involved in hydrogen bonding with the oxygen atom in the carbonyl group on an adjacent molecule. There are other polar solvents which are not protic. These involve liquids with large dipole moments. Some examples are acetonitrile, propylene carbonate, and dimethylsulfoxide. In each case, the solvent molecule possesses an electronegative group which is rich in electrons. The opposite end of the molecule is electron deficient but does not have acidic hydrogen atoms which can participate in hydrogen bonding. This class of solvents is called aprotic. In this chapter, the properties of polar solvents are discussed, especially as they relate to the formation of electrolyte solutions. Polar solvents are arbitrarily defined here as those liquids with a relative permittivity greater than 15. Solvents with zero dipole moment and a relative permittivity close to unity are non-polar. These include benzene, carbon tetrachloride, and cyclohexane. Solvents with relative permittivities between 3 and 5 are weakly polar, and those with values between 5 and 15 are moderately polar. The latter systems are not considered in the discussion in this chapter.
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Keeler, James, and Peter Wothers. "The effects of the solvent." In Why chemical reactions happen. Oxford University Press, 2003. http://dx.doi.org/10.1093/hesc/9780199249732.003.0012.

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This chapter focuses on the effects of the solvent. It regards solvent as a crucial component of reactions while referencing the reaction of t–butyl chloride. The rate of formation of either the substitution or elimination product depends only on the rate of the initial step. The chapter highlights the importance of the solvent being a result of the solubility of one substance in another. It lists different types of solvent as they are classified through their polarity and relative permittivity. Types of solvents include hydrogen bonds, protic solvents, and aprotic solvents. Additionally, the chapter examines the solvating of different ions, acid strengths, and the role of solvents while noting the impact of solvents on the rate of reactions.
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Leitner, Walter. "Fluorous Phases and Compressed Carbon Dioxide as Alternative Solvents for Chemical Synthesis: A Comparison." In Green Chemistry Using Liquid and Supercritical Carbon Dioxide. Oxford University Press, 2004. http://dx.doi.org/10.1093/oso/9780195154832.003.0009.

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The principal goal of basic research in chemical synthesis is the development of efficient tools for functional group transformations and for the assembly of building blocks during the construction of molecules with increasing complexity. Traditionally, new approaches in this area have focused on the quest for new reaction pathways, reagents, or catalysts. Comparably less effort has been devoted to utilize the reaction medium as a strategic parameter, although the use of solvents is often crucial in synthetically useful transformations. The first choice for a solvent during the development of a synthetic procedure is usually an organic liquid, which is selected on the basis of its protic or aprotic nature, its polarity, and the temperature range in which the reaction is expected to proceed. Once the desired transformation is achieved, yield and selectivity are further optimized in the given medium by variation of temperature, concentration, and related process parameters. At the end of the reaction, the solvent must be removed quantitatively from the product using conventional workup techniques like aqueous extraction, distillation, or chromatography. If the synthetic procedure becomes part of a large-scale application, the solvent can sometimes be recycled, but at least parts of it will ultimately end up in the waste stream of the process. Increasing efforts to develop chemical processes with minimized ecological impact and to reduce the emission of potentially hazardous or toxic organic chemicals have stimulated a rapidly growing interest to provide alternatives to this classical approach of synthesis in solution. At the same time, researchers have started to realize that the design and utilization of multifunctional reaction media can add a new dimension to the development of synthetic chemistry. In particular, efficient protocols for phase separations and recovery of reagents and catalysts are urgently required to provide innovative flow schemes for environmentally benign processes or for high-throughput screening procedures. Fluorous liquid phases and supercritical carbon dioxide (sc CO2) have received particular attention among the various reaction media that are discussed as alternatives to classical organic solvents. The aim of this chapter is to compare these two media directly and to critically evaluate their potential for synthetic organic chemistry.
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Conference papers on the topic "Resorcinol in protic and aprotic solvents"

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Gornostaev, Leonid, Darya Tropina, Evgenia Slyusareva, Alena Merezhko, and Marina Gerasimova. "Spectroscopic behavior of pyrrolanthrone and its derivative in aprotic and protic solvents." In XIII International Conference on Atomic and Molecular Pulsed Lasers, edited by Andrei M. Kabanov and Victor F. Tarasenko. SPIE, 2018. http://dx.doi.org/10.1117/12.2303545.

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Rullière, C., A. Declémy, and Ph Kottis. "Time Dependent Fluorescence Shift in Alcoholic Solvents: A Non-Debye Behaviour Related to Hydrogen Bonds." In International Conference on Ultrafast Phenomena. Optica Publishing Group, 1986. http://dx.doi.org/10.1364/up.1986.wf1.

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Time Dependent Fluorescence Shift (TDFS) of a polar compound (AMBO) dissolved in a sequence of polar (protic or aprotic) solvents has been studied. This compound (AMBO) is: shown on fig. 1. In the ground state, the solvent cage surrounding the polar compound has a well defined topology which minimizes the solute-solvent interactions. In the excited state, as shown on fig. 1, large change occurs (charge distribution, dipole moment). As a consequence, the solvent cage has to reorganize in order to minimize this new interaction. The TDFS reflects this change and particularly, its dynamics, related to the motion of the cage. The kinetic theory of TDFS has recently gained new interest {1,2} and our results provide a test of the validity of theoretical approach.
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Farsinezhad, Samira, Prashant Waghmare, Benjamin D. Wiltshire, Saeid Amiri, Sushanta K. Mitra, and Karthik Shankar. "The Wetting Behavior of TiO2 Nanotube Arrays With Perfluorinated Surface Functionalization." In ASME 2014 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/imece2014-39395.

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A facile electrochemical anodization method was used for producing hierarchically textured surfaces based on TiO2 nanotubes in two different configurations. It was found that perfluoro-functionalized TiO2 nanotubes exhibit high static contact angles for a variety of liquids such as apolar, polar aprotic and polar protic solvents. Wenzel and Cassie-Baxter theories were applied for theoretical contact angle calculations for the present study. By using Cassie theories, it is shown that a drop of polar liquid was in a fakir or Cassie-Baxter (CB) state on perfluoro-functionalized nanotube surfaces. The fakir state prevents spreading of the liquid on the surface. On the other hand, the wetting of non-polar liquids such as hexane is characterized by either Wenzel states or transition states characterized by partial imbibition that lie in between the CB and Wenzel states.
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Passino, Sean A., Yutaka Nagasawa, Taiha Joo, and Graham R. Fleming. "Photon echo measurements in liquids using pulses longer than the electronic dephasing time." In International Conference on Ultrafast Phenomena. Optica Publishing Group, 1996. http://dx.doi.org/10.1364/up.1996.wd.4.

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Liquid dynamics has been studied by various time-domain techniques such as photon echoes [1] and dynamic Stokes shift measurement [2], which utilize electronic absorption as a probe. Attempts to measure electronic dephasing times in solution using the standard photon echo technique have been hampered by the rapidity as well as the non-Markovian nature of the dynamics. Much emphasis has been directed toward employing shorter and shorter pulses. However, photon echoes using short pulses often simply measure the ultrafast break up of the intra-molecular vibrational wavepacket created by the large spectral bandwidth of the pulses. Recently, it has been shown that three pulse stimulated photon echo peak shift (3PEPS) measurements give accurate dynamical information on solute-solvent interaction [1,3]. In this technique, peak shifts are determined precisely by simultaneously measuring signals in the phase matching directions –k1+k2+k3 and k1−k2+k3. The peak shift reflects the ability of the system to rephase after evolving in a population state for time, T. That is, the decrease of 3PEPS mirrors the electronic transition frequency correlation function, M(t). Here we report 3PEPS studies on various polar protic and aprotic solvents using 22 fs and 90 fs pulses. It is shown the 3PEPS with pulses much longer than a typical electronic dephasing time still gives accurate information on ultrafast as well as slow dynamics in liquids. The experimental results are consistent with the numerical simulations including finite pulse duration.
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