Acid-base dissociation constants in dipolar aprotic solvents by Kosuke Izutsu

Cover of: Acid-base dissociation constants in dipolar aprotic solvents | Kosuke Izutsu

Published by Blackwell Scientific Publications, Distributors, USA, Publishers" Business Services in Oxford, Boston, Brookline Village, Mass .

Written in English

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Subjects:

  • Dissociation -- Tables.,
  • Acid-base equilibrium -- Tables.

Edition Notes

Book details

Statementcompiled by Kosuke Izutsu.
SeriesChemical data series ;, no. 35, IUPAC chemical data series ;, no. 35.
ContributionsInternational Union of Pure and Applied Chemistry. Commission on Electroanalytical Chemistry.
Classifications
LC ClassificationsQD517 .I98 1990
The Physical Object
Pagination166 p. ;
Number of Pages166
ID Numbers
Open LibraryOL1848908M
ISBN 100632028750
LC Control Number90000253

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Acid-Base Dissociation Constants in Dipolar Aprotic Solvents (IUPAC Chemical Data) 1st Edition by K. Izutsu (Author) ISBN ISBN Why is ISBN important. ISBN. This bar-code number lets you verify that you're getting exactly the right version or edition of a book.

Cited by: Dissociation constants (pKa) of organic acids and bases are listed for 12 aprotic solvents: acetone; acetonitrile; N,N-dimethylacetamide; N,N-dimethylformamide; dimethyl sulfoxide; hexamethylphosphoric triamide; isobutyl methyl ketone; 1-methylpyrrolidinone; nitromethane; propylene.

Acid-Base Dissociation Constants in Dipolar Aprotic Solvents: Izutsu, K.: Books - or: K. Izutsu. Get this from a library. Acid-base dissociation constants in dipolar aprotic solvents. [Kōsuke Izutsu; International Union of Pure and Applied Chemistry. Commission on Electroanalytical Chemistry.].

This new book, in the Chemical Data Series, includes dissociation constants (pKa values) of many acids and conjugate acids of bases in twelve most popular dipolar aprotic solvents.

Autoprotolysis constants are also included. Open Library is an open, editable library catalog, building towards a web page for every book ever published.

Acid-base dissociation constants in dipolar aprotic solvents by Kosuke Izutsu,Blackwell Scientific Publications, Distributors, USA, Publishers' Business Services edition, in Pages: Stanford Libraries' official online search tool for books, media, journals, databases, government documents and more.

Acid-base dissociation constants in dipolar aprotic solvents in. Dissociation constants and assay of weak bases in non-aqueous solvents.

Journal of Pharmaceutical and Biomedical Analysis6 (), DOI: /(88) Paolo Ugo, Salvatore Daniele, Gian-Antonio Mazzocchin, Gino Bontempelli.

Acid-base equilibria in organic by: Get this from a library. Acid-base dissociation constants in dipolar aprotic solvents. [Kosuke Izutsu; Union internationale de chimie pure et appliquée. Commission de chimie électroanalytique.]. IONIC EQUILIBRIA IN PROTIC AND IN DIPOLAR APROTIC SOLVENTS A. PARKER Research School of Chemistry, Australian National University, Canberra, A.C.Australia ABSTRACT 'Chemical interactions' as well as 'physical interactions' play an important part in solvation.

Some equilibria are reversed on transfer froni protic to. Acid dissociation constant according to the Brønsted-Lowry theory. Acid dissociation constant K a (usually expressed as its negative logarithm pK a) is an equilibrium constant that shows how strong an acid HA is in the solvent S: (1) HA + S ⇆ K a A-+ S H + (2) p Cited by: Tables of dissociation constants are given for a wide range of substrates in the most extensively studied non-aqueous solvents, including methanol, dimethylsulphoxide, dimethylformamide, acetonitrile, and tetrahydrofuran.

Equations representing correlations among the solvents. The table above distinguishes between protic and aprotic solvents. For the solvents included in the table, the distinguishing feature is the presence of an -OH group, and that is the most common characteristic of a protic solvent.

However, there are exceptions, such as nitromethane, CH 3 NO 2, which is also considered a protic solvent.

That. MAIN LIBRARY. Perry-Castañeda Library East 21st St. Austin, TX. Phone: () A Guide to IUPAC Nomenclature of Organic Compounds (recommendations ) - A guide to the Blue Book Panico, R.; Powell, W.H. and Richer, J-C. Blackwell Science, [ISBN ] Acid-Base Dissociation Constants in Acid-base dissociation constants in dipolar aprotic solvents book Aprotic Solvents Izutsu, K.

Abstract. Accurate and well-curated experimental pKa data of organic acids and bases in Acid-base dissociation constants in dipolar aprotic solvents book aqueous and non-aqueous media are invaluable in many areas of chemical research, including pharmaceutical, agrochemical, specialty chemical and property prediction research.

In pharmaceutical research, pKa data are relevant in ligand design, protein binding, Cited by: 5. A great majority of the corresponding data are related to water [7,8] and protic organic solvents [, ] or water-organic solvent mixtures, for which dissociation constants are routinely measured in numerous laboratories.

On the other hand, characterisation of acid-base behaviour in pure aprotic organic solvents remained a significant by: 2. In the remaining chapters, dissociation constants of a wide range of acids in three distinct classes of solvents are discussed: protic solvents, such as alcohols, which are strong hydrogen-bond donors; basic, polar aprotic solvents, such as dimethylformamide; and low-basicity and low polarity solvents, such as acetonitrile and tetrahydrofuran.

The thermodynamic first dissociation constants, (s K) H 2 A of thymolsulphonephthalein, an uncharged acid, have been determined spectrophotometrically at 25 °C in aqueous solutions contain 30, 50, 70, and 80 wt% protic solvent (methanol) and in aqueous solutions contain 40, 60, 70, and 80 wt% dipolar aprotic solvent (NN-dimethylformamide)(DMF).

p(s K) H 2 A N Increases gradually. "Acid-base equilibria are one of the most important chemical reactions - affecting living systems through to industrial processes. This book covers everything any scientist would like to know about this topic from structural and solvent effects to the practical determination of dissociation constants/5(2).

Aprotic solvents. Strictly aprotic solvents include the hydrocarbons and their halogen derivatives, which undergo no reaction with added acids or bases. Acid–base equilibrium in these solvents can be investigated only when a second acid–base system is added; the usual reaction A 1 + B 2 ⇄ B 1 + A 2 then takes place.

A protic solvent is a solvent that has a hydrogen atom bound to an oxygen (as in a hydroxyl group), a nitrogen (as in an amine group), or fluoride (as in hydrogen fluoride).In general terms, any solvent that contains a labile H + is called a protic solvent.

The molecules of such solvents readily donate protons (H +) to solutes, often via hydrogen is the most common protic solvent. The present study is a part of our systematic investigation [4, 5] of thermodynamic properties of synthesized biologically active dihydro pyrimidines in dipolar aprotic this paper, the concentration dependence of sound velocity and adiabatic compressibility coefficients for solutions of various substituted dihydro pyrimidines in N, N-dimethylformamide (DMF) and dimethylsulfoxide.

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Full text of "Acid-base behavior in aprotic organic solvents". Abstract. Deprotonation constants of phthalic (H 2 A) and biphthalic (HA −) acids and of mono-protonated (BH +) and di-protonated (BH 2 2+) piperazine acids have been determined at 25 °C by measuring the Emf of galvanic cells comprising H +-sensitive glass GE(H +) and Ag,AgCl electrodes in non-aqueous isodielectric mixtures of protic ethylene glycol (EG) and dipolar aprotic N,N Cited by: Shareable Link.

Use the link below to share a full-text version of this article with your friends and colleagues. Learn more. Properties of Chemicals and Materials: Absorptance Dissociation Constant.

Home **Start Here** More Online Sources; Acid-Base Dissociation Constants in Dipolar Aprotic Solvents. QDI98 (Reference) Reference Book. QDK (Reference) SI Author: Teri Vogel.

Gold Book. Resources amphoteric anionotropic rearrangement annelation annulation annulenes antarafacial anti-Hammond effect aprotic (solvent) aquation Arrhenius equation aryne association asymmetric induction atomic orbital \(\psi\),\(\varphi\),\(\chi\) attachment autocatalytic reaction automerization autoprotolysis autoprotolysis constant.

Acids and bases are ubiquitous in chemistry. Our understanding of them, however, is dominated by their behaviour in water. Transfer to non-aqueous solvents leads to profound changes in acid-base strengths and to the rates and equilibria of many processes: for example, synthetic reactions involving acids, bases and nucleophiles; isolation of pharmaceutical actives through salt formation.

Acid Dissociation Constants in Methanol, Water, bonding activity coefficients which predict closely the effects of anion solvation on acid-base equilibria. water to dipolar aprotic solvents.

Protic solvents have hydrogen bound directly to electronegative atoms, such as oxygen or nitrogen. They are characterized by their ability to form strong hydrogen bonds with suitable acceptors, particularly simple anions.

They include alcohols, formamide and other primary and secondary amides, and formic acid. In methanol, dissociation constants of carboxylic acids, phenols, and protonated. (18) Izutsu K.

IUPAC: Acid–Base Dissociation Constants in Dipolar Aprotic Solvents; Blackewell Science: New York, (19) Donkor K. K.; Kratochvil B. Determination of thermodynamic aqueous acid–base stability constants for several benzimidazole : Carlos H. Ríos Martínez, Christophe Dardonville.

Unlike the acidic dissociation in the gas phase, free molecules and ions do not exist in solution, and therefore the p K a values are solvent dependent. 1e,12 In molecular solvents, the acidic dissociation involves a proton transfer between a Brønsted acid (H–A) and solvent molecule S.

12 In ILs, however, this could be complicated by Cited by: 5. Acids, Bases and Solvent Systems. Bases The "modern" concept of a base in chemistry, stems from Guillaume-François Rouelle who in suggested that a base was a substance which reacted with acids "by giving it a concrete base or solid form" (as a salt).

In addition they gave aqueous solutions which were characterized as slippery to the touch, tasted bitter, changed the colour of indicators. Acid–base reaction - Acid–base reaction - Nonaqueous solvents: Although acid–base properties have been investigated most thoroughly in aqueous solutions, partly because of their practical importance, water is in many respects an abnormal solvent.

In particular, it has a higher dielectric constant (a measure of the ability of the medium to reduce the force between two electric charges. Izutsu Acid-Base Dissociation Constants in Dipolar Aprotic Solvents May 8 Jortner Molecular Electronics Jul Leigh Nomenclature of Inorganic Chemistry (recommendations ) Feb 32 Leigh Principles of Chemical Nomenclature: a Guide to IUPAC Recommendations Jan 30 In acid–base chemistry, homoassociation (an IUPAC term) is an association between a base and its conjugate acid through a hydrogen bond.

The alternate term homoconjugation also has wide usage, but is ambiguous because it has another meaning in organic chemistry (see Conjugated system#Mechanism). Most commonly. In the remaining chapters, dissociation constants of a wide range of acids in three distinct classes of solvents are discussed: protic solvents, such as alcohols, which are strong hydrogen-bond donors; basic, polar aprotic solvents, such as dimethylformamide; and low-basicity and low polarity solvents, such as acetonitrile and tetrahydrofuran/5(3).

Acids and Bases Solvent Effects on Acid-Base Strength Brian G. Cox. The first extensive, systematic coverage of acids and bases in non-aqueous solvents; Presentation and analysis of dissociation constants in different classes of non-aqueous media; Widespread correlations between dissociation constants and acid and solvent type.

Cox’s book focuses on the solution chemistry of acids and bases in non-aqueous solvents. Chapters 1–4 introduce the importance of acid–base reactions in non-aqueous solvents, the. Acids and bases: solvent effects on acid-base strength / Brian G.

Cox. Format Book Edition 1st ed. Estimation of dissociation constants in basic aprotic solvents Acids and bases: solvent effects on acid-base strength. Cox, Brian G. QDC69   Acid-base equilibria are one of the most important chemical reactions - affecting living systems through to industrial processes.

This book covers everything any scientist would like to know about this topic from structural and solvent effects to the practical determination of dissociation constants.3/5(1).The widespread use of non-aqueous solvents, especially dipolar aprotic solvents, began in the s in various fields of pure and applied chemistry and has con-tributed greatly to later advances in chemical sciences and technologies.

From the very beginning, electrochemistry in non-aqueous solutions has played an impor-File Size: 2MB.

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