Synonymer & Information om | Engelska ordet BASICITY

Exempel på hur man kan använda BASICITY i en mening

• A pH indicator is a halochromic chemical compound added in small amounts to a solution so the pH (acidity or basicity) of the solution can be determined visually or spectroscopically by changes in absorption and/or emission properties.
• These terms, especially their abstract noun forms nucleophilicity and electrophilicity, emphasize the kinetic aspect of reactivity, while the Lewis basicity and Lewis acidity emphasize the thermodynamic aspect of Lewis adduct formation.
• Because of its basicity, DMAP is a useful nucleophilic catalyst for a variety of reactions such as esterifications with anhydrides, the Baylis-Hillman reaction, hydrosilylations, tritylation, the Steglich rearrangement, Staudinger synthesis of β-lactams and many more.
• Unlike alpha, monobasic (containing one amino group per molecule) amino acids, these amino (or imino) acids' nitrogens have inconstant basicity, which results in partial reaction with formaldehyde.
• Preparing anhydrous samples is of interest as the basicity of fluoride increases by more than 20 pK units on passing from aqueous to aprotic solvent.
• The basicity of triphenylmethanol is enhanced due to the formation of a resonance-stabilized carbocation upon breaking of the C–O bond.
• owes its inertness to two factors: (i) it is symmetrical so that the negative charge is distributed equally over four atoms, and (ii) it is composed of highly electronegative fluorine atoms, which diminish the basicity of the anion.
• It is, nevertheless, possible to estimate its basicity in an experiment in which amine pairs (the quinuclidonium salt and a reference amine such as diethylamine or indoline) are introduced into a mass spectrometer.
• In other words, the alpha effect refers to nucleophiles presenting higher nucleophilicity than the predicted value obtained from the Brønsted basicity.
• In keeping with its high basicity, tricalcium aluminate reacts most strongly with water of all the calcium aluminates, and it is also the most reactive of the Portland clinker phases.
• The converse is also possible as alleviation of alkalinity: electronegative atoms or species (such as fluorine or the nitro group) will have an "electron-withdrawal" effect and thereby reduce the basicity.
• The pnictogens form trifluorides that increase in reactivity and basicity with higher molecular weight, although nitrogen trifluoride resists hydrolysis and is not basic.
• In comparison to other oxygen-centered oxidants (hypohalites, anions of peroxides) and in line with its low basicity, bromite is a rather weak nucleophile.
• Monomethylation may have slight effects on α-amino nitrogen nucleophilicity and basicity, whereas trimethylation (or dimethylation in case of proline) will result in abolition of nucleophilicity and a permanent positive charge on the N-terminal amino group.
• In copolymers, DMAEA improves their nucleophilicity, basicity, water solubility and adhesion to polar negatively charged substrates, as well as dyeability of acrylic fibers with anionic dyes.
• The apparent extraction equilibrium constants depend on the hydrophobicity and acidity of the carboxylic acid, as well as the specific basicity of trioctylamine.
• Four primary modes are generally accepted under MLC: the ligand can (1) act with Lewis acidity, (2) act with Lewis basicity, (3) play a role in aromatization and dearomatization, or (4) be redox non-innocent.
• However, the Lewis basicity of bismuthinidenes, particularly Dostál's N,C,N-coordinated bismuthinidene, allows them to cycle predictably between stable Bi(I) and Bi(III) oxidation states depending on the reaction conditions, allowing them to act as catalysts for a variety of different reactions, including transfer hydrogenations, deoxygenations, hydrodefluorinations, and dihydrogen reduction.
• Illustrative of its low basicity is the ability of water to outcompete perchlorate as a ligand for metal ions is indicated by the multitude of aquo complexes with noncoordinated perchlorate.

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