Anion strong

The presence of a negative charge and an unshared electron pair on carbon makes acetylide anions strongly nucleophilic. As a result, they react with many different kinds of electrophiles. 

As described in Chapter 8, ionic solids contain cations and anions strongly attracted to each other by electrical forces. These forces act between ions rather than between molecules. Ionic solids must be electrically neutral, so their stoichiometries are determined by the charges carried by the positive and negative ions. 

Strong- and weak-base resins exchange anions with their aqueous environment and therefore extract only metals that form anionic complexes in solution. Strong- and weak-base resins display a similar affinity for anionic species, which increases with the charge and the polarizability of the anion. Strong-base resins have quaternary amine functional groups that possess a permanent... 

In chapter 21 we mentioned nitro compounds as promoters of conjugate addition they also stabilise anions strongly but do not usually act as electrophiles so that self-condensation is not found with nitro compounds. The nitro group is more than twice as good as a carbonyl group at stabilising an enolate anion. Nitromethane (p/ a 10) 1 has a lower pKa than malonates 4 (pKa 13). In fact it dissolves in aqueous NaOH as the enolate anion 3 formed in a way 2 that looks like enolate anion formation. 

Fluoride anion strongly interacts with various inorganic and organic boron and silicon compounds. These reactions are the basis for several fluoride sensors. Interaction of fluoride with boron compounds results in electron density redistribution and may also induce structural changes. Formation of fluoride complex by ferrocene derivative (Figure 16.19a) results in a decrease of oxidation potential by 200 mV... 

Type of ion-exchanger Strong cation Strong cation Weak anion Strong anion... 

The nature of the deposited element and the nature of the supporting electrolyte anion strongly influence monolayer electrodeposition behavior as described below. 

These planar U and W forms are more stable than other conformations of these two anions. The geometry of the anions strongly depends on the medium. These findings enable us to better understand initiation and propagation processes. In diene, 1 and substituted alkene (acrylate, 2 2-vi-... 

The counter anion strongly affects the relative rates of elimination/ alkylation (transfer/termination). 

These observations clearly indicate that (in these cases) solvation and ion pairing effects on the cleavage reactivity of radical anions strongly depend upon the localization of the negative charge. 

Anions strongly catalyze mercurations in H2O as a consequence of replacing aquo ligands from the coordination sphere of the Hg ". ... 

Anion Strong base Triethylaminoethyl (TEAE) OCH2CH2N+(CH2CH3)3... 

Typical differential capacity data obtained at the mercury aqueous solution interface using various electrolytes at a concentration of 0.1 M at 25°C are shown in fig. 10.4. The capacity of the interface depends markedly on the nature of the anion at positive potentials. These data demonstrate that the anion strongly... 

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