Since wines are generally below 4.0 on the logarithmic pH scale, there is not much phenolate
around--only about one molecule in 100,000.
Consequently at pH 11 an increased repulsion between the phenolate
and photocatalyst's anionic species may cause the noted comparative decrease in phenol removal (Fig.
Careful examination of the packing diagram reveals that one hydrogen atom is shared between two phenolate
oceanica fibres is a chemisorption process involving valency forces through sharing or exchange of electrons between phenolate
anions and sorbent biopolymers.
They complexes with six-membered rings by coordination to the carbonyl and phenolate
ion in C(4) and C(5), or in C5 and C6 [3, 4].
We therefore speculated that the contraction was caused by the hydrogen bonding between the dissociated phenolate
group and the undissociated phenol group .
Table-2: between 0.02 and 0.06 A for the weakly-binding water and phenol, and between 0.22 and 0.45 A for the more properly bound nitrite, phenolate
and imidazole - with the maximum distance seen for the O-nitrite adduct.
PPO was dissolved in NaOH solution to form phenolate
anion and PPOE was synthesized by ring-opening reaction between phenolate
anion and EPN.
This is further supported by the shifting of phenolic v(C-O) towards higher frequency, indicating the coordination of the phenolate
oxygen to metal ion.
Quan, "FptA, the Fe(III)-pyochelin receptor of Pseudomonas aeruginosa: a phenolate
siderophore receptor homologous to hydroxamate siderophore receptors," Journal of Bacteriology, vol.
Thymol is a phenol which can dissociate to a phenolate
ion under physiological conditions.
It is prepared commercially by heating sodium phenolate
(the sodium salt of phenol) with carbon dioxide under pressure to from sodium salicylic, which is treated with sulfuric acid to liberate salicylic acid.