TENDENCIES OF USE OF THE TERM «QUINONOID»
The term «quinonoid» is normally little used and occupies the
149.000 position in our list of most widely used terms in the
English dictionary.
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quinonoid
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10 ENGLISH BOOKS RELATING TO «QUINONOID»
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quinonoid in the following bibliographical selection. Books relating to
quinonoid and brief extracts from same to provide context of its use in English literature.
1
A Textbook of Physical Chemistry
This is sometimes called as the "middle tint " of the indicator. This applies strictly if
the two colours are of equal intensity. (ii) Quinonoid Theory: The colour in most of
the naturally occurring organic compounds has been attributed to be due to ...
A. S. Negi, S. C. Anand, 1985
Following this rule we cannot use methyl orange and methyl red as indicators for
the titration of acetic acid by a strong base. (B) Quinonoid Theory : Though ionic
theory was successful in correlating the indicator constant (pKIn) and indicator ...
C. Parameshwara Murthy, 2008
Theory. According to this theory, ortho or para quinonoid structures in a
compound are responsible for its colour. The drawback of this theory is that it has
no explanation for deep colour ofazo dyes, which have no quinonoid structure.
BHUPINDER MEHTA, MANJU MEHTA, 2005
\O \NPhX \NPhx/ 1v v XH¢N=0/NHX \ \NPhx/ VI . salts (V) are accorded p-
quinonoid structures because: (1) the conversion of a blue monoacid salt into a
green diacid salt is explainable only by the salification of a basic group forming
part of the ...
5
Conducting Polymers, Fundamentals and Applications: A ...
A- Polarona (Radical Cations) A- Blpolaron* Ideational In general, for most CPs,
two extreme geometric structures are possible, an entirely benzenoid one, and
an entirely quinonoid one, with the quinonoid structure generally possessing a ...
Prasanna Chandrasekhar, 1999
6
Biochemistry and Molecular Biology of Vitamin B6 and ...
In addition to enhancing the binding of L-alanine to AONS, addition of pimeloyl-
CoA to the pre-formed external aldimine complex leads to formation of a
quinonoid intermediate (Figure 2). Pre-steady state kinetic experiments revealed
that the ...
Ana Iriarte, Herbert M. Kagan, Marino Martinez-Carrion, 2000
The hydroxylation is physiologically irreversible and consists of a coupled
oxidation of phenylalanine to tyrosine and of tetrahydrobiopterin to a quinonoid
dihydroderivative with molecular oxygen as the electron acceptor: _ . .
phenylalanine ...
8
The Reaction of 1-aminocyclopropane-1-carboxylate Synthase ...
The Quinonoid Intermediate A quinonoid intermediate is observed with A.max =
500nm when 4|xM ACC synthase is reacted with either 400jjM (59) or 100|iM (
Figure 6) SAM. However no quinonoid appears for the corresponding reaction of
...
Daniel Stephen Malashock, 2007
9
Handbook of Conducting Polymers, Second Edition,
interactions, the double bond character in the quinonoid forms is enough to
overcome the S----H steric interactions and the rings are coplanar in the
quinonoid form. The calculated energy difference between the planar quinonoid
and aromatic ...
10
Medical Laboratory Science : Theory And Practice
S. Auxochrome J group Quinonoid ring /* Chromophore group nh,+ J a" f t (a)
Basic fuchsin Acid radicle Table 6.1 Cl number and solubility table of some
common. Fig. 6.2 Example of quinonoid dyes. is colourless; and vice- versa for
acid dyes.
NEWS ITEMS WHICH INCLUDE THE TERM «QUINONOID»
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quinonoid is used in the context of the following news items.
Question Corner - Turmeric
However, the loss of proton at any of the phenolic sites converts the phenolate ion from benzenoid structure into a quinonoid one. This means a change at the ... «The Hindu, Sep 10»
