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(ˈkwɪn ɔɪd)
1. quinonoid.
2. a quinonoid substance.
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References in periodicals archive ?
1] are attributed to C-N stretching vibration of benzene ring and stretching of C = N (N = quinoid = N), respectively.
The position of benzenoid / quinoid band was shown by peak 360 closely related to the reported benzenoid / quinoid band at 352 [39].
Quinoid redox cycling as a mechanism for sustained free radical generation by inhaled airborne particulate matter.
The following will concentrate on the enzymes that can affect BH4 levels and its relationship to histamine; Methyltetrahydrafolate reductase (MTHFR), dihydropteridine reductase, dihydrofolate reductase (DHFR), and quinoid dihydropteridine reductase (QDPR) heavily influence BH4 (tetrahydrobiopterin) synthesis and recycling.
1] is due to N-H stretching mode, C=N, and C=C stretching mode for the quinoid (Q), and benzoid (B) rings occur at 1596 and 1511 [cm.
The number before the resorcinol symbols in the description of the molecular structure indicates the number of the corresponding resorcinol moieties or oxidation products in the molecule; O indicates C-O coupling (grey background); qqq marks the third quinoid structure in the molecule; confirmed molecular formulas with mass accuracy < 5 ppm are in bold; nd--not detected; dna--data not analysed.
In Flavonoids Due to oxidation of one aromatic ring into quinoid form, shows different colour in different colour in different mediums such as red chelates absorption shows finding of flavonoids.
Stolz; Effects of different quinoid redox mediators on the anaerobic reduction of azo dyes by bacteria.
Therefore, vulcanization systems may include organic accelerators along with resins, zinc oxide, zinc oxide and sulfur, and quinoid systems.