Sentence examples for nitro from inspiring English sources
noun
The univalent NO2 functional group.
This nucleophilic addition step is facilitated by the presence of the electron-attracting nitro group.
The presence of the aromatic ring enforces the geometry of the product, and the reaction is favoured by electron-withdrawing groups, such as the nitro (−NO2) group, which help to accommodate the negative charge on the intermediate.
One of the more common is shown here; reactions in this category consist of replacement of a group designated Y (often a hydrogen atom) in an aromatic molecule by an electrophilic agent designated E. Both substituents can be any one of various groups (e.g., hydrogen atoms or nitro, bromo, or tert-alkyl groups).
His first research, on coal tar, led to the development of practical methods for obtaining benzene and toluene and converting them into nitro compounds and amines.
The simplest classification is into electron-attracting substituents (halogens, carbonyl, nitro, and positively charged groups) and electron-repelling groups (alkyl groups, negatively charged groups).
Correlations between the structural features of chemical compounds and their colours have been sought since about 1870, when it was noted that quinones and aromatic azo and nitro compounds often are highly coloured and that the colours are diminished or destroyed when the compounds are hydrogenated.
Yet again Old Trafford's season has been thrown into turmoil by the nitro-glycerine in human form that is Eric Cantona.
The dishes certainly sound strange – nitro-dragon de pissaladière, oeuf au plat au virtuel – but he uses outstanding products and the surprising tastes are delicious.
Certainly, bright sparks will enjoy Jimmy Coates' enhanced thought process as he calculates how to eliminate the delicately-designed chain reaction and ensure the nitro-glycerine crates go up separately, rather than in one huge, coordinated eruption.
Nucleophilic aromatic substitution of nitro-substituted aryl halides probably proceeds by attachment of the nucleophile to the aromatic ring in a step that precedes loss of the halide leaving group.
Treatment with 2- 2-nitro-4-trifluoromethylbenzoyl -1,3-cyclohexanedione (NTBC), a potent inhibitor of the tyrosine catabolic pathway, prevents the production of toxic metabolites.
