Why is 4 nitroaniline weaker base than 3 nitroaniline?
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Why is 4 nitroaniline weaker base than 3 nitroaniline?
As a result, the availability of the unshared pair of electrons on nitrogen atom in p – nitroaniline is highly reduced as compared to the unshared electron pair on nitrogen in aniline. For this reason, p – nitroaniline behaces as a weaker base compared to anline.
Why M-nitroaniline is a stronger base than p-nitroaniline?
In the o-nitroaniline and p-nitroaniline compound, delocalization of the lone pair is observed. Therefore, o-nitroaniline is less basic than p-nitroaniline compounds. In m-nitroaniline only inductive effect is observed and therefore, it is more basic compared to others.
Why is P Methoxyaniline more basic than p-nitroaniline?
Methoxy group (-OCH3) is electron releasing group and increases the electron density on N atom. Therefore, it has greater electron donating tendency than aniline and thus is a stronger base than aniline. As a result, p-nitroaniline is a weaker base than aniline.
What is the pKb value of 4 nitroaniline?
12.99
4-Nitroaniline
| Properties. | |
|---|---|
| Formula | C6H6N2O2 |
| Refractive index | 1.5401 (160 C) |
| pKa/pKb | 12.99 (pKb) |
| Partition coefficient, pKow | 1.39 |
Is nitroaniline more basic than aniline?
As we know an electron donating group increases the basicity of an compound ,hence, NH2 will increase the basicity of benzene ring that it is attached to while NO2 will increase acidity thereby reducing basicity hence aniline is more basic than m nitroaniline .
Which is more basic aniline or meta nitroaniline?
Is nitroaniline a 4?
4-Nitroaniline, p-nitroaniline or 1-amino-4-nitrobenzene is an organic compound with the formula C6H6N2O2. It is an organic chemical compound, consisting of a benzene ring in which an amino group is para to a nitro group.
What is the solubility of 4 nitroaniline?
0.8 mg/ml
4-Nitroaniline
| Names | |
|---|---|
| Solubility in water | 0.8 mg/ml at 18.5 °C (IPCS) |
| Vapor pressure | 0.00002 mmHg (20°C) |
| Magnetic susceptibility (χ) | -66.43·10−6 cm3/mol |
| Hazards |
Which aniline is the weakest base?
Aniline only reluctantly accepts a proton to form the anilinium ion, and hence is a weak base. When an -NH group is attached to an aliphatic radical it receives no comparable delocalization stabilization. It is less reluctant to accept a proton on its nitrogen lone pair, and hence aliphatic amines are stronger bases.
Why is aniline is a weaker base than cyclohexylamine?
—NH2 has +R effect, it donates electrons to the benzene ring. As a result, the lone pair of electron on the N-atom gets delocalized over the benzene ring and thus it is less readily available for protonation. Hence, aniline is a weaker base than cyclohexylamine.