What are main peaks obtained in IR spectrum of p-nitroaniline?
Contexts in source publication The p-nitroaniline has one NH 2 group therefore one symmetric and one asymmetric N-H stretching vibrations are expected that were assigned to peaks appeared in the region of 3350-3478 cm -1 in control and 3362- 3482 cm -1 in treated sample.
What is the state of p-nitroaniline?
solid
4-Nitroaniline
| p-Nitroaniline | |
|---|---|
| Appearance | yellow or brown powder |
| Density | 1.437 g/ml, solid |
| Melting point | 146-149 °C(lit.) |
| Boiling point | 332 °C |
Why is p-nitroaniline colored?
Trouble is that traces of acid left will hydrolyze it into p-nitroaniline which has deep yellow to yellow-orange color (this compound has melting point of 146 -149 °C) and it smells like ammonia.
What is p-nitroaniline used for?
p-Nitroaniline is a bright yellow powder with a faint Ammonia-like odor. It is used as an intermediate in the manufacture of dyes, pharmaceuticals and pesticides.
What are the functional groups of p-nitroaniline?
Additional Information
| Product No. | D-5439 |
|---|---|
| CAS Number (of the unlabelled compound) | 100-01-6 |
| Shipping Hazards | TOXIC |
| Category | Environmental Standards |
| Functional Groups | Amines & Amine Salts,Nitro & Nitroso Compounds |
Why p-nitroaniline is less basic than aniline?
In p−toluidine, the presence of electron-donating −CH3 group increases the electron density on the N-atom. Thus, p-toluidine is more basic than aniline. −NO2 group decreases the electron density over the N−atom in p-nitroaniline. Thus, p-nitroaniline is less basic than aniline.
Is para nitroaniline polar or nonpolar?
In p-nitroaniline, the amino group is para or opposite to the nitro group making the molecule more polar.
Is p-nitroaniline a base?
Secondly, aniline and p-nitroaniline (first two green shaded structures) are weaker bases due to delocalization of the nitrogen non-bonding electron pair into the aromatic ring (and the nitro substituent).
Which is more polar O nitroaniline and p-nitroaniline?
Thus it was determined o-nitroaniline would be eluted further up by the appropriate solvent in TLC. Conversely, P-nitroaniline is more polar due to having its functional groups opposite to each other, a more polar molecule can interact to a greater extent with the silica stationary phase.
Which is more basic p-nitroaniline or aniline?
−NO2 group decreases the electron density over the N−atom in p-nitroaniline. Thus, p-nitroaniline is less basic than aniline.
Which nitroaniline is more polar O or p-nitroaniline explain briefly your answer?
Answer. The proximity of amino and nitro functional groups in o-nitroaniline results in intramolecular hydrogen bonding, making the molecule less polar. These differences give o- and p-nitroaniline their unique uses, therefore it is very important to separate them.
Is O or P-nitroaniline more polar explain based on their Rf values and chemical structures?
Conversely, P-nitroaniline is more polar due to having its functional groups opposite to each other, a more polar molecule can interact to a greater extent with the silica stationary phase.