A heterocyclic organic compound.
pyrrole, nitrogen-containing organic compound, heterocyclic compound, heteroatom, dipole, chlorophyll, hemoglobin, porphyrin, organic chemistry, chemistry
Molar mass: 67.09 g/mol
Boiling point: 130 °C (266 °F)
Density: 0.9691 g/cm³ (0.0350 lb/in³)
Heat of combustion: -2,351 kJ/mol
The pyrrole molecule is a five-member aromatic ring containing one nitrogen atom. The lone electron pair of the nitrogen atom is tied up in the delocalized electron system. Pyrrole is a colorless, flammable liquid with a chloroform-like odor. It does not dissolve in water but dissolves in most organic solvents. When exposed to air, it first becomes brown and then yellow and then resinifies. It is highly reactive in substitution, oxidation and reduction processes. Pyrrole is a weak acid; it reacts with potassium as hydrogen and pyrrole potassium are produced.
Occurrence and production
Pyrrole occurs in biologically important compounds, such as chlorophyll. In industry pyrrole is produced in a reaction of furan with ammonia.
Pyrrole is used in the manufacture of colorings and in the pharmaceuticals industry.
Chlorophyll is a photosensitive green pigment found in plants; it absorbs light energy, thus plays a vital role in photosynthesis.
Oxygen carrier protein in our red blood cells.
A biologically and practically important organic compound.
One of the 20 amino acids that make up proteins. Its amino group and the 3rd carbon atom of the side chain form a ring.
A heterocyclic aromatic organic compound, its derivatives include guanine and adenine.
A basic heterocyclic organic compound; a colorless, pungent toxic liquid.
A heterocyclic organic compound, its derivatives are thymine, cytosine and uracil.
An exercise about the groups and structure of organic nitrogen compounds.