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Pyrrole


Pyrrole
Chemical name Pyrrole
Chemical formula C4H5N
Molecular mass 67.09 g/mol
Density 0.967 g/ml
Melting point -23 °C
Boiling point 129 - 131 °C
CAS number 109-97-7
SMILES C1=CC=CN1

Pyrrole is a heterocyclic aromatic organic compound. Pyrrole is a five-membered ring of the formula C4H5N.

Pyrroles are components of larger aromatic rings, including the porphyrins of heme, the chlorins and bacteriochlorins of chlorophyll, and the corrin ring of vitamin B12.

Pyrrole has very low basicity compared to amines and other aromatic compounds like pyridine where the ring nitrogen is not connected to a hydrogen atom. This is because the lone pair of electrons of the nitrogen atom becomes delocalized in the aromatic ring.


See also

Last updated: 05-07-2005 09:51:17
Last updated: 05-13-2005 07:56:04