Basic aromatic rings are Simple aromatic rings are aromatic organic compounds (also known as arenes or aromatics) that consist only of conjugated planar ring systems with delocalized pi electron clouds instead of discrete alternating single and double bonds. ...aromatic rings in which the A lone pair is an electron pair without bonding or sharing with other atoms. ...lone pair of Properties The electron (also called negatron, commonly represented as e−) is a subatomic particle. ...electrons of a ring_ General Name, Symbol, Number Nitrogen, N, 7 Chemical series nonmetals Group, Period, Block 15 (VA), 2 , p Density 1. ...nitrogen Properties For alternative meanings see atom (disambiguation). ...atom is not part of the In chemistry, an aromatic molecule is one in which electrons are free to cycle around circular arrangements of atoms, which are alternately singly and doubly bonded to one another. ...aromatic system and extends in the plane of the ring. This lone pair is responsible for the The common (Arrhenius) definition of a base is a chemical compound that either donates hydroxide ions or absorbs hydrogen ions when dissolved in water. ...basicity of these Nitrogenous bases are organic compounds that owe their basic properties to the lone pair of electrons of a nitrogen atom. ...nitrogenous bases, similar to the nitrogen atom in Ammonia Amines are organic compounds containing nitrogen as the key atom in the amine functional group. ...amines. In these compounds the the nitrogen atom is not connected to a General Name, Symbol, Number Hydrogen, H, 1 Chemical series nonmetals Group, Period, Block 1 (IA), 1 , s Density, Hardness 0. ...hydrogen atom. Basic aromatic compounds get Protonation is the addition of a proton to an atom, molecule, or ion. ...protonated and form aromatic ...cations (e.g. Categories: Stub ...pyridinium) under An acid (often represented by the generic formula AH) is typically a water_soluble, sour_tasting chemical compound. ...acidic conditions. Typical examples of basic aromatic rings are Pyridine is a clear liquid with a strong and very unpleasant odor that is used as a solvent and reagent in organic chemistry. ...pyridine or Quinoline, also known as 1_azanaphthalene, 1_benzazine, or benzo[b]pyridine, is a heterocyclic aromatic organic compound. ...quinoline. Several rings contain basic as well as non_basic nitrogen atoms, e.g. Imidazole is a heterocyclic aromatic organic compound. ...imidazole and Purine is a heterocyclic aromatic organic compound, consisting of a pyrimidine ring that is fused with an imidazole ring. ...purine.

In non_basic aromatic rings the A lone pair is an electron pair without bonding or sharing with other atoms. ...lone pair of Properties The electron (also called negatron, commonly represented as e−) is a subatomic particle. ...electrons of the nitrogen atom is delocalized and contributes to the aromatic Geometry of the water molecule Molecules have fixed equilibrium geometries__bond lengths and angles__that are dictated by the laws of quantum mechanics. ...pi electron system. In these compounds the the nitrogen atom is connected to a General Name, Symbol, Number Hydrogen, H, 1 Chemical series nonmetals Group, Period, Block 1 (IA), 1 , s Density, Hardness 0. ...hydrogen atom. Examples of non_basic nitrogen_containing aromatic rings are Pyrrole is a heterocyclic aromatic organic compound. ...pyrrole and Indole is an aromatic heterocyclic organic compound. ...indole.

The basic aromatic rings purines and Pyrimidine is a heterocyclic aromatic organic compound, which is similar to benzene and pyridine and that contains two nitrogen atoms at positions 1 and 3 of the six_membered ring. ...pyrimidines are the nucleobases found in DNA replication Deoxyribonucleic acid (DNA) is a nucleic acid which is capable of carrying genetic instructions for the biological development of all cellular forms of life and many viruses. ...DNA and Ribonucleic acid (RNA) is a nucleic acid consisting of a string of covalently_bound nucleotides. ...RNA.

Imidazole is a heterocyclic aromatic organic compound. ...Imidazole	Pyridine is a clear liquid with a strong and very unpleasant odor that is used as a solvent and reagent in organic chemistry. ...Pyridine	Purine is a heterocyclic aromatic organic compound, consisting of a pyrimidine ring that is fused with an imidazole ring. ...Purine	Pyrimidine is a heterocyclic aromatic organic compound, which is similar to benzene and pyridine and that contains two nitrogen atoms at positions 1 and 3 of the six_membered ring. ...Pyrimidine