Carbonic Chains (continued)

Closed Chains (continued)

Closed or alicyclic carbon chains can be classified in many ways, as can open chains.

Can be classified according to saturation:

- saturated: chain that has only simple bonds between atoms.

- unsaturated: chain having a double carbon bond.

They may be classified according to the presence or absence of a heteroatom:

- homogeneous or homocyclic: have only carbon atoms bonded together.

- heterogeneous or heterocyclic: have a heteroatom between carbon atoms.

The mixed carbon chains are open as well as closed.