Ring-systems sentence example

ring-systems
  • There also exists an extensive class of compounds termed the " heterocyclic series " - these compounds are derived from ring systems containing atoms other than carbon; this class is more generally allied to the aromatic series than to the aliphatic.

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  • Most of the simple ring systems which contain two adjacent carbon atoms may suffer fusion with any other ring (also containing two adjacent carbon atoms) with the production of nuclei of greater complexity.

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  • Obviously, isomeric ring-systems are possible, since the carbon atoms in the original rings are not all of equal value.

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  • Six-membered ring systems can be referred back, in a manner similar to the above, to pyrone, penthiophene and pyridine, the substances containing a ring of five carbon atoms, and an oxygen, sulphur and nitrogen atom respectively.

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  • By the same token, they also identify the positions of the rings and ring systems in the phane parent hydride.

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