CHEM 0310 Lecture Notes - Lecture 4: Cyclopropane, Cyclobutane, Cycloalkane
Document Summary
Compounds are alkanes preceded by the prefix cyclo- A substituted cyclic alkane requires numbering only if more than one substituent is attached to the ring. For polysubstituted compounds, name the cycloalkane in alphabetical order. Smaller units are treated as a substituent to the larger one (two cyclos the first one goes first) Compared with the corresponding straight-chain, the cycloalkanes have higher boiling points and melting points as well as higher densities. This is due to the increased london interactions of the relatively more rigid and more symmetric cyclic systems. Odd number of carbons have higher boiling points than even, but for the most part more carbons cause a more positive bp and mp. Disubstituted cycloalkanes two isomers are possible: trans: opposite faces (1 hash, 1 solid, cis: same side. Stereoisomers are compounds that have identical connectivity but differ in the arrangement of their atoms in space.
