CHEM 140A Chapter Notes - Chapter 4: Substituent, Methyl Group, Organism
19 Mar 2018
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Alkane names are preceded by the prefix cyclo- Number the individual ring carbons only if more than one substituent is attached to the ring. For only one substituent, the carbon of attachment is carbon 1. For polysubstituted compounds, provide the lowest possible numbering sequence. Alphabetical order takes precedence when two sequences are possible. Radicals derived from cycloalkanes by the removal of a hydrogen atom are cycloalkyl radicals. textbook notes page 1. Two substituents can be on the same face or opposite faces of the ring. Compounds that have identical connectivities but differ in the arrangement of their atoms in space. Cylcoalkanes have higher boiling and melting points as well as higher densities. Increased london interactions of the relatively more rigid and more symmetric cyclic systems. 4. 2 ring strain and the structure of cycloalkanes. The heats of combustion of the cycloalkanes reveal the presence of ring strain. Strain affects the structures and conformational function of the smaller cycloalkanes.
