CHEM 1300 Lecture Notes - Lecture 23: Boiling Point, Hydrogen Bond, Atomic Orbital

• School: University of Manitoba
• Department: Chemistry
• Course: CHEM 1300
• Professor: Elena Smirnova

Document Summary

Aromatic compounds have a special chemical group, called a benzene ring. There are three ways to draw a benzene ring. There are six 2p orbitals (one from each carbon) that overlap side-one to form six mos. There are 3 mos (that are filled with electrons) and 3*mos (that are empty). The overall result is that there are 3 bonds shared between all 6 carbons. The positions on benzene rings can be numbered (1, 2, 3, 4, 5,6) The positions on a benzene ring can also be named ortho, meta and para (abbreviated o, m and p) Draw the following structures: (a) p-dichlorobenzene; (b) m-iodophenol. Functional groups impart properties on molecules, so it is important to learn them. In addition to knowing the functional groups, it is useful to communicate the type of carbon attached to the functional group. One way to identify the type of carbon is to count the number of carbons the carbon of interest is bonded to.