W2013CHM2311 Part 5 Notes

The unhybridized p orbitals on the two carbon atoms

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: ctrons in conjugated hydrocarbon systems. Energy Ethylene has: →  12 valence AOs and therefore 12 MOs →  12 valence electrons -11.83 (b1 g) -14.30 (ag) -15.79 (b3 u) -21.89 (b2 u) -33.15 (ag) Corresponds to previous slide HMO Treatment of Ethylene Ethylene: a linear 2- carbon π- system When only considering π- bonding in ethylene, the situa0on is analogous to the MO treatment of diatomics and construc0on of the MO diagram is quite simple. The unhybridized p- orbitals on the two carbon atoms will overlap side to side to form a π MO and a π* MO. H H C C H H π∗ Energy H H C LUMO H C H H H px px HOMO π H H C C H H C C H H HMO Treatment of Ethylene Ethylene: a linear 2- carbon π- system For the sake of simplicity, when drawing MO diagrams for π- systems the hydrogen atoms are o[en not shown. Typical MO Diagram for Ethylene (hydrogen atoms are not shown) Energy π* LU M O π H OMO Orbital Sketches for π- Systems Ethylene: a linear 2- carbon...
View Full Document

This note was uploaded on 03/28/2014 for the course CHM 2311 taught by Professor Richardson during the Winter '09 term at University of Ottawa.

Ask a homework question - tutors are online