Ochem - linear combination of atomic orbitals

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SUMMARY

The discussion focuses on creating a Linear Combination of Atomic Orbitals (LCAO) representation for the molecular structure of C2H2O. The first carbon exhibits sp2 hybridization, the second carbon shows sp hybridization, and the oxygen atom also has sp2 hybridization. The participant seeks guidance on how to incorporate double bonds and lone pairs into the LCAO representation, referencing existing examples that primarily illustrate single bonds.

PREREQUISITES
  • Understanding of hybridization concepts, specifically sp and sp2 hybridization.
  • Familiarity with molecular orbital theory and LCAO methodology.
  • Knowledge of drawing molecular structures and bond representations.
  • Basic comprehension of lone pairs and their role in molecular geometry.
NEXT STEPS
  • Research the application of LCAO in molecules with multiple bond types.
  • Study the hybridization of complex organic molecules, focusing on C2H2O.
  • Explore resources on molecular orbital diagrams and their interpretations.
  • Examine examples of LCAO representations involving double bonds and lone pairs.
USEFUL FOR

Chemistry students, educators, and anyone studying molecular orbital theory and hybridization in organic compounds.

hamhamt
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1. Homework Statement
Draw an LCAO representation of all of the bonding orbitals for C2H2O. Be sure to clearly state the hybridization of the two carbons and the oxygen in addition to drawing the orbital representation. Also show clearly what orbital any unshared pairs occupy.


2. Homework Equations
N/A


3. The Attempt at a Solution
I started out by drawing the molecular structure and came up with CH2=C=O where the 1st carbon has an sp2 hybridization, the 2nd carbon has an sp hybridization, and the oxygen has an sp2 hybridization.

I don't know where to go from here. I have seen LCAO representations but they have only been single bonds between two hydrogen atoms like the one on this site http://www.science.uwaterloo.ca/~cch...ig/sigmah2.gif

How would I go about forming a Linear Combination of Atomic Orbitals with double bonds between the carbon-carbon and carbon-oxygen bonds, as well as the lone pairs?

Thank you!
 
Last edited by a moderator:
Physics news on Phys.org
You can start by looking at http://wikis.lawrence.edu/display/CHEM/4.2+Hybrid+Orbitals+%28Jessica+Beyer%29
 

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