Multistep Synthesis Preparation of
Step 1: Protection of the Carbonyl Group
Date performed: April 18, 2016 & April 20, 2016
The synthesis of 4,4-diphenyl-3-buten-2-one, utilizing
The angle in H3C-C-CH3 angle is smaller and the H3C-C=CH2 angle is larger than 120 degrees
Other examples of multiple bonds have shown that these bonds tend to occupy the same
positions as lone pairs
Double bonds to oxygen in SOF4, ClO2F3, a
Groups of low and high symmetry.
1. Determine whether the molecule belongs to a group of low or high symmetry.
a. Low symmetry
We have Identity C1 Symmetry.
Ex. H2C=CClBr Mirror plane with C8 Symmetry.
b. High Symm
HW 3 Monday
Quiz 3 11/16
Midterm #2 Wednesday 11/25
11/30 Quiz Written
HW 4 Friday 12/4
-atomic orbitals determine how they interact to form molecular orbitals.
- if the total energy of the electrons in the MOs is less than the A
Effects of Size
Up until now, we said that electronegativity and atomic size are related to each other.
a. The most electronegative are the smallest
b. Exceptions Some examples where the size and EN has the opposite effect.
A smaller outer g
5. all orbitals in space must be orthogonal to each other.
- In some cases, this means the axes of the orbitals must be perpendicular. (px, py, pz)
Particle in a box
Quantum numbers and atomic wave functions
Particle in a box basically tells us how a wa
Ligand Close Packing
a. LCP Model Uses the distances between outer atoms in molecules as a guide to molecular
b. Similar to VSEPR Approach but focuses primarily on the outer atoms rather than the central
c. In LCP model, li
Symmetry and Group Theory
Why is symmetry important?
a. IR Spectra, types of orbitals, predict optical activity, molecular properties.
b. Define Symmetry using 5 fundamental operations
c. Clarify them on the basis of the type of symmetry they p