
1) How many pi electrons are involved in conjugation in the following molecule?
- How many pi electrons there are in the molecule below?
2. What is the Hückel number of pi electrons for the molecule shown below? How many pi electron pairs does it have? Would you expect this molecule to be aromatic, antiaromatic or non aromatic? Explain. (3pts) 16 Te 1. Draw Frost circle diagrams for each compound shown. Assume that all atoms in the ring are sn2 hybridized. Populate the pi electrons in the corresponding MO's. Identify the compound as aromatic or antiaromatic. (5 pts)
How many pi electrons are present in the molecule shown below? 8 O 12 O 10
2. What is the Hückel number of pi electrons for the molecule shown below? How many pi electron pairs does it have? Would you expect this molecule to be aromatic, antiaromatic or non aromatic? Explain. (3pts) one or lootn of tmu o's ape Sp2 hylandrred non avomatic assum ing 0: brst mod
2. What is the Hückel number of pi electrons for the molecule shown below? How many pi electron pas does it have? Would you expect this molecule to be aromatic, antiaromatic or non aromatie? Explain. (3 pts) Rank the reactivity of the compounds shown below when using a Friedel Crafts alkylation fac Make sure you label which is least reactive and most reactive. (5 pts)
How many ? and ? bonds are in this molecule?
How many sigma and pi bonds are in this molecule?
A. Calculate the degree of unsaturation. How many pi bonds are
in the molecule?
B.) How many methyl groups and methylene groups are present in
the molecule?
C.Write the structure of the molecule and label the protons as
A, B and C corresponding to the labels on the NMR peaks
?? 2H 1H PPH b) Calculate the degree of unsaturation. How many pi bonds are in the molecule? (1 point) c) How many methyl groups and methylene groups are present...
When a molecule contains a pi bond, there is a chance that the pi electrons could be spread between more than just the two atoms of the pi bond. The electrons in these molecules are said to be delocalized
For the structures shown below, state the number of pi electrons present in the molecule. OH HO AL Number of pi electrons = Number of pi electrons = Is the molecule aromatic according to the Huckel criteria? S If the molecule were planar, would it be antiaromatic? / C 1 7 I
Question 3 2 pts How many sigma and pi bonds are in the following molecule? :0: H 0: H O sigma = 4. pi = 1 O sigma = 2, pi = 4 sigma = 5, pi = 2 Osigma = 5, pi = 1 sigma = 6, pi = 0