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8. Sketch the Huckel M.O.s for ethylene, 1,3-butadiene, and 1,3,5-hexatriene. Show all orbitals and occupy with...
Answer the following questions for the molecular orbitals of 1,3,5-hexatriene: a. Which are the bonding orbitals,...
Answer the following questions for the molecular orbitals of 1,3,5-hexatriene: a. Which are the bonding orbitals, and which are the antibonding orbitals? b. Which orbitals are the HOMO and the LUMO in the ground state? c. Which orbitals are the HOMO and the LUMO in the excited state? d. Which orbitals are symmetric, and which are antisymmetric? e. What is the relationship between HOMO and LUMO and symmetric and antisymmetric orbitals?
5. Molecular orbitals are formed by the overlap of atomic orbitals. Thus, n atomic orbitals can combine (overlap) t...
5. Molecular orbitals are formed by the overlap of atomic orbitals. Thus, n atomic orbitals can combine (overlap) to form n molecular orbitals. In 1,3-butadiene there are four atomic p orbitals which can combine to form four 7 molecular orbitals. In ethene there are two atomic p orbitals which can combine to form two y molecular orbitals. The drawings below show the different ways in which the p orbitals of ethene and 1,3- butadiene can be combined to form the...
(a) Draw all of the pi molecular orbitals for (3E)-1, 3, 5-hexatriene ordering them from lowest...
(a) Draw all of the pi molecular orbitals for (3E)-1, 3, 5-hexatriene ordering them from lowest to highest in energy. (b) Indicate which are bonding and which are antibonding. (c) Indicate the number of electrons that would be found in each in the ground state for the molecule. (d) Label the HOMO and LUMO.
1. How many bonding MOs does butadiene have? 2. How many p-orbitals in butadiene can participate...
1. How many bonding MOs does butadiene have? 2. How many p-orbitals in butadiene can participate in pi-bonding? 3. Are the energies of the HUMO and LUMO increased when electrons in a conjugated system are excited? 4. How many antibonding MOs does butadiene have? 5. Does the bonding or antibonding MO have no electron density overlap? 6. How many p-orbitals in ethylene can participate in pi-bonding? 7. How many bonding MOs does ethylene have? 8. How many antibonding MOs does...
Need molecular orbitals of 1,3-butadiene The molecular orbitals of 1, 3-butadiene are given below. Fill in...
Need molecular orbitals of 1,3-butadiene
The molecular orbitals of 1, 3-butadiene are given below. Fill in the pi electrons expected in the ground state. Click on the blue box to toggle through 0, 1, or 2 electrons on each level. Select the which pi molecular orbital is the HOMO of the ground state pi_1 pi_2 pi_3 pi_4 LUMO of the ground state pi_1 pi_2 pi_3 pi_4
Please help!! Questions 1. Why does the trans conformation of a diene, in reaction with a...
Please help!!
Questions 1. Why does the trans conformation of a diene, in reaction with a dienophile, not lead to a Diels-Alder reaction product? 2. Complete the following Diels-Alder reactions. Provide the major endo-product(s). Diene Dienophile Product(s) Domov - 0.0- 3. How many a electrons are there in a molecule of 1.3-butadiene? 106 4. What is the maximum number of electrons that can reside in a molecular orbital? (Hint: It is the same maximum number that can fit into an...
The molecular orbitals of 1,3-butadiene are given below. 1) Fill in the pi electrons expected in...
The molecular orbitals of 1,3-butadiene are given below. 1) Fill in the pi electrons expected in the ground state Click on the blue box to toggle through 0, 1, or 2 electrons on each level. 2) Select the which IT molecular orbital is the HOMO of the ground state LUMO of the ground state TT4 TT1 TT1 TT3 TT2 TT4 800 TT4 TT1 Ground state
[Co(NH3)6]3+ion 4. Construct the MO diagram. Label all atomic, group and molecular orbitals with...
[Co(NH3)6]3+ion4. Construct the MO diagram. Label all atomic, group and molecular orbitals with symmetry labels. Fill in the diagram with the appropriate number of electrons. Assume that this complex is a strong field, low spin complex.5. a) What set of orbitals is the HOMO (highest occupied molecular orbitals).b) Is this set of orbitals classified as bonding, antibonding or non-bonding (no symmetry match)?6. What set of orbitals is the LUMO (lowest unoccupied molecular orbitals)?
8 8) (E)-4-methylpenta-2,4-dien-1-ol and cyclopent-4-ene-1,3-dione can undergo a Diels Alder type reaction. First, draw the Huckel...
8
8) (E)-4-methylpenta-2,4-dien-1-ol and cyclopent-4-ene-1,3-dione can undergo a Diels Alder type reaction. First, draw the Huckel M.O. diagram for this system. Indicate which orbital is the HOMO and which is the LUMO for the diene and dienophile. Second, clearly sketch the cartoons that show which orbitals interact to allow cyclization. Based on your analysis, is this reaction allowed by heating? (15 points) (E)-4-methylpenta-2,4-dien-1-ol a OH + cyclopent-4-ene-1,3-dione
Problem #1 Draw the first four e-molecular orbitals for the heptatrienyl cation shown below. Stack them...
Problem #1 Draw the first four e-molecular orbitals for the heptatrienyl cation shown below. Stack them according to energy with respect to the non-bonding line. Indicate the symmetry of each orbital. Show all nodes, and use shading to indicate the phase of the orbitals. Put in the A-electrons and identify the HOMO and LUMO orbitals HC CH Problem #2 Provide full IUPAC names for each of the following molecules: a) b) HO CH3
Answer the following questions for the molecular orbitals of 1,3,5-hexatriene: a. Which are the bonding orbitals, and which are the antibonding orbitals? b. Which orbitals are the HOMO and the LUMO in the ground state? c. Which orbitals are the HOMO and the LUMO in the excited state? d. Which orbitals are symmetric, and which are antisymmetric? e. What is the relationship between HOMO and LUMO and symmetric and antisymmetric orbitals?
5. Molecular orbitals are formed by the overlap of atomic orbitals. Thus, n atomic orbitals can combine (overlap) to form n molecular orbitals. In 1,3-butadiene there are four atomic p orbitals which can combine to form four 7 molecular orbitals. In ethene there are two atomic p orbitals which can combine to form two y molecular orbitals. The drawings below show the different ways in which the p orbitals of ethene and 1,3- butadiene can be combined to form the...
(a) Draw all of the pi molecular orbitals for (3E)-1, 3, 5-hexatriene ordering them from lowest to highest in energy. (b) Indicate which are bonding and which are antibonding. (c) Indicate the number of electrons that would be found in each in the ground state for the molecule. (d) Label the HOMO and LUMO.
Need molecular orbitals of 1,3-butadiene
The molecular orbitals of 1, 3-butadiene are given below. Fill in the pi electrons expected in the ground state. Click on the blue box to toggle through 0, 1, or 2 electrons on each level. Select the which pi molecular orbital is the HOMO of the ground state pi_1 pi_2 pi_3 pi_4 LUMO of the ground state pi_1 pi_2 pi_3 pi_4
Please help!!
Questions 1. Why does the trans conformation of a diene, in reaction with a dienophile, not lead to a Diels-Alder reaction product? 2. Complete the following Diels-Alder reactions. Provide the major endo-product(s). Diene Dienophile Product(s) Domov - 0.0- 3. How many a electrons are there in a molecule of 1.3-butadiene? 106 4. What is the maximum number of electrons that can reside in a molecular orbital? (Hint: It is the same maximum number that can fit into an...
The molecular orbitals of 1,3-butadiene are given below. 1) Fill in the pi electrons expected in the ground state Click on the blue box to toggle through 0, 1, or 2 electrons on each level. 2) Select the which IT molecular orbital is the HOMO of the ground state LUMO of the ground state TT4 TT1 TT1 TT3 TT2 TT4 800 TT4 TT1 Ground state
8
8) (E)-4-methylpenta-2,4-dien-1-ol and cyclopent-4-ene-1,3-dione can undergo a Diels Alder type reaction. First, draw the Huckel M.O. diagram for this system. Indicate which orbital is the HOMO and which is the LUMO for the diene and dienophile. Second, clearly sketch the cartoons that show which orbitals interact to allow cyclization. Based on your analysis, is this reaction allowed by heating? (15 points) (E)-4-methylpenta-2,4-dien-1-ol a OH + cyclopent-4-ene-1,3-dione
Problem #1 Draw the first four e-molecular orbitals for the heptatrienyl cation shown below. Stack them according to energy with respect to the non-bonding line. Indicate the symmetry of each orbital. Show all nodes, and use shading to indicate the phase of the orbitals. Put in the A-electrons and identify the HOMO and LUMO orbitals HC CH Problem #2 Provide full IUPAC names for each of the following molecules: a) b) HO CH3
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