Help with various molecular geom/chem bonding problems. Any explanations would be greatly appreciated.
(See attached file for full problem description with chart)
Compound Number of Electrons Pairs Arrangement of Pairs Molecular Geometry
Compound Hybrid Orbitals Compound Hybrid Orbitals
Carbon Number Number of Sigma Bonds Around Carbon Number of Pi Bonds Around Carbon Type of Hybrid Orbitals Used by Carbon Bond Angles Around Carbon
a. What is the main structural difference between cis-1,2-dichloroethene and trans-1,2-dichloroethene?
b. Do cis-1,2-dichloroethene and trans-1,2-dichloroethene have the same physical properties? Give an example.
c. Suppose you have a sample of 1,2-dichloroethene. Describe how you could use dipole moments to determine if the sample is the cis isomer or the trans isomer.
d. The cis and trans isomers have geometries that are locked in a rigid structure that prevents easy rotation around the carbon-carbon double bond. What feature of the double bond locks the molecule in either the cis or the trans arrangement?
e. The cis isomer can be converted into the trans isomer, and vice versa, if rotation around the carbon-carbon double bond takes place. Which part of the carbon-carbon double bond in either cis- or trans-1,2-dichloroethene would have to be broken to allow easy rotation around the bond? What could cause this bond to be broken and allow the cis and trans isomers to be interconverted?