Questions about paragraph 1D

drawing Consider the following part of a Z-matrix of cyclopropane:

XX   0.00    0.00    0.00   0  0  0
XX   1.00    0.00    0.00   1  0  0
 C   0.90   90.00    0.00   2  1  0
 C   1.35     A       C     3  2  1
 C   1.35     B       D     3  2  1

Question 1

The bond length values entered serve as reasonable starting values for an optimization. What is the basis for an estimated C-XX distance of 0.90?

Check your answer here.

Question 2

What would be the value of the bond angles and torsion angles for the carbons 4 and 5 with the definition path shown above (4-3-2-1 and 5-3-2-1) ?

A: Bond angle 4-3-2

B: Bond angle 5-3-2

C: Torsion angle 4-3-2-1

D: Torsion angle 5-3-2-1


Back to part 1D of the course.