Benzene, C₆H₆, belongs to the D_6hgroup. The reducible representation for the vibrational modes is

a. How many vibrational modes does benzene have?

b. How many of these modes are infrared active and to which representation do they belong?

c. Which of the infrared active modes are degenerate in energy and what is the degeneracy for each?

d. How many of these modes are Raman active and to which representation do they belong?

e. Which of the Raman active modes are degenerate in energy and what is the degeneracy for each?

f. Which of the infrared modes are also Raman active?

Transcribed Image Text:

reducible = 2.4g + 42g + Au + 2B, + 2B, + 2B, + E, + 3E, + 4E25 + 2E2u