5. Consider a molecular solid such as anthracene. It belongs to a monoclinic space group P2₁/a. a= 8.5626 Å, b = 6.0388 Å, c = 11.1848 Å, and ß = 124.71°. The atom positions are given as: C (0.0873, 0.0271, 0.3656) C (0.1187, 0.1578, 0.2807) C (0.0586, 0.0803, 0.1382) C (0.0879, 0.2094, 0.0474) C (0.0304, 0.1307, 0.9101) C (0.0606, 0.2594, 0.8165) C (0.0034, 0.1806, 0.6834) H (0.1310, 0.1080, 0.4720) H (0.1960, 0.3250, 0.3170) H (0.1550, 0.3760, 0.0850) H (0.1210, 0.4300, 0.8570) H (0.0240, 0.3240, 0.6210) a. Draw a unit cell of this material showing a view down the unique b axis. Under the "Transform" menu, optimize the range and repair molecular fragments. b. The C-H bond valence parameters are Ro = 1.1 and b = 0.37. One of the C atoms is bonded to a H with a bond distance of 1.135 Å. Calculate the bond valence for this bond. C. What does this imply about the bond valence of the two C-C bonds made by this atom?

5. Consider a molecular solid such as anthracene. It belongs to a monoclinic space group P2₁/a. a= 8.5626 Å, b = 6.0388 Å, c = 11.1848 Å, and ß = 124.71°. The atom positions are given as: C (0.0873, 0.0271, 0.3656) C (0.1187, 0.1578, 0.2807) C (0.0586, 0.0803, 0.1382) C (0.0879, 0.2094, 0.0474) C (0.0304, 0.1307, 0.9101) C (0.0606, 0.2594, 0.8165) C (0.0034, 0.1806, 0.6834) H (0.1310, 0.1080, 0.4720) H (0.1960, 0.3250, 0.3170) H (0.1550, 0.3760, 0.0850) H (0.1210, 0.4300, 0.8570) H (0.0240, 0.3240, 0.6210) a. Draw a unit cell of this material showing a view down the unique b axis. Under the "Transform" menu, optimize the range and repair molecular fragments. b. The C-H bond valence parameters are Ro = 1.1 and b = 0.37. One of the C atoms is bonded to a H with a bond distance of 1.135 Å. Calculate the bond valence for this bond. C. What does this imply about the bond valence of the two C-C bonds made by this atom?

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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