Predict the length of the C-S,C-H and S-H bonds in methyl mercaptan, CH3SH

×

Error message

Warning: Illegal string offset 'theme_pager_link' in cleanpager_theme_registry_alter() (line 338 of /home/yeahchemistry/public_html/sites/all/modules/cleanpager/cleanpager.module).
Home >> Practice Problems
hey
Explanation: 

Look for the specific bonds and the atomic radii , We will assume that the bond lengths are the sum of the radii of the atoms involved.Thus, we predict

C-S bond length = radius of C + radius of S = 0.77 A + 1.02 A = 1.79 A

C-H bond lenght = 0.77 A + 0.37 A = 1.14 A

S-H bond length = 1.02 A + 0.37 A = 1.39 A

The experimentally determined bond lengths in methyl mercaptan are C-S = 1.82 A , C-H = 1.10 A , ans S-H = 1.33 A .

In general, the lengths of bonds involving hydrigen show larger deviations from the values predicted by the sum of atommic radii than do those bonds involving larger atoms.

Answer: 

C-S =1.79 A,

C-H=1.14 A,

S-H=1.39 A

Topic: