5.2 Spectroscopy Part 2

Question 1

What are the factors involved in proton deshielding?

Answer 1

1. electronegativity of the neighboring atoms
2. hybridization
3. acidity and hydrogen bonding

Question 2

How does electronegativity effect chemical shift values?

Answer 2

electronegative in close proximity to proton will result in downfield shift

Question 3

How does hybridization effect chemical shift values?

Answer 3

the greater the s orbital character results in downfield shift

Question 4

What is the shift value for aromatic protons?

Answer 4

6.5-8 ppm

Question 5

What is the shift for alkene protons?

Answer 5

5-6 ppm

Question 6

How does acidity and hydrogen bonding effect chemical shift?

Answer 6

hydrogens attached to heteroatoms result in downfield shift