5.2 Spectroscopy Part 2 Flashcards
1
Q
What are the factors involved in proton deshielding?
A
- electronegativity of the neighboring atoms
- hybridization
- acidity and hydrogen bonding
2
Q
How does electronegativity effect chemical shift values?
A
electronegative in close proximity to proton will result in downfield shift
3
Q
How does hybridization effect chemical shift values?
A
the greater the s orbital character results in downfield shift
4
Q
What is the shift value for aromatic protons?
A
6.5-8 ppm
5
Q
What is the shift for alkene protons?
A
5-6 ppm
6
Q
How does acidity and hydrogen bonding effect chemical shift?
A
hydrogens attached to heteroatoms result in downfield shift