The reason that the chemical shift for an alkyne hydrogen atom is upfield from an alkene hydrogen atom is that: a) the a
Posted: Fri Jul 15, 2022 5:01 pm
The reason that the chemical shift for an alkyne hydrogen atomis upfield from an alkene hydrogen atom is that:
a) the alkyne carbon has a greater relative electronegativitydue to the fact that it is sp hybridized.
b) there are 2 pi bonds for resonance in the alkyne versus only1 pi bond in the alkene.
c) the anisotropic effect of the triple bond shields the alkynehydrogen atoms whereas the anisotropic effect of the double bonddeshields the alkene hydrogen atoms.
d) it is more acidic than the alkene hydrogen atoms.
a) the alkyne carbon has a greater relative electronegativitydue to the fact that it is sp hybridized.
b) there are 2 pi bonds for resonance in the alkyne versus only1 pi bond in the alkene.
c) the anisotropic effect of the triple bond shields the alkynehydrogen atoms whereas the anisotropic effect of the double bonddeshields the alkene hydrogen atoms.
d) it is more acidic than the alkene hydrogen atoms.