Typical Absorptions for Simple Isolated Chromophores Page

Chromophore	Transition	l_max	log(e)
nitrile	h to p^*	160	<1.0
alkyne	p to p^*	170	3.0
alkene	p to p^*	175	3.0
alcohol	h to s^*	180	2.5
ether	h to s^*	180	3.5
ketone	p to p^*	180	3.0
ketone	h to p^*	280	1.5
aldehyde	p to p^*	190	2.0
aldehyde	h to p^*	290	1.0
amine	h to s^*	190	3.5
acid	h to p^*	205	1.5
ester	h to p^*	205	1.5
amide	h to p^*	210	1.5
thiol	h to s^*	210	3.0
nitro	h to p^*	271	<1.0
azo	h to p^*	340	<1.0

Return to: UV/Vis Spectroscopy Page