things clocked during workshop Flashcards
AX
explain signal
a is coupled 1 thing
so u get one split
so u get a doublet
AX2
explain signal
a is coupled to 2 things
so u split twice
but theyre the same
so they have the same cc which means they will overlap and give a high intensity where they do so.
triplet
AMX
explain signal
A is coupled to 2 diff things
2 splits
diff things so diff cc so they dont overlap
doublet of doublets
AMX2
explain signal
A is coupled to 3 diff things
one is the same,, 2 are the same
3 things but 2 diff coupling constants
3 splits
1/3 splits will overlap
doublet of triplets
same cc
they overlap and itensify the signal
different cc
they dont overlap and are separate
how to find the chemical shift
the middle of the peaks
use ppm
how to find the cc in hz
multipy the ppm difference by the strength of the nmr magnet
ppm x mhz will give the units in hz
if the signals arent symmetric what do we not find
we dont find the cc between them bc theyre not coupled together,, theyre 2 different signals
see the signal then what
draw the splitting tree
then figure out what split system it is by looking what things overlap etccc