Task:
Calculate the degree of unsaturation for the compound C24H26NO3Cl3.
Solution:
The degree of unsaturation (DU) is a calculation that determines the total number of rings and π bonds.
rings + π bonds = DU = N(C) - N(H)/2 + N(elements of V group)/2 - N(elements of VII group)/2 + 1
C24H26NO3Cl3
N(C) = 24
N(H) = 26
N(elements of V group) = N(N) = 1
N(elements of VII group) = N(Cl) = 3
Then,
DU = N(C) - N(H)/2 + N(Cl) - N(N) = 24 - (26 / 2) + (1 / 2) - (3 / 2) + 1 = 24 - 13 + 0.5 - 1.5 + 1 = 11
The degree of unsaturation (DU) = 11
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