The Index of Hydrogen Deficiency (IHD), is a count of how many molecules of H2 need to be added to a structure in order to obtain the corresponding saturated, acyclic species.
Hence it takes a count of how many rings and care present in the structure, so IHD can also be thought of as (multiple bonds + rings) or (p + r).
The degree of unsaturation (also known as the index of hydrogen deficiency (IHD) or rings plus double bonds[1]) formula is used in organic chemistry to help draw chemical structures. The formula lets the...
Saturday, October 30, 2010
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