The Index of Hydrogen Deficiency Flashcards
1
Q
define parent formula
A
the formula of the aliphatic alkane that has the same number of carbon atoms in a given organic compound
2
Q
define index of hydrogen deficiency (IHD or saturation number)
A
the number of pi bonds and rings in a molecule, calculated from the molecular formula
3
Q
the _____ is also the number of missing hydrogen atoms divided by two
A
IHD
4
Q
what is the IHD for a double bond
A
1
5
Q
what is the IHD for a triple bond
A
2
6
Q
what is the IHD for a ring
A
1
7
Q
define heteroatom
A
in organic molecules, an atom other than carbon or hydrogen