Question

How many dien-yne molecule(s) are possible (without branching but including stereoisomer) for molecular formula C6H6 ?​

Answer 1

There are 5 dien-yne molecule(s) are possible (without branching but including stereoisomer) for molecular formula C6H6.

• These are -

• 1,2-Hexadien-4-yne

• 1,2-Hexadien-5-yne

• 1,3-Hexadien-5-yne

• 1,5-Hexadien-3-yne (Basavraj)

• 2,3-Hexadien-5-yne .

• Setereoisomers is defined as the isomers that differ in spatial arrangement of atoms, rather than order of atomic connectivity.

• So , for C6H6 there are 5 possible dien-yne molecules without branching but with setereoisomers . Let's see this by looking at their structures , for better understanding.

• The structure of 1,2-Hexadien-4-yne is-

CH3-C≡ C-HC=C=CH2

we do numbering from right end carbon,in

this there is no setereoisomers is present,

as don't have different spatial arrangement.

• The structure of 1,2-Hexadien-5-yne is-

HC≡C-CH2-HC=C=CH2

same as above the condition is here.

• The structure of 1,3-Hexadien-5-yne is -

HC≡C-HC=CH-HC=CH2

same as above the condition is here.

• The structure of 1,5-Hexadien-3-yne is -

H2C=CH-C≡C-HC=CH2

same as above the condition is here.

• The structure of 2,3-Hexadien-5-yne is-

HC≡C-HC=C=HC-CH3

same as above the condition is here.