Isomers Flashcards
(7 cards)
What is a constitutional (structural) isomer?
Constitutional or structural isomers are 2 or more molecules with the same molecular formula ( number and type of atoms) but a different structural formula ( arrangement of atoms ) which leads to different names.
Why is it a Primary alcohol?
Because the carbon atom that the functional group or atom is attached to is only attached to one other carbon atom
Why is it a secondary alcohol?
Because the carbon atom that the functional group or atom is attached to is attached to 2 other carbon atoms
Why is it a tertiary alcohol?
Because the carbon atom that the functional group or atom is attached to is attached to 3 other carbon atoms
Geometric isomers are?
Geometric isomers are substances with the same molecular formula (number and type of atoms) but a different arrangement of atoms in space but these isomers do not have different names but are identified but cis and trans
What is a cis and trans isomer?
A cis isomer is when the same atom is attached to either the bottom or top of the carbon atom but is the same as the other one and a trans isomer is when they are on opposite sides
Ideal answer of geometric isomers
geometric isomers must contain a C=C double bond to prevent rotation of the attached atoms around this bond, therefore fixing the atoms’ positions in space. It must also have two different groups/atoms attached to each carbon that is involved in the double bond. The proposed structure contains a double bond between C2 and C3, and on each carbon of the double bond there are two different groups attached. In this case a CH3, methyl group and a single hydrogen atom, H