Card Set Information
Advanced Higher Chemistry - Unit Three - Stereoisomerism
What is a stereoisomer?
Stereoisomers have identical molecular formulae and the atoms are bonded together in the same order but the arrangement of the atoms in space is different, making them non-superimposable
What are the two types of stereoisomerism?
Geometric and Optical isomerism
What is geometric isomerism?
Geometric isomerism is one type of stereoisomerism and can arise due to the lack of free rotation around a bond,
frequently a carbon-carbon double bond
Geometric isomers can be labelled either as...?
What is the difference between a cis and a trans isomer?
A cis isomer has the functional groups on the same side whereas a trans isomer has the functional groups on the opposite sides
Is this a cis or trans isomer?
Is this a cis or a trans isomer?
What is an optical isomer?
Optical isomers are non-superimposable mirror images of each other and are said to be chiral
What does 'chiral' mean?
When the carbon atom has four different groups arranged around it
What is another word for optical isomers?
Optical isomers have identical physical and chemical properties but they have an opposite effect on ________ ___________ ________ and are said to be optically active?
plane polarised light
Mixtures containing equal amounts of both optical isomers are optically inactive. These mixtures are called...?
How many types of optical isomers of each organic compound is usually present in a biological system?