19 Questions
What does 'cis' mean in the context of functional groups?
On the same side of the plane
What is the main purpose of the Cahn-Ingold-Prelog (CIP) rules?
Assign priorities to substituents around a chiral center
In the E/Z nomenclature for alkenes, what does 'E' stand for?
Opposite
How are priorities assigned to substituents around a chiral carbon atom?
Based on atomic number
What is the purpose of the E/Z nomenclature in organic chemistry?
Describing spatial arrangement around double bonds
How should multiple bonds or isotopes be treated when assigning priorities in CIP rules?
As single bonds to the same atom
Which term describes substituents on opposing sides of a plane?
'Trans'
When there's a tie at the first atom in CIP rules, what should be done next?
Proceed along the substituent chains until a difference is found
What does 'Z' stand for in E/Z nomenclature for alkenes?
Zusammen
Which term describes stereoisomers that are not mirror images of each other?
Diastereomers
What term is used for chiral molecules that rotate plane-polarized light in either the left or right direction?
Enantiomers
What do meso compounds refer to in stereochemistry?
Optically inactive compounds
In which aspect do diastereomers differ from enantiomers?
Physical properties
What characterizes diastereomers regarding their spatial arrangement?
Have different spatial arrangements
'Enantio' means ____ and 'morph' means ____.
Opposite, form
'Diastereomerism' arises when a molecule has _____ and the spatial arrangement of substituents differs for at least one pair of stereoisomers.
Two or more chiral centers
'Meso compounds' are known for being _____ even though they contain chiral centers.
Optically active
'Diastereomers' have distinct physical properties like _____ compared to enantiomers.
'Different melting points'
'Meso compounds' are unique among chiral molecules because they have _____.
'No chiral centers'
Test your knowledge on inductive effects such as negative and positive electromeric effects, as well as mesomeric or resonance effects. Learn how electron pairs in pi bonds can be influenced by different factors.
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