Podcast
Questions and Answers
What is the difference between the number of absorption peaks in the N-H stretch region in a primary amine and a secondary amine?
What is the difference between the number of absorption peaks in the N-H stretch region in a primary amine and a secondary amine?
Primary amine usually has two absorptions, while secondary amine has one absorption peak.
At what approximate wavenumber does the symmetric stretch absorption peak for a nitro group appear?
At what approximate wavenumber does the symmetric stretch absorption peak for a nitro group appear?
Approximately 1350 cm-1.
What kind of absorptions are fundamental absorptions?
What kind of absorptions are fundamental absorptions?
They arise from excitation from the high ground state to lowest-energy excited state.
What are overtones in the context of vibrational frequencies?
What are overtones in the context of vibrational frequencies?
Signup and view all the answers
How are combination bands formed in a molecule?
How are combination bands formed in a molecule?
Signup and view all the answers
What is the nature of non-fundamental absorptions?
What is the nature of non-fundamental absorptions?
Signup and view all the answers
What are difference bands in the context of vibrational frequencies?
What are difference bands in the context of vibrational frequencies?
Signup and view all the answers
What does the presence of weak overtone, combination, and difference bands contribute to in an infrared spectrum?
What does the presence of weak overtone, combination, and difference bands contribute to in an infrared spectrum?
Signup and view all the answers
What is the excitation process for fundamental absorptions?
What is the excitation process for fundamental absorptions?
Signup and view all the answers
What is the basis for the formation of overtones in vibrational frequencies?
What is the basis for the formation of overtones in vibrational frequencies?
Signup and view all the answers
