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Topic: Solve a question  (Read 1645 times)

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Offline 212020

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Solve a question
« on: April 22, 2021, 06:19:25 PM »
Group theory is often used by chemists to assist in the interpretation of infrared spectra. For example, there are four N-H bonds in NH4 +, with four stretching modes possible, where each is a linear combination of the four stretching modes and each has a symmetry. There is a possibility that several vibrational modes occur at the same frequency, and are therefore degenerate.

(a) In the case of the tetrahedral ion NH4 +, is it necessary to consider the possibility of degeneration? Is it possible that degeneration occurs in any of the vibrational frequencies of NH2D2 +?

Offline Orcio_87

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Re: Solve a question
« Reply #1 on: April 23, 2021, 02:40:11 AM »
@212020 Maybe you should just read about spectrum of CH4 and H2O instead.

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