Discovering Constant B in Rotational Spectroscopy of CO Molecule"

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To determine the rotational constant B for the CO molecule from its microwave spectrum, one must first understand the relationship between the moment of inertia and the spectrum. If the molecule is non-elastic, focus on using the spectrum directly to extract B. In cases where elasticity is considered, both B and Dj need to be calculated, which may involve fitting the spectrum to specific equations. The moment of inertia can be calculated if the bond length R is known, but if R is uncertain, it complicates the process. Clarifying the relevant equations and fitting methods is crucial for accurate analysis.
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So I am given a rotational microwave spectrum of a molecule (CO specifically) and I have to find the constant B if it's not elastic , the constants B and Dj if it is elastic. Anyone know how to do that? :frown:
 
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Do I start by finding the moment of inertia? or do I use the spectrum? I have a problem with the moment of inertia I can't find the distance R...
 
What are formulas for both cases? Have you tried to fit the spectrum to them?
 
Borek said:
What are formulas for both cases? Have you tried to fit the spectrum to them?
sorry english is not my native language and I'm not sure i understand what you're saying... you mean the equations?
 
Yes.
 

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