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6 votes
2 answers
327 views

Tunneling in chemical reactions

We know that quantum tunneling is the reason behind several natural phenomenon like alpha decay and thermonuclear fusion inside the stars. How can it influence chemical reactions by tunnelling a ...
Ananyo Bhattacharya 's user avatar
3 votes
1 answer
201 views

Thermodynamics in Solution (solvation) from quantum chemistry

The gist of the question is "how do I get a heat of formation in solution" - but let me give it some context to be more specific. I am interested in calculating the thermodynamic values of molecules ...
DetlevCM's user avatar
  • 565
18 votes
1 answer
732 views

What is the relation between surface tension and initial molecular harmonic?

Initial harmonic is measured as Hartree/Bohr^2 ( like IHarmonic=n in Gaussian Software ). As I am from physics background I am used to look at features from their dimension point of view: Actually ...
Aug's user avatar
  • 2,141
12 votes
1 answer
3k views

How to make approximation of rotational partition function of diatomic linear molecules?

Using the rigid rotor approximation to the level energies, and such other appropriate assumptions, we can approximate rotational partition function, $Q_{\mathrm{rot}}$, of linear molecules as follows: ...
puresky's user avatar
  • 181