1. Vibrational Energies and Full Analytic Potential Energy Functions from Pure MW Data  of PbI for v = 0 – 6 , and  of InI for v = 0-14

2. Previous work on PbI (i):

3. Previous work on PbI (i):

4. Previous work on PbI (ii):

5. Previous work on PbI (ii):

6. Previous work on PbI (iii):

7. What are we trying to do?

8. What did we do ?

9. Just so you know,

10. 1) e.g., experimental data & PGopher analysis for v = 6

11. 2) To obtain “mechanical” information data from these band-by-band results, use conventional spectroscopic expression to generate sets of synthetic pure rotational transition energies

12. 2) To obtain “mechanical” information data from these band-by-band results, use conventional spectroscopic expression to generate sets of synthetic pure rotational transition energies … and a standard regression analysis expression to estimate their uncertainties

13. This yields,

14. 3) Perform a `Direct-Potential-Fit’ analysis:

15. 3) Perform a `Direct-Potential-Fit’ analysis:

16. 3) Perform a `Direct-Potential-Fit’ analysis:

17. 3) Perform a `Direct-Potential-Fit’ analysis:

18. 3) Perform a `Direct-Potential-Fit’ analysis:

19. 3) Perform a `Direct-Potential-Fit’ analysis:

20. 3) Perform a `Direct-Potential-Fit’ analysis:

21. 3) Perform a `Direct-Potential-Fit’ analysis:

22. 3) Perform a `Direct-Potential-Fit’ analysis:

23. Below are the plots of ω0 and dd vs. β0

24. “ A little disappointment ” .. ???

25. Results: the most accurate fit to this pure MW PbI data for v=0-6 with re , β1 and β2 free was obtained for β0 = 1.24, and the properties of the resulting potential energy function for levels v=0-11 are shown below:

26. Our EMO potential for PbI

27. uBv & uGv vs. v

28. Conclusion

29. InI: ω0 and dd vs. β0

31. Acknowledgement