1. High Resolution Spectroscopy of Strontium Monomethoxide (SrOCH 3 ) W.S. Hopkins, A. Read*, A.G. Adam, C. Linton*, D.W. Tokaryk * Departments of Chemistry and Physics*, University of New Brunswick Fredericton NB, Canada Center for Laser, Atomic and Molecular Sciences

2. Why Study Metal-Ligand Complexes? Chemical catalysis. Surface chemistry. Astrophysical interest. Group bonding trends. Structural determination. Background: CaOCH 3 recently studied at Lyon and UNB. Broida oven work done on the A 2 E 3/2 - X 2 A 1 transition by O’Brien, Brazier and Bernath (1988).

4. SrOCH 3 Electronic States

5. A 2 E 3/2 - X 2 A 1 Transition

6. A 2 E 1/2 - X 2 A 1 Transition

7. B 2 A 1 - X 2 A 1 Transition

8. Dispersed Fluorescence

9. CaOCH 3 vs. SrOCH 3

10. SrOCH 3 A 2 E 3/2 - X 2 A 1

11. A 2 E 1/2 - X 2 A 1 Isotopic Shift

12. The Hamiltonian* H( 2 A 1 ) = H ROT (N) + H SR + H CD H( 2 E) = H SO + H COR + H ROT (J) + H SR + H JT + H CD Where, H ROT = BN 2 + (A-B)N z H SR =  aa N z S z + ½  bc (N + S - +N - S + ) H COR = -2 A N s L z H JT = h 1 ( L 2 - N 2 + + L 2 + N 2 - ) H SR =  aa N z S z + ½  bc (N + S - +N - S + ) +  1 ( L 2 - N + S + + L 2 + N - S - ) H SO = a L z S z *Endo, Saito, and Hirota, J. Chem. Phys., 81, 122-135 (1984)

13. Preliminary Results SrO 12 CH 3 SrO 13 CH 3

14. Future Work Find and fit lines of higher K-value for the B-X and A-X transitions of the 12 CH 3 and 13 CH 3 isotopic species. Combine the A-X and B-X transitions into a global fit. Assign the spectra of the deuterated species. Determine molecular geometry of SrOCH 3.

15. Acknowledgements University of New Brunswick Joyce MacGregor - Laser Technician Laura Downie - Summer Research Assistant Jeff Crouse - Summer Research Assistant Université Lyon et CNRS (LASIM) Amanda Ross Patrick Crozet