| Autor: |
Snyder, C., Tice, N., Maddox, J., Young, J., Mazzotta, M., Garabato, B., Evans, J., Dopierala, L., Shah, S., Claytor, Z., Smith, A. |
| Zdroj: |
Transition Metal Chemistry; Nov2013, Vol. 38 Issue 8, p801-809, 9p |
| Abstrakt: |
A series of 5,6-fused ring cyclopentadienyl tricarbonyl manganese and rhenium complexes, [M(CO){ η-1,2-CH(1,4-(R)NC}] ( 2a- 3d) were isolated by employing an off-metal ring closure route. Reacting thallium cyclopentadienide (Cp) salts ( 1a- d) with [MBr(CO)] (M = Mn, Re) provided pyridazyl complexes ( 2a- 3d) in high yield (75-99 %). Spectroscopic characterization (NMR, IR, MS) confirmed the identity of the desired organometallic pyridazines. The off-metal synthetic pathway employed did improve upon the isolation of these complexes as compared to previously reported routes. The molecular and electronic structure of complexes 2a- 3d and their optimal energy structures have been characterized with quantum chemistry calculations. Vibrational frequencies calculated were compared to their experimental counterparts. The excited state calculations predict that the dominant low-energy transition involves a ligand-to-metal charge transfer. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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