Abstract
The (C) over tilde (2)A(1)-(X) over tilde (2)A(1) electronic transition of SrNH2 has been recorded at high resolution using laser-ablation/molecular jet techniques. Transitions arising from the K-a" = 0 and K-a(") = 1 levels have been observed. The data have been analyzed using the S-reduced asymmetric top Hamiltonian to determine rotational and fine structure parameters. The spin-rotation constants of the (C) over tilde (2)A(1) state were calculated using the pure precession model. These values were found to be in relatively good agreement with the experimentally determined parameters, however slight differences suggest that the unpaired electron in the (C) over tilde (2)A(1) state is not entirely of p orbital character. A molecular structure was also determined for the (C) over tilde (2)A(1) state of SrNH2. The strontium-nitrogen bond was found to decrease by 0.011 angstrom while the H-N-H bond angle was found to increase by 2.5 degrees between the (X) over tilde (2)A(1) and (C) over tilde (2)A(1) states. A small positive inertial defect was calculated for the (C) over tilde (2)A(1) state, indicating that the molecule is planar. (c) 2005 Elsevier Inc. All rights reserved.
| Original language | English |
|---|---|
| Pages (from-to) | 269-274 |
| Number of pages | 6 |
| Journal | JOURNAL OF MOLECULAR SPECTROSCOPY |
| Volume | 233 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - Oct 2005 |
Keywords
- SrNH2
- strontium-containing molecules
- monoamides
- laser spectroscopy
- alkaline-earth metal bond
- RESOLUTION LASER SPECTROSCOPY
- ALKALINE-EARTH
- CANH2
- SYSTEM
- (X)OVER-TILDE(2)A(1)
- MOLECULES
- SPECTRUM
- STRONTIUM
- (2)A(1)
- CALCIUM