| Autor: |
Airola, Marc B., Morse, Michael D. |
| Předmět: |
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| Zdroj: |
Journal of Chemical Physics; 1/22/2002, Vol. 116 Issue 4, p1313, 5p, 1 Chart, 2 Graphs |
| Abstrakt: |
High-resolution laser-induced fluorescence spectroscopy has been used to investigate the 18 163 cm-1 band of Pt[sub 2] in a supersonically cooled molecular beam. Rotational constants of the ground and excited states were extracted from the rotationally resolved spectrum and determined to be B[sub 0][sup ″]=0.031 754(12) cm[sup -1] and B[sub 0][sup ′]=0.028 672(11) cm[sup -1], respectively. These values correspond to ground- and excited-state bond lengths of r[sub 0][sup ″]=2.33297(44) Å and r[sub 0][sup ′]=2.455 16(47) Å, respectively. Nuclear spin statistics that are observed in the spectrum demonstrate that the ground state is of either 0[sub g][sup +] or 0[sub u][sup -] symmetry. Of these, 0[sub g][sup +] is by far the more probable. Comparisons with Au[sub 2] are made, suggesting that it may be appropriate to consider Pt[sub 2] as having a double bond. © 2002 American Institute of Physics. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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