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THE PURE ROTATIONAL SPECTRUM OF FeNC (X $^{6}\Delta_i$): IT HAD TO BE THERE!

Please use this identifier to cite or link to this item: http://hdl.handle.net/1811/31345

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Title: THE PURE ROTATIONAL SPECTRUM OF FeNC (X $^{6}\Delta_i$): IT HAD TO BE THERE!
Creators: Flory, M. A.; Ziurys, L. M.
Issue Date: 2007
Abstract: The pure rotational spectrum of FeNC has been measured in its ground electronic and vibrational state using direct absorption methods. The radical was synthesized from gas-phase Fe(CO)$_5$ and (CN)$_2$ in an AC discharge and could also be produced using metal vapor and (CN)$_2$ in a Broida oven. Eighteen rotational transitions have been recorded in the frequency range 150-505 GHz, many containing all six spin components. In addition, Renner-Teller effects have been observed for the excited vibrational {\it v}$_2$ bending mode. The $\Omega$ = 3/2, 1/2, and -1/2 spin states appear to exhibit significant $\Lambda$-doubling. Preliminary results from isotopic substitution of $^{54}$Fe, observed in natural abundance, indicate that the ground state structure is likely the linear isocyanide with a rotational constant near 4.1 GHz. Substitution of $^{13}$C is underway and will yield a definitive structure. The data are currently being analyzed with a case (a) Hamiltonian, and spectroscopic constants for rotation, fine structure, and $\Lambda$-doubling are being established.
URI: http://hdl.handle.net/1811/31345
Other Identifiers: 2007-FB-09
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