PURE ROTATIONAL SPECTROSCOPY OF TRANSITION METAL NITRIDES: MILLIMETER-WAVE STUDIES OF $FeN (X^{2}\Delta_{i})$ AND $CrN (X^{4}\Sigma^{-})$
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Date
2001
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Publisher
Ohio State University
Abstract
The pure rotational spectrum of FeN in its $X^{2}\Delta^{i}$ electronic ground state has been observed in the region of 190 - 530 GHz using direct absorption techniques. The spectrum of CrN has been recorded in its $X^{4}\Sigma^{-}$ state as well. These nitrides were formed by reacting metal vapor, produced by a Broida-type oven, with either $N_{2}$ or $NH_{3}$ under d.c. discharge conditions. For FeN, eight rotational transitions were measured in the $\Omega = 5/2$ spin orbit component, where no evidence of A-type doubling was observed. For CrN, five rotational transitions were recorded in which all fine structure components were resolved. These data have been analyzed and rotational and certain fine-structure parameters have been determined. Bonding in metal nitride species is also discussed.
Description
Author Institution: University of Arizona; Department of Chemistry, University of Arizona; Department of Astronomy, and Stewards Observatory, University of Arizona