MICROWAVE SPECTRUM, DIPOLE MOMENT, BARRIER TO INTERNAL ROTATION, AND MOLECULAR STRUCTURE OF GERMYLAZIDE

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1989

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Ohio State University

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Abstract

The microwave spectra of three isotopic Ge species of germyl azide, $GeH_{3}N_{3}$, have been assigned. The splittings due to internal rotation of the germyl group have been analyzed yielding a threefold barrier of $86.6(1) cm^{-1}$. An electric dipole moment of 2.58(2) D has been determined from the Stark effect. The following refined structural parameters have been obtained with a fixed and slightly bent azide group; $r(GeN) = 1.866(12)\AA, r(GeH) = 1.497(8)\AA, (GeNN) = 115.9(14)^{\circ}, HGeH) = 112.2(10)^{\circ}$, and a tilt of the symmetric germyl group of $4.0^{\circ}$ away from the azide group. These results will be compared with the structures and barriers in other Group IVA-pscudohalides.

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Author Institution: Department of Chemistry, University of South Carolina Columbia

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