Gas-phase structure of bis(trifluoromethyl) arsinous azide (CF3)2As N3

Abstract

Bis(trifluoromethyl) arsinous azide was synthesized by reacting bis (trifluoromethyl) arsinous chloride with sodium azide. Its geometric structure was studied by gas-phase electron diffraction. The molecule possesses Cs symmetry and the orientation of the azide group is trans to the CAsC bisector. The following geometric parameters were derived (ra distances in Å and ∠α angles in degrees, error limits are 3σ values and refer to the last digit): As-C=2.013(5), As-N=1.849(8), C-F=1.338(2), Nα-Nβ=1.224(10), Nβ-Nω=1.124(10), CAsC=97.8(1), CAsN=99.3(10), FCF=107.9(3), AsNαNβ=119.1(29), NαNβNω=176(3). The structural parameters of the azide group are compared to those for other azides, for which gas-phase structures have been reported. © 1992.