An electron diffraction determination of the molecular structure of trifluoromethyl selenium cyanide

The molecular structure of F3CSeCN has been determined, in the vapour phase by the sector microphotometer method of electron diffraction. Two molecular conformations are consistent with the experimental data; for the physically more reasonable structure, the principal parameters are: C-F 1.332 ± 0.007, Se-C(F3) 1.984± 0.020, Se-C(N) 1.854 ± 0.016, N-C 1.152±0.020 Å and angle C-Se-C, 92.2 ± 2.0°.