Structure Data of Free Polyatomic Molecules
37
MW, IR
CF2Se
a
Selenocarbonyl fluoride
Carbonoselenoic difluoride
θ0
deg
107.64(1)
θz
deg
107.74(4)
θe a )
deg
107.74(4)
r0
C–F
C=Se
Å
1.3117(1)
1.7400(2)
F–C–F
rz
C–F
C=Se
Å
1.3123(4)
1.7420(5)
F–C–F
re a)
C–F
C=Se
Å
1.309(2)
1.739(2)
F–C–F
C2v
Se
F
F
) Derived from the rz structure. rz was extrapolated to re using the relation
rz = re + (3/2)au2 + K, where u2 and K denote the contributions of the mean amplitude and
perpendicular amplitude of vibrations, respectively, and a is an anharmonicity parameter
that may be estimated by a diatomic model.
Bürger, H., Demaison, J., Dréan, P., Jerzembeck, W., Merke, I., Stahl, W.: Ber. Bunsenges.
Phys. Chem. 102 (1998) 872.
II/25B(3, 94)
Landolt-Börnstein
New Series II/28B