Structure Data of Free Polyatomic Molecules
47
MW
Ar3H2S
Å a)
rs
Ar...Ar
3.865(5)
Ar...cm(H2S) 4.112(5)
Hydrogen sulfide – argon (1/3)
(weakly bound complex)
θs
b
θ )
deg a)
13(2)
C3v
(effective symmetry class)
(large-amplitude motion)
H2S · 3Ar
The barrier for the pseudorotation in which the
protons hop between the argons is determined to
be about 8 cm–1 making the H2S moiety very mobile
and effectively making the complex a symmetric top.
a
) Uncertainties were not estimated in the original paper.
) Angle between the C2 axis of the H2S and the C3 axis of the complex.
b
Arunan, E., Emilsson, T., Gutowsky, H.S., Dykstra, C.E.: J. Chem. Phys. 114 (2001) 1242.
Landolt-Börnstein
New Series II/28A