Structure Data of Free Polyatomic Molecules
109
IR
CH3Ar +2
r0
Ar...Ar
C...Ar(1)
C...Ar(2)
Methylium – argon (1/2)
(weakly bound complex)
Å a)
4.84(2)
2.02 d)
2.80(8)
C3v
(effective symmetry class)
(large-amplitude motion)
CH 3+ ⋅ 2Ar
deg
θ0
ϕ b) 99 c)
The structure of the π-bound complex was determined from
the rotationally resolved IR photodissociation spectrum of the degenerate asymmetric C–H
stretch vibration ν3.
a
) Uncertainties were not identified.
) See figure for the definition.
c
) Assumed at the value from MP2 calculations.
d
) Assumed.
b
Olkhov, R.V., Nizkorodov, S.A., Dopfer, O.: J. Chem. Phys. 108 (1998) 10046.
Landolt-Börnstein
New Series II/28B