Structure Data of Free Polyatomic Molecules
27
IR
ArHOSi+
State
υ=0
ν1
ν 1+ ν s
ν1+2νb
Rcm [Å] a)
4.062(1)
4.010(9)
4.040(2)
3.996(3)
Hydroxysilyliumylidene – argon (1/1)
C∞v
(weakly bound complex)
(effective symmetry class)
(large-amplitude motion)
H–O–Si+ ⋅ Ar
a
r(Ar…H) [Å] ) r(O–Si) [Å] r(O–H) [Å]
0.940 b)
2.186(1)
1.537 b)
0.940 b)
2.134(9)
1.537 b)
b
0.940 b)
2.164(2)
1.537 )
b
0.940 b)
2.120(3)
1.537 )
The structure of the linear H-bound complex was
determined from the rovibrational IR photodissociation
spectra of the ν1 fundamental and the ν1+νs and ν1+2νb
combination bands.
The geometry of the monomer subunit was assumed to be unchanged upon complexation.
a
) Estimated standard errors.
) Assumed.
b
Olkhov, R.V., Nizkorodov, S.A., Dopfer, O.: Chem. Phys. 239 (1998) 393.
Landolt-Börnstein
New Series II/28A