Structure Data of Free Polyatomic Molecules
132
MW
CH4O2
r0
O(2)...H(1)
O(1)...O(2)
O(1)...H(3)
Rcm
Formaldehyde – water (1/1)
(weakly bound complex)
Å a)
2.012(29)
2.94 c)
2.68 c)
3.00(3)
θ0
φ b)
φ b)
deg a)
95.4(31)
163(9)
The intermolecular stretching force constant kσ is 8.93 N m–1.
a
) Twice the estimated standard errors.
) See figure for the definition.
c
) Dependent parameter.
b
Lovas, F.J., Lugez, C.L.: J. Mol. Spectrosc. 179 (1996) 320.
Landolt-Börnstein
New Series II/28B
Cs
(effective symmetry class)
(large-amplitude motion)
H2CO · H2O