Structure Data of Free Polyatomic Molecules
456
MW
C3H10FP
r0
Rcm
P...F
θ0
α a)
ϕ a)
Trimethylphosphine – hydrogen fluoride (1/1)
C3v
(weakly bound complex)
(effective symmetry class)
(large-amplitude motion)
CH3
(CH3)3P · HF
3.626(3)
3.121(3)
Å
(CH3)3P · DF
3.586(3)
3.123(3)
(CD3)3P · HF
3.678(4)
3.115(4)
(CH3)3P · HF
7(3)
13.4(16)
deg
(CH3)3P · DF
7(3)
11.2(14)
(CD3)3P · HF
7(3)
13.4(16)
The intermolecular binding energy is
relatively weak; the intermolecular
stretching force constant is 17.2 N m–1.
a
) Average value. See figure for the definition.
Cooke, S.A., Legon, A.C.: Chem. Phys. Lett. 288 (1998) 441.
Landolt-Börnstein
New Series II/28C
H3C
P
CH3
. HF