Structure Data of Free Polyatomic Molecules
315
MW
Landolt-Börnstein
New Series II/28B
C2H8Si
Ethylsilane
rs
C(2)–Si
C(1)–C(2)
C(2)–H
Si–H(s)
Si–H(a)
C(1)–H(s)
C(1)–H(a)
Å
1.869(1)
1.541(1)
1.095(1)
1.476(3)
1.480(3)
1.092(1)
1.092(1)
r0 b)
C(2)–Si
C(1)–C(2)
C(2)–H
Si–H(s)
Si–H(a)
C(1)–H(s)
C(1)–H(a)
Å
1.870(2)
1.538(2)
1.096(1)
1.481(1)
1.480(1)
1.099(2)
1.093(1)
θs
C(1)–C(2)–Si
C(1)–C(2)–H
Si–C(2)–H
H–C(2)–H
δ a)
C(2)–Si–H(s)
C(2)–Si–H(a)
H(s)–Si–H(a)
H(a)–Si–H(a)
γ(SiH3) a)
θ(SiH3) a)
β(SiH3) a)
C(2)–C(1)–H(s)
C(2)–C(1)–H(a)
H(s)–C(1)–H(a)
H(a)–C(1)–H(a)
γ(C(1)H3) a)
θ(C(1)H3) a)
β(C(1)H3) a)
θ 0 b)
C(1)–C(2)–Si
C(1)–C(2)–H
Si–C(2)–H
H–C(2)–H
δ a)
C(2)–Si–H(s)
C(2)–Si–H(a)
H(s)–Si–H(a)
H(a)–Si–H(a)
γ(SiH3) a)
θ(SiH3) a)
β(SiH3) a)
C(2)–C(1)–H(s)
C(2)–C(1)–H(a)
H(s)–C(1)–H(a)
H(a)–C(1)–H(a)
γ(C(1)H3) a)
θ(C(1)H3) a)
β(C(1)H3) a)
Cs
deg
113.00(8)
110.20(5)
108.62(5)
105.90(5)
1.48(25)
111.03(8)
109.65(5)
109.07(5)
108.30(12)
110.12(7)
–0.92(5)
0.77(17)
111.55(13)
111.02(5)
107.92(8)
107.22(5)
111.20(7)
–0.35(10)
0.70(13)
deg
113.02(3)
110.35(22)
108.52(13)
105.75(13)
1.70(33)
110.87(5)
109.63(7)
109.07(15)
108.47(10)
109.67(12)
–1.18(13)
1.15(18)
110.80(20)
110.93(8)
108.28(30)
107.42(18)
110.88(13)
0.08(20)
0.87(50)
H 3C
SiH3
Structure Data of Free Polyatomic Molecules
Atom
C(2)
Si
C(1)
H(CH2)
H(s)(CH3)
H(a)(CH3)
H(s)(SiH3)
H(a)(SiH3)
as [Å]
–0.59443
1.10122
–1.73708
–0.67666
–2.71598
–1.68138
2.16106
1.25459
bs [Å]
0.66717
–0.11852
–0.36648
1.32201
0.11750
–1.01196
0.90858
–0.97175
cs [Å]
0.0
0.0
0.0
±0.87427
0.0
±0.87906
0.0
±1.19983
a
) δ = [αin(C(1)–C(2)–H) – αin(H–C(2)–Si)]/2, cos αin = cos αi/cos [α(H–C–H)/2],
γ = [2α(C–X–H(a)) + α(C–X–H(s))]/3, θ = 2 [α(C–X–H(a)) – α(C–X–H(s))]/3,
β = α(H(s)–X–H(a)) – α(H(a)–X–H(a)), X = C or Si.
b
) By a diagnostic least-squares method.
Niide, Y., Hayashi, M.: J. Mol. Spectrosc. 216 (2002) 52.
Replaces II/25B(3,943)
Landolt-Börnstein
New Series II/28B