Structure Data of Free Polyatomic Molecules
894
ED
C10H27GaSi3
ra
Ga–C* b)
C*–Si b)
Si–C
C–H
Å a)
2.064(17)
1.882(16)
1.893(7)
1.107(4)
[Tris(trimethylsilyl)methyl]gallium
θa
Ga–C*–Si b)
Si–C*–Si b)
C–Si–C
Si–C–H
τ (Ga–C*– Si–C) b) c)
τ(C*–Si–C–H) b) c)
tilt[Si(CH3)3] d)
deg a)
106.2(9)
112.5(8)
104.6(7)
112.8(9)
43(2)
56(31)
1.2(13)
C3 assumed
GaC(Si(CH3)3)3
Local C3 symmetry for each Si(CH3)3 group and local C3v symmetry for each SiCH3 fragment
were assumed.
The nozzle temperatures were ca. 150 and 200 °C.
a
) Twice the estimated standard errors
including an estimated scale error.
b
) C* denotes the central carbon atom.
c
) τ = 0° for the syn position.
d
) Tilt angle is positive when the symmetry
axis of the Si(CH3)3 group intersects the
molecular symmetry axis below C*.
Haaland, A., Martinsen, K.-G., Volden, H.V., Kaim, W., Waldhör, E., Uhl, W., Schütz, U.:
Organometallics 15 (1996) 1146.
Landolt-Börnstein
New Series II/28D