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All results from a given calculation for CH3SiH3 (methyl silane)

using model chemistry: B97D3/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3 1A1
Energy calculated at B97D3/6-311+G(3df,2p)
 hartrees
Energy at 0K-331.209100
Energy at 298.15K-331.214957
HF Energy-331.209100
Nuclear repulsion energy62.536243
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at B97D3/6-311+G(3df,2p)
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 2981 2942 8.00      
2 A1 2157 2129 68.13      
3 A1 1265 1248 9.36      
4 A1 926 913 201.31      
5 A1 674 665 11.68      
6 A2 186 183 0.00      
7 E 3059 3019 11.01      
7 E 3059 3019 11.01      
8 E 2160 2132 140.19      
8 E 2160 2132 140.21      
9 E 1437 1419 2.23      
9 E 1437 1419 2.23      
10 E 940 928 36.50      
10 E 940 928 36.50      
11 E 870 858 55.33      
11 E 870 858 55.33      
12 E 514 507 8.82      
12 E 514 507 8.83      

Unscaled Zero Point Vibrational Energy (zpe) 13073.2 cm-1
Scaled (by 0.987) Zero Point Vibrational Energy (zpe) 12903.2 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at B97D3/6-311+G(3df,2p)
ABC
1.86254 0.36079 0.36079

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/6-311+G(3df,2p)

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.248
Si2 0.000 0.000 0.637
H3 0.000 -1.023 -1.638
H4 -0.886 0.511 -1.638
H5 0.886 0.511 -1.638
H6 0.000 1.396 1.161
H7 -1.209 -0.698 1.161
H8 1.209 -0.698 1.161

Atom - Atom Distances (Å)
  C1 Si2 H3 H4 H5 H6 H7 H8
C11.88511.09461.09461.09462.78452.78452.7845
Si21.88512.49472.49472.49471.49091.49091.4909
H31.09462.49471.77131.77133.69963.06683.0668
H41.09462.49471.77131.77133.06683.06683.6996
H51.09462.49471.77131.77133.06683.69963.0668
H62.78451.49093.69963.06683.06682.41732.4173
H72.78451.49093.06683.06683.69962.41732.4173
H82.78451.49093.06683.69963.06682.41732.4173

picture of methyl silane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 Si2 H6 110.592 C1 Si2 H7 110.592
C1 Si2 H8 110.592 Si2 C1 H3 110.893
Si2 C1 H4 110.893 Si2 C1 H5 110.893
H3 C1 H4 108.013 H3 C1 H5 108.013
H4 C1 H5 108.013 H6 Si2 H7 108.328
H6 Si2 H8 108.328 H7 Si2 H8 108.328
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.560      
2 Si 0.400      
3 H 0.131      
4 H 0.131      
5 H 0.131      
6 H -0.078      
7 H -0.078      
8 H -0.078      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -0.805 0.805
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.136 0.000 0.000
y 0.000 -23.136 0.000
z 0.000 0.000 -23.376
Traceless
 xyz
x 0.120 0.000 0.000
y 0.000 0.120 0.000
z 0.000 0.000 -0.240
Polar
3z2-r2-0.480
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.121 0.000 0.000
y 0.000 6.122 0.000
z 0.000 0.000 7.316


<r2> (average value of r2) Å2
<r2> 50.610
(<r2>)1/2 7.114