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

using model chemistry: B97D3/aug-cc-pVTZ

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/aug-cc-pVTZ
 hartrees
Energy at 0K-331.210717
Energy at 298.15K-331.216570
HF Energy-331.210717
Nuclear repulsion energy62.416565
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/aug-cc-pVTZ
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 2986 2941 7.84      
2 A1 2161 2128 68.06      
3 A1 1264 1244 8.03      
4 A1 920 906 201.57      
5 A1 671 660 11.49      
6 A2 183 180 0.00      
7 E 3063 3016 10.64      
7 E 3063 3016 10.64      
8 E 2166 2133 142.84      
8 E 2166 2133 142.83      
9 E 1437 1415 2.07      
9 E 1437 1415 2.07      
10 E 938 924 36.69      
10 E 938 924 36.67      
11 E 871 857 54.86      
11 E 871 857 54.88      
12 E 513 505 9.57      
12 E 513 505 9.58      

Unscaled Zero Point Vibrational Energy (zpe) 13080.0 cm-1
Scaled (by 0.9847) Zero Point Vibrational Energy (zpe) 12879.9 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/aug-cc-pVTZ
ABC
1.85887 0.35901 0.35901

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/aug-cc-pVTZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.252
Si2 0.000 0.000 0.639
H3 0.000 -1.023 -1.642
H4 -0.886 0.511 -1.642
H5 0.886 0.511 -1.642
H6 0.000 1.398 1.165
H7 -1.211 -0.699 1.165
H8 1.211 -0.699 1.165

Atom - Atom Distances (Å)
  C1 Si2 H3 H4 H5 H6 H7 H8
C11.89031.09451.09451.09452.79152.79152.7915
Si21.89032.49942.49942.49941.49351.49351.4935
H31.09452.49941.77111.77113.70623.07383.0738
H41.09452.49941.77111.77113.07383.07383.7062
H51.09452.49941.77111.77113.07383.70623.0738
H62.79151.49353.70623.07383.07382.42112.4211
H72.79151.49353.07383.07383.70622.42112.4211
H82.79151.49353.07383.70623.07382.42112.4211

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 110.623 C1 Si2 H7 110.623
C1 Si2 H8 110.623 Si2 C1 H3 110.896
Si2 C1 H4 110.896 Si2 C1 H5 110.896
H3 C1 H4 108.009 H3 C1 H5 108.009
H4 C1 H5 108.009 H6 Si2 H7 108.295
H6 Si2 H8 108.295 H7 Si2 H8 108.295
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.575      
2 Si 0.889      
3 H 0.150      
4 H 0.150      
5 H 0.150      
6 H -0.254      
7 H -0.254      
8 H -0.254      


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 -0.787 0.787
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.170 0.000 0.000
y 0.000 -23.170 0.000
z 0.000 0.000 -23.430
Traceless
 xyz
x 0.130 0.000 0.000
y 0.000 0.130 0.000
z 0.000 0.000 -0.261
Polar
3z2-r2-0.522
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 6.316 0.000 0.000
y 0.000 6.316 -0.000
z 0.000 -0.000 7.490


<r2> (average value of r2) Å2
<r2> 50.793
(<r2>)1/2 7.127