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

using model chemistry: B97D3/TZVP

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/TZVP
 hartrees
Energy at 0K-331.198723
Energy at 298.15K-331.204580
HF Energy-331.198723
Nuclear repulsion energy62.219158
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/TZVP
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 2987 2944 9.29      
2 A1 2159 2128 70.63      
3 A1 1274 1256 10.14      
4 A1 917 904 212.87      
5 A1 667 657 11.02      
6 A2 188 185 0.00      
7 E 3067 3023 12.02      
7 E 3067 3023 12.02      
8 E 2164 2133 148.58      
8 E 2164 2133 148.57      
9 E 1444 1423 3.91      
9 E 1444 1423 3.91      
10 E 937 924 37.78      
10 E 937 924 37.77      
11 E 876 864 60.25      
11 E 876 864 60.25      
12 E 514 506 10.29      
12 E 514 506 10.29      

Unscaled Zero Point Vibrational Energy (zpe) 13097.7 cm-1
Scaled (by 0.9856) Zero Point Vibrational Energy (zpe) 12909.1 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/TZVP
ABC
1.85016 0.35628 0.35628

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/TZVP

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.257
Si2 0.000 0.000 0.641
H3 0.000 -1.024 -1.647
H4 -0.887 0.512 -1.647
H5 0.887 0.512 -1.647
H6 0.000 1.402 1.168
H7 -1.214 -0.701 1.168
H8 1.214 -0.701 1.168

Atom - Atom Distances (Å)
  C1 Si2 H3 H4 H5 H6 H7 H8
C11.89861.09581.09581.09582.80112.80112.8011
Si21.89862.50722.50722.50721.49731.49731.4973
H31.09582.50721.77381.77383.71603.08263.0826
H41.09582.50721.77381.77383.08263.08263.7160
H51.09582.50721.77381.77383.08263.71603.0826
H62.80111.49733.71603.08263.08262.42782.4278
H72.80111.49733.08263.08263.71602.42782.4278
H82.80111.49733.08263.71603.08262.42782.4278

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 110.587 C1 Si2 H7 110.587
C1 Si2 H8 110.587 Si2 C1 H3 110.842
Si2 C1 H4 110.842 Si2 C1 H5 110.842
H3 C1 H4 108.066 H3 C1 H5 108.066
H4 C1 H5 108.066 H6 Si2 H7 108.333
H6 Si2 H8 108.333 H7 Si2 H8 108.333
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.499      
2 Si 0.402      
3 H 0.128      
4 H 0.128      
5 H 0.128      
6 H -0.096      
7 H -0.096      
8 H -0.096      


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 -0.747 0.747
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.116 0.000 0.000
y 0.000 -23.116 0.000
z 0.000 0.000 -23.467
Traceless
 xyz
x 0.176 0.000 0.000
y 0.000 0.176 0.000
z 0.000 0.000 -0.351
Polar
3z2-r2-0.702
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 5.706 0.000 0.000
y 0.000 5.705 0.000
z 0.000 0.000 6.566


<r2> (average value of r2) Å2
<r2> 51.026
(<r2>)1/2 7.143