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

using model chemistry: wB97X-D/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 wB97X-D/aug-cc-pVTZ
 hartrees
Energy at 0K-331.220653
Energy at 298.15K-331.226610
HF Energy-331.220653
Nuclear repulsion energy62.813863
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 wB97X-D/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 3064 2931 4.54      
2 A1 2197 2102 64.02      
3 A1 1301 1244 16.37      
4 A1 945 904 209.48      
5 A1 716 685 10.29      
6 A2 205 196 0.00      
7 E 3145 3009 7.49      
7 E 3145 3009 7.46      
8 E 2194 2099 141.24      
8 E 2194 2099 141.19      
9 E 1472 1408 3.04      
9 E 1472 1408 3.03      
10 E 965 923 41.04      
10 E 965 923 41.20      
11 E 890 852 59.63      
11 E 890 852 59.55      
12 E 525 502 10.01      
12 E 525 502 10.01      

Unscaled Zero Point Vibrational Energy (zpe) 13404.6 cm-1
Scaled (by 0.9566) Zero Point Vibrational Energy (zpe) 12822.8 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 wB97X-D/aug-cc-pVTZ
ABC
1.87728 0.36430 0.36430

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/aug-cc-pVTZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.242
Si2 0.000 0.000 0.634
H3 0.000 -1.019 -1.630
H4 -0.882 0.509 -1.630
H5 0.882 0.509 -1.630
H6 0.000 1.391 1.157
H7 -1.204 -0.695 1.157
H8 1.204 -0.695 1.157

Atom - Atom Distances (Å)
  C1 Si2 H3 H4 H5 H6 H7 H8
C11.87601.09011.09011.09012.77302.77302.7730
Si21.87602.48242.48242.48241.48591.48591.4859
H31.09012.48241.76461.76463.68403.05313.0531
H41.09012.48241.76461.76463.05313.05313.6840
H51.09012.48241.76461.76463.05313.68403.0531
H62.77301.48593.68403.05313.05312.40892.4089
H72.77301.48593.05313.05313.68402.40892.4089
H82.77301.48593.05313.68403.05312.40892.4089

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 110.611 C1 Si2 H7 110.611
C1 Si2 H8 110.611 Si2 C1 H3 110.833
Si2 C1 H4 110.833 Si2 C1 H5 110.833
H3 C1 H4 108.076 H3 C1 H5 108.076
H4 C1 H5 108.076 H6 Si2 H7 108.308
H6 Si2 H8 108.308 H7 Si2 H8 108.308
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.935      
2 Si 0.744      
3 H 0.263      
4 H 0.263      
5 H 0.263      
6 H -0.200      
7 H -0.200      
8 H -0.200      


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 -0.785 0.785
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.951 0.000 0.000
y 0.000 -22.951 0.000
z 0.000 0.000 -23.198
Traceless
 xyz
x 0.123 0.000 0.000
y 0.000 0.123 0.000
z 0.000 0.000 -0.247
Polar
3z2-r2-0.493
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 6.071 0.000 0.000
y 0.000 6.074 -0.000
z 0.000 -0.000 7.068


<r2> (average value of r2) Å2
<r2> 50.164
(<r2>)1/2 7.083