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

using model chemistry: BLYP/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3 1A1
Energy calculated at BLYP/6-311G*
 hartrees
Energy at 0K-331.176155
Energy at 298.15K-331.170955
Nuclear repulsion energy62.191978
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 BLYP/6-311G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 2960 2952 9.68      
2 A1 2159 2153 70.23      
3 A1 1292 1289 12.37      
4 A1 923 921 227.31      
5 A1 669 667 9.55      
6 A2 186 186 0.00      
7 E 3025 3017 15.41      
7 E 3025 3017 15.41      
8 E 2161 2155 147.95      
8 E 2161 2155 147.98      
9 E 1455 1452 4.90      
9 E 1455 1452 4.90      
10 E 939 937 42.27      
10 E 939 937 42.27      
11 E 883 880 67.31      
11 E 883 880 67.31      
12 E 515 514 11.06      
12 E 515 514 11.06      

Unscaled Zero Point Vibrational Energy (zpe) 13071.6 cm-1
Scaled (by 0.9975) Zero Point Vibrational Energy (zpe) 13039.0 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 BLYP/6-311G*
See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/6-311G*

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.256
Si2 0.000 0.000 0.642
H3 0.000 -1.025 -1.654
H4 -0.888 0.513 -1.654
H5 0.888 0.513 -1.654
H6 0.000 1.399 1.171
H7 -1.211 -0.699 1.171
H8 1.211 -0.699 1.171

Atom - Atom Distances (Å)
  C1 Si2 H3 H4 H5 H6 H7 H8
C11.89741.09991.09991.09992.80102.80102.8010
Si21.89742.51452.51452.51451.49541.49541.4954
H31.09992.51451.77561.77563.72263.09143.0914
H41.09992.51451.77561.77563.09143.09143.7226
H51.09992.51451.77561.77563.09143.72263.0914
H62.80101.49543.72263.09143.09142.42232.4223
H72.80101.49543.09143.09143.72262.42232.4223
H82.80101.49543.09143.72263.09142.42232.4223

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 110.737 C1 Si2 H7 110.737
C1 Si2 H8 110.737 Si2 C1 H3 111.248
Si2 C1 H4 111.248 Si2 C1 H5 111.248
H3 C1 H4 107.637 H3 C1 H5 107.637
H4 C1 H5 107.637 H6 Si2 H7 108.176
H6 Si2 H8 108.176 H7 Si2 H8 108.176
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.903      
2 Si 0.488      
3 H 0.221      
4 H 0.221      
5 H 0.221      
6 H -0.082      
7 H -0.082      
8 H -0.082      


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 -0.778 0.778
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.437 0.000 0.000
y 0.000 -23.437 0.000
z 0.000 0.000 -23.740
Traceless
 xyz
x 0.151 0.000 0.000
y 0.000 0.151 0.000
z 0.000 0.000 -0.303
Polar
3z2-r2-0.606
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 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000


<r2> (average value of r2) Å2
<r2> 51.273
(<r2>)1/2 7.160