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

using model chemistry: wB97X-D/cc-pVDZ

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/cc-pVDZ
 hartrees
Energy at 0K-331.181766
Energy at 298.15K-331.187725
HF Energy-331.181766
Nuclear repulsion energy62.633645
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/cc-pVDZ
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 3072 2926 7.82      
2 A1 2210 2105 77.80      
3 A1 1319 1256 24.96      
4 A1 952 907 237.65      
5 A1 713 679 9.71      
6 A2 202 192 0.00      
7 E 3162 3012 8.78      
7 E 3162 3012 8.81      
8 E 2206 2101 180.13      
8 E 2206 2101 180.18      
9 E 1479 1409 6.44      
9 E 1479 1409 6.43      
10 E 973 927 48.39      
10 E 973 927 48.47      
11 E 901 858 67.40      
11 E 901 858 67.35      
12 E 527 502 11.14      
12 E 527 502 11.09      

Unscaled Zero Point Vibrational Energy (zpe) 13481.0 cm-1
Scaled (by 0.9526) Zero Point Vibrational Energy (zpe) 12842.0 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 wB97X-D/cc-pVDZ
ABC
1.86934 0.36191 0.36191

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.246
Si2 0.000 0.000 0.636
H3 0.000 -1.022 -1.636
H4 -0.885 0.511 -1.636
H5 0.885 0.511 -1.636
H6 0.000 1.392 1.159
H7 -1.205 -0.696 1.159
H8 1.205 -0.696 1.159

Atom - Atom Distances (Å)
  C1 Si2 H3 H4 H5 H6 H7 H8
C11.88221.09441.09441.09442.77882.77882.7788
Si21.88222.49202.49202.49201.48691.48691.4869
H31.09442.49201.77071.77073.69373.06183.0618
H41.09442.49201.77071.77073.06183.06183.6937
H51.09442.49201.77071.77073.06183.69373.0618
H62.77881.48693.69373.06183.06182.41092.4109
H72.77881.48693.06183.06183.69372.41092.4109
H82.77881.48693.06183.69373.06182.41092.4109

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 110.586 C1 Si2 H7 110.586
C1 Si2 H8 110.586 Si2 C1 H3 110.903
Si2 C1 H4 110.903 Si2 C1 H5 110.903
H3 C1 H4 108.002 H3 C1 H5 108.002
H4 C1 H5 108.002 H6 Si2 H7 108.334
H6 Si2 H8 108.334 H7 Si2 H8 108.334
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.731      
2 Si 0.531      
3 H 0.179      
4 H 0.179      
5 H 0.179      
6 H -0.113      
7 H -0.113      
8 H -0.113      


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 -0.737 0.737
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.988 0.000 0.000
y 0.000 -22.988 0.000
z 0.000 0.000 -23.309
Traceless
 xyz
x 0.161 0.000 0.000
y 0.000 0.161 0.000
z 0.000 0.000 -0.321
Polar
3z2-r2-0.643
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 5.214 0.000 0.000
y 0.000 5.217 -0.000
z 0.000 -0.000 6.003


<r2> (average value of r2) Å2
<r2> 50.419
(<r2>)1/2 7.101