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

using model chemistry: PBEPBE/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 PBEPBE/cc-pVDZ
 hartrees
Energy at 0K-330.974740
Energy at 298.15K-330.969493
Nuclear repulsion energy61.925085
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 PBEPBE/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 A 2982 2964 5.06      
2 A 2134 2121 59.31      
3 A 1216 1209 6.22      
4 A 890 884 171.66      
5 A 676 673 10.18      
6 A 199 198 0.00      
7 E 3077 3059 4.23      
7 E 3077 3059 4.23      
8 E 2144 2132 120.31      
8 E 2144 2132 120.33      
9 E 1387 1379 2.55      
9 E 1387 1379 2.55      
10 E 914 908 23.13      
10 E 914 908 23.13      
11 E 849 844 62.11      
11 E 849 844 62.11      
12 E 499 497 5.68      
12 E 499 497 5.68      

Unscaled Zero Point Vibrational Energy (zpe) 12917.5 cm-1
Scaled (by 0.9942) Zero Point Vibrational Energy (zpe) 12842.5 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 PBEPBE/cc-pVDZ
See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/cc-pVDZ

Point Group is C3

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.257
Si2 0.000 0.000 0.641
H3 -1.037 -0.000 -1.650
H4 0.518 0.898 -1.650
H5 0.519 -0.898 -1.650
H6 1.414 -0.000 1.174
H7 -0.707 1.225 1.174
H8 -0.707 -1.225 1.174

Atom - Atom Distances (Å)
  C1 Si2 H3 H4 H5 H6 H7 H8
C11.89811.10861.10861.10862.81292.81292.8129
Si21.89812.51412.51412.51411.51141.51141.5114
H31.10862.51411.79581.79583.73923.09573.0955
H41.10862.51411.79581.79583.09573.09553.7392
H51.10862.51411.79581.79583.09553.73923.0957
H62.81291.51143.73923.09573.09552.44942.4494
H72.81291.51143.09573.09553.73922.44942.4494
H82.81291.51143.09553.73923.09572.44942.4494

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 110.670 C1 Si2 H7 110.670
C1 Si2 H8 110.670 Si2 C1 H3 110.725
Si2 C1 H4 110.725 Si2 C1 H5 110.725
H3 C1 H4 108.189 H3 C1 H5 108.189
H4 C1 H5 108.189 H6 Si2 H7 108.246
H6 Si2 H8 108.246 H7 Si2 H8 108.246
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.210      
2 Si 0.144      
3 H 0.060      
4 H 0.060      
5 H 0.060      
6 H -0.038      
7 H -0.038      
8 H -0.038      


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 -0.848 0.848
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.949 0.000 0.000
y 0.000 -22.949 0.000
z 0.000 0.000 -23.052
Traceless
 xyz
x 0.051 0.000 0.000
y 0.000 0.051 0.000
z 0.000 0.000 -0.103
Polar
3z2-r2-0.206
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 5.522 0.000 0.000
y 0.000 5.522 0.000
z 0.000 0.000 6.329


<r2> (average value of r2) Å2
<r2> 51.113
(<r2>)1/2 7.149