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

using model chemistry: B3LYP/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3 1A1
Energy calculated at B3LYP/Def2TZVPP
 hartrees
Energy at 0K-331.262098
Energy at 298.15K-331.268019
HF Energy-331.262098
Nuclear repulsion energy62.781414
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 B3LYP/Def2TZVPP
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 3035 2921 4.97      
2 A1 2215 2133 65.56      
3 A1 1296 1247 12.30      
4 A1 949 914 216.85      
5 A1 691 665 11.85      
6 A2 198 191 0.00      
7 E 3107 2991 8.44      
7 E 3107 2991 8.44      
8 E 2215 2132 138.25      
8 E 2215 2132 138.27      
9 E 1465 1410 2.51      
9 E 1465 1410 2.51      
10 E 963 927 43.45      
10 E 963 927 43.45      
11 E 888 855 58.86      
11 E 888 855 58.85      
12 E 523 504 9.56      
12 E 523 504 9.56      

Unscaled Zero Point Vibrational Energy (zpe) 13353.3 cm-1
Scaled (by 0.9626) Zero Point Vibrational Energy (zpe) 12853.9 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 B3LYP/Def2TZVPP
ABC
1.88029 0.36336 0.36336

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/Def2TZVPP

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.244
Si2 0.000 0.000 0.635
H3 0.000 -1.019 -1.633
H4 -0.882 0.509 -1.633
H5 0.882 0.509 -1.633
H6 0.000 1.388 1.157
H7 -1.202 -0.694 1.157
H8 1.202 -0.694 1.157

Atom - Atom Distances (Å)
  C1 Si2 H3 H4 H5 H6 H7 H8
C11.87871.09081.09081.09082.77342.77342.7734
Si21.87872.48642.48642.48641.48321.48321.4832
H31.09082.48641.76491.76493.68513.05563.0556
H41.09082.48641.76491.76493.05563.05563.6851
H51.09082.48641.76491.76493.05563.68513.0556
H62.77341.48323.68513.05563.05562.40442.4044
H72.77341.48323.05563.05563.68512.40442.4044
H82.77341.48323.05563.68513.05562.40442.4044

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 110.618 C1 Si2 H7 110.618
C1 Si2 H8 110.618 Si2 C1 H3 110.913
Si2 C1 H4 110.913 Si2 C1 H5 110.913
H3 C1 H4 107.992 H3 C1 H5 107.992
H4 C1 H5 107.992 H6 Si2 H7 108.300
H6 Si2 H8 108.300 H7 Si2 H8 108.300
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.387      
2 Si 0.298      
3 H 0.104      
4 H 0.104      
5 H 0.104      
6 H -0.074      
7 H -0.074      
8 H -0.074      


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 -0.772 0.772
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.199 0.000 0.000
y 0.000 -23.199 0.000
z 0.000 0.000 -23.474
Traceless
 xyz
x 0.137 0.000 0.000
y 0.000 0.137 0.000
z 0.000 0.000 -0.275
Polar
3z2-r2-0.550
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 5.797 0.000 0.000
y 0.000 5.797 0.000
z 0.000 0.000 6.752


<r2> (average value of r2) Å2
<r2> 50.386
(<r2>)1/2 7.098