return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: HF/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3 1A1
Energy calculated at HF/6-311+G(3df,2p)
 hartrees
Energy at 0K-330.319918
Energy at 298.15K-330.314683
Nuclear repulsion energy62.951131
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 HF/6-311+G(3df,2p)
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 3151 2863 8.23      
2 A1 2312 2101 81.99      
3 A1 1410 1281 16.10      
4 A1 1032 938 268.00      
5 A1 726 659 12.05      
6 A2 210 191 0.00      
7 E 3220 2926 17.46      
7 E 3220 2926 17.46      
8 E 2295 2085 187.54      
8 E 2295 2085 187.54      
9 E 1576 1432 2.10      
9 E 1576 1432 2.10      
10 E 1037 942 66.71      
10 E 1037 942 66.71      
11 E 951 864 62.76      
11 E 951 864 62.76      
12 E 557 506 13.45      
12 E 557 506 13.45      

Unscaled Zero Point Vibrational Energy (zpe) 14055.3 cm-1
Scaled (by 0.9086) Zero Point Vibrational Energy (zpe) 12770.6 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 HF/6-311+G(3df,2p)
See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-311+G(3df,2p)

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 -1.013 -1.629
H4 -0.877 0.507 -1.629
H5 0.877 0.507 -1.629
H6 0.000 1.384 1.154
H7 -1.199 -0.692 1.154
H8 1.199 -0.692 1.154

Atom - Atom Distances (Å)
  C1 Si2 H3 H4 H5 H6 H7 H8
C11.87651.08441.08441.08442.76722.76722.7672
Si21.87652.47942.47942.47941.47851.47851.4785
H31.08442.47941.75501.75503.67293.04683.0468
H41.08442.47941.75501.75503.04683.04683.6729
H51.08442.47941.75501.75503.04683.67293.0468
H62.76721.47853.67293.04683.04682.39752.3975
H72.76721.47853.04683.04683.67292.39752.3975
H82.76721.47853.04683.67293.04682.39752.3975

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 110.576 C1 Si2 H7 110.576
C1 Si2 H8 110.576 Si2 C1 H3 110.876
Si2 C1 H4 110.876 Si2 C1 H5 110.876
H3 C1 H4 108.030 H3 C1 H5 108.030
H4 C1 H5 108.030 H6 Si2 H7 108.344
H6 Si2 H8 108.344 H7 Si2 H8 108.344
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.627      
2 Si 0.585      
3 H 0.122      
4 H 0.122      
5 H 0.122      
6 H -0.108      
7 H -0.108      
8 H -0.108      


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 -0.722 0.722
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.258 0.000 0.000
y 0.000 -23.258 0.000
z 0.000 0.000 -23.597
Traceless
 xyz
x 0.170 0.000 0.000
y 0.000 0.170 0.000
z 0.000 0.000 -0.340
Polar
3z2-r2-0.679
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 5.547 0.000 0.000
y 0.000 5.547 0.000
z 0.000 0.000 6.411


<r2> (average value of r2) Å2
<r2> 50.268
(<r2>)1/2 7.090