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: BLYP/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 BLYP/cc-pVDZ
 hartrees
Energy at 0K-331.151134
Energy at 298.15K-331.156966
Nuclear repulsion energy61.813756
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/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 2959 2964 8.10      
2 A1 2129 2133 63.06      
3 A1 1234 1236 3.35      
4 A1 908 909 190.84      
5 A1 660 661 10.50      
6 A2 197 198 0.00      
7 E 3038 3043 9.19      
7 E 3038 3043 9.19      
8 E 2137 2140 131.47      
8 E 2137 2140 131.49      
9 E 1401 1403 1.58      
9 E 1401 1403 1.58      
10 E 928 930 31.28      
10 E 928 930 31.28      
11 E 858 860 58.19      
11 E 858 860 58.19      
12 E 506 507 7.11      
12 E 506 507 7.11      

Unscaled Zero Point Vibrational Energy (zpe) 12910.7 cm-1
Scaled (by 1.0016) Zero Point Vibrational Energy (zpe) 12931.3 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/cc-pVDZ
ABC
1.81971 0.35257 0.35257

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.263
Si2 0.000 0.000 0.644
H3 0.000 -1.037 -1.657
H4 -0.898 0.518 -1.657
H5 0.898 0.518 -1.657
H6 0.000 1.410 1.175
H7 -1.221 -0.705 1.175
H8 1.221 -0.705 1.175

Atom - Atom Distances (Å)
  C1 Si2 H3 H4 H5 H6 H7 H8
C11.90711.10921.10921.10922.81642.81642.8164
Si21.90712.52412.52412.52411.50691.50691.5069
H31.10922.52411.79571.79573.74293.10203.1020
H41.10922.52411.79571.79573.10203.10203.7429
H51.10922.52411.79571.79573.10203.74293.1020
H62.81641.50693.74293.10203.10202.44282.4428
H72.81641.50693.10203.10203.74292.44282.4428
H82.81641.50693.10203.74293.10202.44282.4428

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 110.622 C1 Si2 H7 110.622
C1 Si2 H8 110.622 Si2 C1 H3 110.823
Si2 C1 H4 110.823 Si2 C1 H5 110.823
H3 C1 H4 108.086 H3 C1 H5 108.086
H4 C1 H5 108.086 H6 Si2 H7 108.297
H6 Si2 H8 108.297 H7 Si2 H8 108.297
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.123      
2 Si 0.234      
3 H 0.031      
4 H 0.031      
5 H 0.031      
6 H -0.068      
7 H -0.068      
8 H -0.068      


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 -0.797 0.797
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.098 0.000 0.000
y 0.000 -23.098 0.000
z 0.000 0.000 -23.240
Traceless
 xyz
x 0.071 0.000 0.000
y 0.000 0.071 0.000
z 0.000 0.000 -0.142
Polar
3z2-r2-0.284
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 5.468 0.000 0.000
y 0.000 5.468 0.000
z 0.000 0.000 6.299


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000