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All results from a given calculation for SiH2 (silicon dihydride)

using model chemistry: PBE1PBE/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
2 1 yes C2V 3B1

State 1 (1A1)

Jump to S2C1
Energy calculated at PBE1PBE/TZVP
 hartrees
Energy at 0K-290.481776
Energy at 298.15K-290.482397
HF Energy-290.481776
Nuclear repulsion energy9.908972
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 PBE1PBE/TZVP
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 2051 1968 249.30      
2 A1 1012 971 89.35      
3 B2 2054 1971 286.08      

Unscaled Zero Point Vibrational Energy (zpe) 2558.3 cm-1
Scaled (by 0.9596) Zero Point Vibrational Energy (zpe) 2455.0 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 PBE1PBE/TZVP
ABC
7.80166 6.97039 3.68132

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/TZVP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.134
H2 0.000 1.095 -0.938
H3 0.000 -1.095 -0.938

Atom - Atom Distances (Å)
  Si1 H2 H3
Si11.53271.5327
H21.53272.1907
H31.53272.1907

picture of silicon dihydride state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 Si1 H3 91.234
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.194      
2 H -0.097      
3 H -0.097      


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 -0.263 0.263
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -12.193 0.000 0.000
y 0.000 -16.206 0.000
z 0.000 0.000 -18.196
Traceless
 xyz
x 5.008 0.000 0.000
y 0.000 -1.012 0.000
z 0.000 0.000 -3.996
Polar
3z2-r2-7.993
x2-y24.013
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.128 0.000 0.000
y 0.000 4.997 0.000
z 0.000 0.000 4.578


<r2> (average value of r2) Å2
<r2> 14.111
(<r2>)1/2 3.757

State 2 (3B1)

Jump to S1C1
Energy calculated at PBE1PBE/TZVP
 hartrees
Energy at 0K-290.458380
Energy at 298.15K-290.458973
HF Energy-290.458380
Nuclear repulsion energy10.140145
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 PBE1PBE/TZVP
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 2171 2084 12.09      
2 A1 876 840 67.26      
3 B2 2241 2151 73.02      

Unscaled Zero Point Vibrational Energy (zpe) 2644.2 cm-1
Scaled (by 0.9596) Zero Point Vibrational Energy (zpe) 2537.4 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 PBE1PBE/TZVP
ABC
15.61039 5.06792 3.82586

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/TZVP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.095
H2 0.000 1.285 -0.663
H3 0.000 -1.285 -0.663

Atom - Atom Distances (Å)
  Si1 H2 H3
Si11.49151.4915
H21.49152.5692
H31.49152.5692

picture of silicon dihydride state 2 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.053      
2 H -0.026      
3 H -0.026      


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 0.074 0.074
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.522 0.000 0.000
y 0.000 -14.806 0.000
z 0.000 0.000 -14.875
Traceless
 xyz
x -1.681 0.000 0.000
y 0.000 0.892 0.000
z 0.000 0.000 0.789
Polar
3z2-r21.578
x2-y2-1.716
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.924 0.000 0.000
y 0.000 4.535 0.000
z 0.000 0.000 2.999


<r2> (average value of r2) Å2
<r2> 13.925
(<r2>)1/2 3.732