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

using model chemistry: ROHF/aug-cc-pVTZ

19 10 17 12 22

States and conformations

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

State 1 (1A1)

Jump to S2C1
Vibrational Frequencies calculated at ROHF/aug-cc-pVTZ
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 2152 2152 269.12      
2 A1 1101 1101 113.80      
3 B2 2142 2142 348.82      

Unscaled Zero Point Vibrational Energy (zpe) 2697.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 2697.4 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 ROHF/aug-cc-pVTZ
ABC
8.36949 6.86368 3.77108

See section I.F.4 to change rotational constant units
Geometric Data calculated at ROHF/aug-cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.129
H2 0.000 1.104 -0.906
H3 0.000 -1.104 -0.906

Atom - Atom Distances (Å)
  Si1 H2 H3
Si11.51321.5132
H21.51322.2077
H31.51322.2077

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 93.687
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at ROHF/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.247      
2 H -0.124      
3 H -0.124      


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 -0.360 0.360
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -12.389 0.000 0.000
y 0.000 -16.302 0.000
z 0.000 0.000 -18.790
Traceless
 xyz
x 5.157 0.000 0.000
y 0.000 -0.712 0.000
z 0.000 0.000 -4.445
Polar
3z2-r2-8.890
x2-y23.912
xy0.000
xz0.000
yz0.000


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


<r2> (average value of r2) Å2
<r2> 14.197
(<r2>)1/2 3.768

State 2 (3B1)

Jump to S1C1
Energy calculated at ROHF/aug-cc-pVTZ
 hartrees
Energy at 0K-290.024092
Energy at 298.15K-290.024704
HF Energy-290.024092
Nuclear repulsion energy10.259295
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 ROHF/aug-cc-pVTZ
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 2301 2301 29.07      
2 A1 953 953 82.30      
3 B2 2345 2345 108.93      

Unscaled Zero Point Vibrational Energy (zpe) 2799.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 2799.6 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 ROHF/aug-cc-pVTZ
ABC
15.49609 5.24308 3.91757

See section I.F.4 to change rotational constant units
Geometric Data calculated at ROHF/aug-cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.095
H2 0.000 1.263 -0.666
H3 0.000 -1.263 -0.666

Atom - Atom Distances (Å)
  Si1 H2 H3
Si11.47441.4744
H21.47442.5260
H31.47442.5260

picture of silicon dihydride state 2 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at ROHF/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.184      
2 H -0.092      
3 H -0.092      


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 0.068 0.068
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.691 0.000 0.000
y 0.000 -15.181 0.000
z 0.000 0.000 -15.122
Traceless
 xyz
x -1.539 0.000 0.000
y 0.000 0.726 0.000
z 0.000 0.000 0.813
Polar
3z2-r21.626
x2-y2-1.510
xy0.000
xz0.000
yz0.000


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


<r2> (average value of r2) Å2
<r2> 13.987
(<r2>)1/2 3.740