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All results from a given calculation for SiF2 (Silicon difluoride)

using model chemistry: B3LYP/Def2TZVPP

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 B3LYP/Def2TZVPP
 hartrees
Energy at 0K-489.397252
Energy at 298.15K 
HF Energy-489.397252
Nuclear repulsion energy100.160717
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 837 806 130.70 3.77 0.61 0.76
2 A1 334 322 16.88 0.62 0.30 0.46
3 B2 851 819 173.50 5.01 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 1011.3 cm-1
Scaled (by 0.9626) Zero Point Vibrational Energy (zpe) 973.5 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
0.99510 0.28853 0.22368

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.577
F2 0.000 1.240 -0.449
F3 0.000 -1.240 -0.449

Atom - Atom Distances (Å)
  Si1 F2 F3
Si11.60901.6090
F21.60902.4800
F31.60902.4800

picture of Silicon difluoride state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
F2 Si1 F3 100.826
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.559      
2 F -0.280      
3 F -0.280      


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 1.208 1.208
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.810 0.000 0.000
y 0.000 -24.935 0.000
z 0.000 0.000 -23.324
Traceless
 xyz
x 4.320 0.000 0.000
y 0.000 -3.369 0.000
z 0.000 0.000 -0.951
Polar
3z2-r2-1.902
x2-y25.125
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.927 0.000 0.000
y 0.000 4.109 0.000
z 0.000 0.000 3.649


<r2> (average value of r2) Å2
<r2> 50.129
(<r2>)1/2 7.080

State 2 (3B1)

Jump to S1C1
Energy calculated at B3LYP/Def2TZVPP
 hartrees
Energy at 0K-489.280315
Energy at 298.15K-489.160530
HF Energy-489.280315
Nuclear repulsion energy98.953134
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 807 777 66.95      
2 A1 261 251 12.71      
3 B2 922 888 151.55      

Unscaled Zero Point Vibrational Energy (zpe) 995.1 cm-1
Scaled (by 0.9626) Zero Point Vibrational Energy (zpe) 957.9 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
1.36825 0.24456 0.20747

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.492
F2 0.000 1.345 -0.382
F3 0.000 -1.345 -0.382

Atom - Atom Distances (Å)
  Si1 F2 F3
Si11.60381.6038
F21.60382.6897
F31.60382.6897

picture of Silicon difluoride state 2 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
F2 Si1 F3 113.972
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.530      
2 F -0.265      
3 F -0.265      


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 1.350 1.350
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.224 0.000 0.000
y 0.000 -24.904 0.000
z 0.000 0.000 -20.945
Traceless
 xyz
x -0.299 0.000 0.000
y 0.000 -2.820 0.000
z 0.000 0.000 3.119
Polar
3z2-r26.237
x2-y21.681
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.791 0.000 0.000
y 0.000 3.942 0.000
z 0.000 0.000 3.501


<r2> (average value of r2) Å2
<r2> 53.057
(<r2>)1/2 7.284