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

using model chemistry: B3LYPultrafine/6-31G*

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 B3LYPultrafine/6-31G*
 hartrees
Energy at 0K-489.258541
Energy at 298.15K 
HF Energy-489.258541
Nuclear repulsion energy99.714798
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 B3LYPultrafine/6-31G*
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 866 830 106.94 3.70 0.63 0.77
2 A1 327 314 16.95 0.76 0.36 0.53
3 B2 899 861 130.36 5.23 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 1046.0 cm-1
Scaled (by 0.958) Zero Point Vibrational Energy (zpe) 1002.1 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 B3LYPultrafine/6-31G*
ABC
0.99011 0.28541 0.22155

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.578
F2 0.000 1.247 -0.450
F3 0.000 -1.247 -0.450

Atom - Atom Distances (Å)
  Si1 F2 F3
Si11.61591.6159
F21.61592.4936
F31.61592.4936

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 100.991
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.731      
2 F -0.366      
3 F -0.366      


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 0.978 0.978
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.366 0.000 0.000
y 0.000 -24.437 0.000
z 0.000 0.000 -23.007
Traceless
 xyz
x 4.356 0.000 0.000
y 0.000 -3.250 0.000
z 0.000 0.000 -1.106
Polar
3z2-r2-2.212
x2-y25.070
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.525 0.000 0.000
y 0.000 3.891 0.000
z 0.000 0.000 3.132


<r2> (average value of r2) Å2
<r2> 50.211
(<r2>)1/2 7.086

State 2 (3B1)

Jump to S1C1
Energy calculated at B3LYPultrafine/6-31G*
 hartrees
Energy at 0K-489.138157
Energy at 298.15K-489.018372
HF Energy-489.138157
Nuclear repulsion energy97.905239
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 B3LYPultrafine/6-31G*
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 807 773 41.74      
2 A1 262 251 15.42      
3 B2 947 907 111.84      

Unscaled Zero Point Vibrational Energy (zpe) 1007.8 cm-1
Scaled (by 0.958) Zero Point Vibrational Energy (zpe) 965.5 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 B3LYPultrafine/6-31G*
ABC
1.43503 0.23421 0.20135

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/6-31G*

Point Group is C2v

Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.682      
2 F -0.341      
3 F -0.341      


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 1.518 1.518
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.608 0.000 0.000
y 0.000 -24.562 0.000
z 0.000 0.000 -20.085
Traceless
 xyz
x -0.284 0.000 0.000
y 0.000 -3.216 0.000
z 0.000 0.000 3.500
Polar
3z2-r27.000
x2-y21.954
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.908 0.000 0.000
y 0.000 3.273 0.000
z 0.000 0.000 2.609


<r2> (average value of r2) Å2
<r2> 53.840
(<r2>)1/2 7.338