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

using model chemistry: HF/STO-3G

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 HF/STO-3G
 hartrees
Energy at 0K-481.687279
Energy at 298.15K 
HF Energy-481.687279
Nuclear repulsion energy101.619530
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 HF/STO-3G
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 1005 820 39.02 6.12 0.08 0.14
2 A1 441 360 18.09 0.85 0.75 0.85
3 B2 975 796 81.69 2.57 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 1210.2 cm-1
Scaled (by 0.8165) Zero Point Vibrational Energy (zpe) 988.1 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 HF/STO-3G
ABC
0.86361 0.32708 0.23723

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/STO-3G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.619
F2 0.000 1.165 -0.482
F3 0.000 -1.165 -0.482

Atom - Atom Distances (Å)
  Si1 F2 F3
Si11.60251.6025
F21.60252.3293
F31.60252.3293

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 93.236
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.717      
2 F -0.358      
3 F -0.358      


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 1.265 1.265
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -15.530 0.000 0.000
y 0.000 -21.321 0.000
z 0.000 0.000 -20.325
Traceless
 xyz
x 5.293 0.000 0.000
y 0.000 -3.393 0.000
z 0.000 0.000 -1.899
Polar
3z2-r2-3.799
x2-y25.791
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.454 0.000 0.000
y 0.000 1.874 0.000
z 0.000 0.000 1.141


<r2> (average value of r2) Å2
<r2> 45.859
(<r2>)1/2 6.772

State 2 (3B1)

Jump to S1C1
Energy calculated at HF/STO-3G
 hartrees
Energy at 0K-481.586623
Energy at 298.15K-481.466823
HF Energy-481.586623
Nuclear repulsion energy97.046675
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 HF/STO-3G
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 876 715 7.39      
2 A1 296 241 17.00      
3 B2 951 776 23.82      

Unscaled Zero Point Vibrational Energy (zpe) 1061.3 cm-1
Scaled (by 0.8165) Zero Point Vibrational Energy (zpe) 866.5 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 HF/STO-3G
ABC
1.16819 0.24543 0.20282

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/STO-3G

Point Group is C2v

Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.582      
2 F -0.291      
3 F -0.291      


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 2.044 2.044
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.460 0.000 0.000
y 0.000 -21.808 0.000
z 0.000 0.000 -16.720
Traceless
 xyz
x 1.804 0.000 0.000
y 0.000 -4.718 0.000
z 0.000 0.000 2.914
Polar
3z2-r25.829
x2-y24.348
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.625 0.000 0.000
y 0.000 1.826 0.000
z 0.000 0.000 1.521


<r2> (average value of r2) Å2
<r2> 51.248
(<r2>)1/2 7.159