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

using model chemistry: B3LYP/cc-pVQZ

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/cc-pVQZ
 hartrees
Energy at 0K-489.410511
Energy at 298.15K 
HF Energy-489.410511
Nuclear repulsion energy100.138060
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/cc-pVQZ
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 835 809 127.91 3.84 0.65 0.78
2 A1 335 324 16.84 0.69 0.17 0.29
3 B2 848 821 167.98 5.18 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 1008.9 cm-1
Scaled (by 0.9688) Zero Point Vibrational Energy (zpe) 977.4 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 B3LYP/cc-pVQZ
ABC
0.99149 0.28887 0.22370

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.578
F2 0.000 1.239 -0.449
F3 0.000 -1.239 -0.449

Atom - Atom Distances (Å)
  Si1 F2 F3
Si11.60971.6097
F21.60972.4786
F31.60972.4786

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 100.691
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/cc-pVQZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.713      
2 F -0.357      
3 F -0.357      


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 1.214 1.214
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.917 0.000 0.000
y 0.000 -24.972 0.000
z 0.000 0.000 -23.442
Traceless
 xyz
x 4.290 0.000 0.000
y 0.000 -3.292 0.000
z 0.000 0.000 -0.998
Polar
3z2-r2-1.995
x2-y25.055
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.170 0.000 0.000
y 0.000 4.243 0.000
z 0.000 0.000 3.866


<r2> (average value of r2) Å2
<r2> 50.181
(<r2>)1/2 7.084

State 2 (3B1)

Jump to S1C1
Energy calculated at B3LYP/cc-pVQZ
 hartrees
Energy at 0K-489.293656
Energy at 298.15K-489.173873
HF Energy-489.293656
Nuclear repulsion energy98.954663
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/cc-pVQZ
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 807 782 68.82      
2 A1 261 253 12.24      
3 B2 919 891 146.93      

Unscaled Zero Point Vibrational Energy (zpe) 993.7 cm-1
Scaled (by 0.9688) Zero Point Vibrational Energy (zpe) 962.7 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/cc-pVQZ
ABC
1.35762 0.24520 0.20769

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

Point Group is C2v

Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/cc-pVQZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.672      
2 F -0.336      
3 F -0.336      


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 1.295 1.295
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.288 0.000 0.000
y 0.000 -24.941 0.000
z 0.000 0.000 -21.116
Traceless
 xyz
x -0.260 0.000 0.000
y 0.000 -2.739 0.000
z 0.000 0.000 2.999
Polar
3z2-r25.997
x2-y21.653
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.603 0.000 0.000
y 0.000 4.209 0.000
z 0.000 0.000 3.874


<r2> (average value of r2) Å2
<r2> 53.074
(<r2>)1/2 7.285