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

using model chemistry: BLYP/6-31+G**

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 BLYP/6-31+G**
 hartrees
Energy at 0K-489.258084
Energy at 298.15K 
HF Energy-489.258084
Nuclear repulsion energy97.308097
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 BLYP/6-31+G**
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 773 769 133.33 6.05 0.57 0.73
2 A1 300 299 15.34 0.83 0.32 0.48
3 B2 787 783 184.70 9.63 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 930.2 cm-1
Scaled (by 0.9947) Zero Point Vibrational Energy (zpe) 925.3 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 BLYP/6-31+G**
ABC
0.94128 0.27203 0.21104

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.593
F2 0.000 1.277 -0.461
F3 0.000 -1.277 -0.461

Atom - Atom Distances (Å)
  Si1 F2 F3
Si11.65601.6560
F21.65602.5541
F31.65602.5541

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 100.918
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.553      
2 F -0.277      
3 F -0.277      


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 1.599 1.599
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.275 0.000 0.000
y 0.000 -25.965 0.000
z 0.000 0.000 -23.597
Traceless
 xyz
x 4.506 0.000 0.000
y 0.000 -4.029 0.000
z 0.000 0.000 -0.477
Polar
3z2-r2-0.954
x2-y25.690
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.970 0.000 0.000
y 0.000 4.631 0.000
z 0.000 0.000 4.081


<r2> (average value of r2) Å2
<r2> 52.649
(<r2>)1/2 7.256

State 2 (3B1)

Jump to S1C1
Energy calculated at BLYP/6-31+G**
 hartrees
Energy at 0K-489.138992
Energy at 298.15K-489.019124
HF Energy-489.138992
Nuclear repulsion energy96.021417
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 BLYP/6-31+G**
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 733 729 60.66      
2 A1 235 234 12.64      
3 B2 851 847 154.06      

Unscaled Zero Point Vibrational Energy (zpe) 909.6 cm-1
Scaled (by 0.9947) Zero Point Vibrational Energy (zpe) 904.8 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 BLYP/6-31+G**
ABC
1.33253 0.22777 0.19452

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

Point Group is C2v

Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.492      
2 F -0.246      
3 F -0.246      


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 1.606 1.606
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.858 0.000 0.000
y 0.000 -25.861 0.000
z 0.000 0.000 -21.123
Traceless
 xyz
x -0.366 0.000 0.000
y 0.000 -3.370 0.000
z 0.000 0.000 3.736
Polar
3z2-r27.473
x2-y22.003
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.781 0.000 0.000
y 0.000 4.147 0.000
z 0.000 0.000 3.507


<r2> (average value of r2) Å2
<r2> 55.992
(<r2>)1/2 7.483