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

using model chemistry: B3LYP/6-311G*

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/6-311G*
 hartrees
Energy at 0K-489.344637
Energy at 298.15K 
HF Energy-489.344637
Nuclear repulsion energy99.301852
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/6-311G*
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 836 808 130.88 4.19 0.62 0.76
2 A1 331 320 19.23 0.82 0.44 0.61
3 B2 851 822 158.87 5.62 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 1009.0 cm-1
Scaled (by 0.9663) Zero Point Vibrational Energy (zpe) 975.0 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/6-311G*
ABC
0.96572 0.28546 0.22033

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.585
F2 0.000 1.247 -0.455
F3 0.000 -1.247 -0.455

Atom - Atom Distances (Å)
  Si1 F2 F3
Si11.62411.6241
F21.62412.4934
F31.62412.4934

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 100.283
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.815      
2 F -0.408      
3 F -0.408      


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 1.447 1.447
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.371 0.000 0.000
y 0.000 -25.384 0.000
z 0.000 0.000 -23.160
Traceless
 xyz
x 4.901 0.000 0.000
y 0.000 -4.119 0.000
z 0.000 0.000 -0.782
Polar
3z2-r2-1.565
x2-y26.014
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.361 0.000 0.000
y 0.000 3.786 0.000
z 0.000 0.000 3.053


<r2> (average value of r2) Å2
<r2> 50.647
(<r2>)1/2 7.117

State 2 (3B1)

Jump to S1C1
Energy calculated at B3LYP/6-311G*
 hartrees
Energy at 0K-489.225232
Energy at 298.15K-489.105421
HF Energy-489.225232
Nuclear repulsion energy97.626699
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/6-311G*
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 782 756 53.24      
2 A1 252 243 17.83      
3 B2 908 877 133.45      

Unscaled Zero Point Vibrational Energy (zpe) 970.9 cm-1
Scaled (by 0.9663) Zero Point Vibrational Energy (zpe) 938.2 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/6-311G*
ABC
1.38930 0.23482 0.20087

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-311G*

Point Group is C2v

Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.756      
2 F -0.378      
3 F -0.378      


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 1.856 1.856
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.760 0.000 0.000
y 0.000 -25.681 0.000
z 0.000 0.000 -20.299
Traceless
 xyz
x 0.230 0.000 0.000
y 0.000 -4.152 0.000
z 0.000 0.000 3.922
Polar
3z2-r27.844
x2-y22.921
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.555 0.000 0.000
y 0.000 3.253 0.000
z 0.000 0.000 2.528


<r2> (average value of r2) Å2
<r2> 54.250
(<r2>)1/2 7.365