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

using model chemistry: B3PW91/TZVP

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 B3PW91/TZVP
 hartrees
Energy at 0K-489.237445
Energy at 298.15K 
HF Energy-489.237445
Nuclear repulsion energy98.958086
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 B3PW91/TZVP
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 824 794 145.43 4.52 0.58 0.74
2 A1 329 317 17.78 0.87 0.44 0.61
3 B2 828 799 185.21 6.50 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 990.1 cm-1
Scaled (by 0.9643) Zero Point Vibrational Energy (zpe) 954.8 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 B3PW91/TZVP
ABC
0.95077 0.28476 0.21913

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/TZVP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.590
F2 0.000 1.248 -0.459
F3 0.000 -1.248 -0.459

Atom - Atom Distances (Å)
  Si1 F2 F3
Si11.63051.6305
F21.63052.4964
F31.63052.4964

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 99.913
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.621      
2 F -0.311      
3 F -0.311      


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 1.463 1.463
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.644 0.000 0.000
y 0.000 -25.334 0.000
z 0.000 0.000 -23.314
Traceless
 xyz
x 4.680 0.000 0.000
y 0.000 -3.856 0.000
z 0.000 0.000 -0.825
Polar
3z2-r2-1.649
x2-y25.691
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.607 0.000 0.000
y 0.000 4.048 0.000
z 0.000 0.000 3.434


<r2> (average value of r2) Å2
<r2> 50.928
(<r2>)1/2 7.136

State 2 (3B1)

Jump to S1C1
Energy calculated at B3PW91/TZVP
 hartrees
Energy at 0K-489.126934
Energy at 298.15K-489.007121
HF Energy-489.126934
Nuclear repulsion energy97.577057
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 B3PW91/TZVP
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 785 757 68.60      
2 A1 247 238 16.94      
3 B2 903 871 165.25      

Unscaled Zero Point Vibrational Energy (zpe) 967.6 cm-1
Scaled (by 0.9643) Zero Point Vibrational Energy (zpe) 933.1 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 B3PW91/TZVP
ABC
1.36069 0.23606 0.20116

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/TZVP

Point Group is C2v

Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.563      
2 F -0.281      
3 F -0.281      


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 1.749 1.749
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.983 0.000 0.000
y 0.000 -25.545 0.000
z 0.000 0.000 -20.584
Traceless
 xyz
x 0.082 0.000 0.000
y 0.000 -3.762 0.000
z 0.000 0.000 3.680
Polar
3z2-r27.360
x2-y22.563
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.056 0.000 0.000
y 0.000 3.555 0.000
z 0.000 0.000 2.835


<r2> (average value of r2) Å2
<r2> 54.273
(<r2>)1/2 7.367