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

using model chemistry: B2PLYP=FULLultrafine/daug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B2PLYP=FULLultrafine/daug-cc-pVDZ
 hartrees
Energy at 0K-489.049021
Energy at 298.15K 
HF Energy-488.880887
Nuclear repulsion energy97.644081
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 B2PLYP=FULLultrafine/daug-cc-pVDZ
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 803 803 135.21 6.20 0.36 0.53
2 A1 309 309 15.31 0.81 0.18 0.30
3 B2 807 807 180.24 6.75 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 959.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 959.5 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 B2PLYP=FULLultrafine/daug-cc-pVDZ
ABC
0.91319 0.27923 0.21384

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/daug-cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.602
F2 0.000 1.261 -0.468
F3 0.000 -1.261 -0.468

Atom - Atom Distances (Å)
  Si1 F2 F3
Si11.65361.6536
F21.65362.5210
F31.65362.5210

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 99.327
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP=FULLultrafine/daug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.995      
2 F -0.498      
3 F -0.498      


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 1.642 1.642
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.172 0.000 0.000
y 0.000 -25.822 0.000
z 0.000 0.000 -23.664
Traceless
 xyz
x 4.571 0.000 0.000
y 0.000 -3.904 0.000
z 0.000 0.000 -0.667
Polar
3z2-r2-1.334
x2-y25.649
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.274 0.000 0.000
y 0.000 4.612 0.000
z 0.000 0.000 4.216


<r2> (average value of r2) Å2
<r2> 52.128
(<r2>)1/2 7.220