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

using model chemistry: LSDA/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 LSDA/6-31+G**
 hartrees
Energy at 0K-487.495388
Energy at 298.15K-487.375649
HF Energy-487.495388
Nuclear repulsion energy99.171186
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 LSDA/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 829 817 133.28      
2 A1 309 305 16.25      
3 B2 846 833 178.14      

Unscaled Zero Point Vibrational Energy (zpe) 992.2 cm-1
Scaled (by 0.985) Zero Point Vibrational Energy (zpe) 977.3 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 LSDA/6-31+G**
ABC
0.95351 0.28620 0.22013

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.589
F2 0.000 1.245 -0.458
F3 0.000 -1.245 -0.458

Atom - Atom Distances (Å)
  Si1 F2 F3
Si11.62711.6271
F21.62712.4901
F31.62712.4901

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 99.852
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.500      
2 F -0.250      
3 F -0.250      


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 1.440 1.440
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.195 0.000 0.000
y 0.000 -25.297 0.000
z 0.000 0.000 -23.417
Traceless
 xyz
x 4.162 0.000 0.000
y 0.000 -3.491 0.000
z 0.000 0.000 -0.671
Polar
3z2-r2-1.342
x2-y25.102
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.937 0.000 0.000
y 0.000 4.481 0.000
z 0.000 0.000 3.955


<r2> (average value of r2) Å2
<r2> 50.891
(<r2>)1/2 7.134

State 2 (3B1)

Jump to S1C1
Energy calculated at LSDA/6-31+G**
 hartrees
Energy at 0K-487.373658
Energy at 298.15K-487.253841
HF Energy-487.373658
Nuclear repulsion energy97.910985
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 LSDA/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 793 781 66.62      
2 A1 243 239 13.19      
3 B2 916 902 158.13      

Unscaled Zero Point Vibrational Energy (zpe) 975.7 cm-1
Scaled (by 0.985) Zero Point Vibrational Energy (zpe) 961.0 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 LSDA/6-31+G**
ABC
1.34314 0.23922 0.20306

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

Point Group is C2v

Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.450      
2 F -0.225      
3 F -0.225      


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 1.511 1.511
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.746 0.000 0.000
y 0.000 -25.252 0.000
z 0.000 0.000 -21.082
Traceless
 xyz
x -0.579 0.000 0.000
y 0.000 -2.838 0.000
z 0.000 0.000 3.417
Polar
3z2-r26.834
x2-y21.506
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.752 0.000 0.000
y 0.000 3.946 0.000
z 0.000 0.000 3.390


<r2> (average value of r2) Å2
<r2> 54.107
(<r2>)1/2 7.356