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

using model chemistry: LSDA/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 LSDA/6-311G*
 hartrees
Energy at 0K-487.562948
Energy at 298.15K-487.443236
HF Energy-487.562948
Nuclear repulsion energy99.830894
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/6-311G*
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 848 834 114.41      
2 A1 322 317 16.71      
3 B2 867 853 139.80      

Unscaled Zero Point Vibrational Energy (zpe) 1018.5 cm-1
Scaled (by 0.9837) Zero Point Vibrational Energy (zpe) 1001.9 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/6-311G*
ABC
0.96618 0.29003 0.22307

See section I.F.4 to change rotational constant units
Geometric Data calculated at LSDA/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 1.237 -0.455
F3 0.000 -1.237 -0.455

Atom - Atom Distances (Å)
  Si1 F2 F3
Si11.61631.6163
F21.61632.4736
F31.61632.4736

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 99.849
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.707      
2 F -0.354      
3 F -0.354      


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 1.275 1.275
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.635 0.000 0.000
y 0.000 -24.929 0.000
z 0.000 0.000 -23.015
Traceless
 xyz
x 4.337 0.000 0.000
y 0.000 -3.604 0.000
z 0.000 0.000 -0.732
Polar
3z2-r2-1.465
x2-y25.294
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.376 0.000 0.000
y 0.000 3.876 0.000
z 0.000 0.000 3.187


<r2> (average value of r2) Å2
<r2> 50.132
(<r2>)1/2 7.080

State 2 (3B1)

Jump to S1C1
Energy calculated at LSDA/6-311G*
 hartrees
Energy at 0K-487.439548
Energy at 298.15K-487.319737
HF Energy-487.439548
Nuclear repulsion energy98.187027
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/6-311G*
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 794 781 46.39      
2 A1 246 242 15.09      
3 B2 924 909 119.97      

Unscaled Zero Point Vibrational Energy (zpe) 982.1 cm-1
Scaled (by 0.9837) Zero Point Vibrational Energy (zpe) 966.1 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 LSDA/6-311G*
ABC
1.38828 0.23844 0.20349

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

Point Group is C2v

Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.659      
2 F -0.330      
3 F -0.330      


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 -23.016 0.000 0.000
y 0.000 -25.131 0.000
z 0.000 0.000 -20.460
Traceless
 xyz
x -0.221 0.000 0.000
y 0.000 -3.392 0.000
z 0.000 0.000 3.614
Polar
3z2-r27.227
x2-y22.114
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.653 0.000 0.000
y 0.000 3.357 0.000
z 0.000 0.000 2.642


<r2> (average value of r2) Å2
<r2> 53.711
(<r2>)1/2 7.329