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

using model chemistry: M06-2X/6-31G*

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 M06-2X/6-31G*
 hartrees
Energy at 0K-489.152032
Energy at 298.15K 
HF Energy-489.152032
Nuclear repulsion energy100.374722
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 M06-2X/6-31G*
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 901 853 123.56 3.00 0.68 0.81
2 A1 341 323 20.50 0.78 0.35 0.52
3 B2 925 876 148.28 4.39 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 1083.1 cm-1
Scaled (by 0.947) Zero Point Vibrational Energy (zpe) 1025.7 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 M06-2X/6-31G*
ABC
0.98045 0.29262 0.22536

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.581
F2 0.000 1.231 -0.452
F3 0.000 -1.231 -0.452

Atom - Atom Distances (Å)
  Si1 F2 F3
Si11.60731.6073
F21.60732.4627
F31.60732.4627

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 100.012
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at M06-2X/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.779      
2 F -0.390      
3 F -0.390      


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 1.103 1.103
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.160 0.000 0.000
y 0.000 -24.485 0.000
z 0.000 0.000 -23.025
Traceless
 xyz
x 4.595 0.000 0.000
y 0.000 -3.392 0.000
z 0.000 0.000 -1.203
Polar
3z2-r2-2.406
x2-y25.324
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.483 0.000 0.000
y 0.000 3.767 0.000
z 0.000 0.000 3.008


<r2> (average value of r2) Å2
<r2> 49.575
(<r2>)1/2 7.041

State 2 (3B1)

Jump to S1C1
Energy calculated at M06-2X/6-31G*
 hartrees
Energy at 0K-489.036465
Energy at 298.15K-488.916703
HF Energy-489.036465
Nuclear repulsion energy98.520336
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 M06-2X/6-31G*
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 850 805 57.96      
2 A1 263 249 18.36      
3 B2 986 934 127.92      

Unscaled Zero Point Vibrational Energy (zpe) 1049.5 cm-1
Scaled (by 0.947) Zero Point Vibrational Energy (zpe) 993.8 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 M06-2X/6-31G*
ABC
1.42535 0.23858 0.20437

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/6-31G*

Point Group is C2v

Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at M06-2X/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.722      
2 F -0.361      
3 F -0.361      


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 1.680 1.680
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.406 0.000 0.000
y 0.000 -24.767 0.000
z 0.000 0.000 -20.028
Traceless
 xyz
x -0.009 0.000 0.000
y 0.000 -3.550 0.000
z 0.000 0.000 3.559
Polar
3z2-r27.118
x2-y22.361
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.808 0.000 0.000
y 0.000 3.079 0.000
z 0.000 0.000 2.326


<r2> (average value of r2) Å2
<r2> 53.243
(<r2>)1/2 7.297