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

using model chemistry: mPW1PW91/aug-cc-pVTZ

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 mPW1PW91/aug-cc-pVTZ
 hartrees
Energy at 0K-489.321438
Energy at 298.15K 
HF Energy-489.321438
Nuclear repulsion energy100.154733
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 mPW1PW91/aug-cc-pVTZ
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 843 807 134.18 4.15 0.60 0.75
2 A1 336 322 17.39 0.81 0.13 0.24
3 B2 853 817 176.64 5.92 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 1015.6 cm-1
Scaled (by 0.9581) Zero Point Vibrational Energy (zpe) 973.1 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 mPW1PW91/aug-cc-pVTZ
ABC
0.97920 0.29087 0.22425

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/aug-cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.581
F2 0.000 1.235 -0.452
F3 0.000 -1.235 -0.452

Atom - Atom Distances (Å)
  Si1 F2 F3
Si11.61051.6105
F21.61052.4701
F31.61052.4701

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 100.145
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.840      
2 F -0.420      
3 F -0.420      


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 1.213 1.213
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.861 0.000 0.000
y 0.000 -24.964 0.000
z 0.000 0.000 -23.560
Traceless
 xyz
x 4.401 0.000 0.000
y 0.000 -3.253 0.000
z 0.000 0.000 -1.148
Polar
3z2-r2-2.295
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 4.337 0.000 0.000
y 0.000 4.447 0.000
z 0.000 0.000 4.077


<r2> (average value of r2) Å2
<r2> 50.107
(<r2>)1/2 7.079

State 2 (3B1)

Jump to S1C1
Energy calculated at mPW1PW91/aug-cc-pVTZ
 hartrees
Energy at 0K-489.214154
Energy at 298.15K-489.094377
HF Energy-489.214154
Nuclear repulsion energy98.988681
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 mPW1PW91/aug-cc-pVTZ
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 817 783 78.17      
2 A1 261 250 13.00      
3 B2 931 892 156.55      

Unscaled Zero Point Vibrational Energy (zpe) 1004.2 cm-1
Scaled (by 0.9581) Zero Point Vibrational Energy (zpe) 962.1 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 mPW1PW91/aug-cc-pVTZ
ABC
1.35309 0.24570 0.20794

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/aug-cc-pVTZ

Point Group is C2v

Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.840      
2 F -0.420      
3 F -0.420      


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 1.267 1.267
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.364 0.000 0.000
y 0.000 -24.922 0.000
z 0.000 0.000 -21.221
Traceless
 xyz
x -0.292 0.000 0.000
y 0.000 -2.630 0.000
z 0.000 0.000 2.922
Polar
3z2-r25.844
x2-y21.558
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.564 0.000 0.000
y 0.000 4.492 0.000
z 0.000 0.000 4.250


<r2> (average value of r2) Å2
<r2> 53.062
(<r2>)1/2 7.284