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

using model chemistry: mPW1PW91/cc-pVDZ

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/cc-pVDZ
 hartrees
Energy at 0K-489.216361
Energy at 298.15K 
HF Energy-489.216361
Nuclear repulsion energy97.763468
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/cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 843 808 111.45 4.56 0.45 0.62
2 A1 319 306 17.12 0.59 0.49 0.66
3 B2 862 826 132.46 5.32 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 1012.2 cm-1
Scaled (by 0.9583) Zero Point Vibrational Energy (zpe) 970.0 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 mPW1PW91/cc-pVDZ
ABC
0.92474 0.27843 0.21400

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.598
F2 0.000 1.262 -0.465
F3 0.000 -1.262 -0.465

Atom - Atom Distances (Å)
  Si1 F2 F3
Si11.65071.6507
F21.65072.5246
F31.65072.5246

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 99.764
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.654      
2 F -0.327      
3 F -0.327      


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 1.450 1.450
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.454 0.000 0.000
y 0.000 -24.875 0.000
z 0.000 0.000 -22.864
Traceless
 xyz
x 4.415 0.000 0.000
y 0.000 -3.716 0.000
z 0.000 0.000 -0.699
Polar
3z2-r2-1.397
x2-y25.421
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.406 0.000 0.000
y 0.000 3.698 0.000
z 0.000 0.000 3.107


<r2> (average value of r2) Å2
<r2> 51.581
(<r2>)1/2 7.182

State 2 (3B1)

Jump to S1C1
Energy calculated at mPW1PW91/cc-pVDZ
 hartrees
Energy at 0K-489.106464
Energy at 298.15K-488.986655
HF Energy-489.106464
Nuclear repulsion energy96.211196
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/cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 795 762 48.67      
2 A1 244 234 16.78      
3 B2 923 884 110.15      

Unscaled Zero Point Vibrational Energy (zpe) 981.1 cm-1
Scaled (by 0.9583) Zero Point Vibrational Energy (zpe) 940.2 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/cc-pVDZ
ABC
1.33207 0.22899 0.19540

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

Point Group is C2v

Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.605      
2 F -0.302      
3 F -0.302      


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 1.703 1.703
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.559 0.000 0.000
y 0.000 -25.119 0.000
z 0.000 0.000 -20.252
Traceless
 xyz
x 0.127 0.000 0.000
y 0.000 -3.714 0.000
z 0.000 0.000 3.587
Polar
3z2-r27.173
x2-y22.560
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.713 0.000 0.000
y 0.000 3.399 0.000
z 0.000 0.000 2.776


<r2> (average value of r2) Å2
<r2> 55.202
(<r2>)1/2 7.430