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

using model chemistry: B2PLYP=FULLultrafine/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 no C2V 3B1

State 1 (1A1)

Jump to S2C1
Energy calculated at B2PLYP=FULLultrafine/aug-cc-pVTZ
 hartrees
Energy at 0K-489.182649
Energy at 298.15K 
HF Energy-488.957213
Nuclear repulsion energy99.909891
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 B2PLYP=FULLultrafine/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 835 801 133.00 4.65 0.54 0.70
2 A1 335 321 17.63 0.85 0.13 0.24
3 B2 845 811 177.29 6.25 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 1007.4 cm-1
Scaled (by 0.9591) Zero Point Vibrational Energy (zpe) 966.2 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 B2PLYP=FULLultrafine/aug-cc-pVTZ
ABC
0.97453 0.28943 0.22315

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/aug-cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.583
F2 0.000 1.238 -0.453
F3 0.000 -1.238 -0.453

Atom - Atom Distances (Å)
  Si1 F2 F3
Si11.61441.6144
F21.61442.4762
F31.61442.4762

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 100.150
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP=FULLultrafine/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.869      
2 F -0.434      
3 F -0.434      


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 1.292 1.292
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.056 0.000 0.000
y 0.000 -25.301 0.000
z 0.000 0.000 -23.735
Traceless
 xyz
x 4.462 0.000 0.000
y 0.000 -3.405 0.000
z 0.000 0.000 -1.057
Polar
3z2-r2-2.114
x2-y25.245
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.341 0.000 0.000
y 0.000 4.487 0.000
z 0.000 0.000 4.110


<r2> (average value of r2) Å2
<r2> 50.434
(<r2>)1/2 7.102

State 2 (3B1)

Jump to S1C1
Energy calculated at B2PLYP=FULLultrafine/aug-cc-pVTZ
 hartrees
Energy at 0K-489.065741
Energy at 298.15K 
HF Energy-488.850449
Nuclear repulsion energy98.746175
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 B2PLYP=FULLultrafine/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 810 777 77.59      
2 A1 262 251 13.20      
3 B2 923 885 155.13      

Unscaled Zero Point Vibrational Energy (zpe) 997.3 cm-1
Scaled (by 0.9591) Zero Point Vibrational Energy (zpe) 956.5 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 B2PLYP=FULLultrafine/aug-cc-pVTZ
ABC
1.34079 0.24485 0.20704

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/aug-cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.497
F2 0.000 1.346 -0.386
F3 0.000 -1.346 -0.386

Atom - Atom Distances (Å)
  Si1 F2 F3
Si11.61011.6101
F21.61012.6922
F31.61012.6922

picture of Silicon difluoride state 2 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
F2 Si1 F3 113.452
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP=FULLultrafine/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.832      
2 F -0.416      
3 F -0.416      


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 1.318 1.318
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.578 0.000 0.000
y 0.000 -25.242 0.000
z 0.000 0.000 -21.377
Traceless
 xyz
x -0.268 0.000 0.000
y 0.000 -2.765 0.000
z 0.000 0.000 3.033
Polar
3z2-r26.066
x2-y21.664
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.507 0.000 0.000
y 0.000 4.534 0.000
z 0.000 0.000 4.272


<r2> (average value of r2) Å2
<r2> 53.380
(<r2>)1/2 7.306