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

using model chemistry: BLYP/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 BLYP/6-311G**
 hartrees
Energy at 0K-489.322091
Energy at 298.15K 
HF Energy-489.322091
Nuclear repulsion energy98.034488
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 BLYP/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 793 790 111.17 5.03 0.56 0.71
2 A1 312 310 15.68 0.94 0.49 0.66
3 B2 811 808 138.97 6.76 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 958.3 cm-1
Scaled (by 0.9961) Zero Point Vibrational Energy (zpe) 954.5 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 BLYP/6-311G**
ABC
0.95492 0.27618 0.21422

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.589
F2 0.000 1.267 -0.458
F3 0.000 -1.267 -0.458

Atom - Atom Distances (Å)
  Si1 F2 F3
Si11.64381.6438
F21.64382.5349
F31.64382.5349

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 100.898
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.754      
2 F -0.377      
3 F -0.377      


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 1.379 1.379
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.635 0.000 0.000
y 0.000 -25.380 0.000
z 0.000 0.000 -23.077
Traceless
 xyz
x 4.594 0.000 0.000
y 0.000 -4.024 0.000
z 0.000 0.000 -0.570
Polar
3z2-r2-1.140
x2-y25.745
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.359 0.000 0.000
y 0.000 3.960 0.000
z 0.000 0.000 3.234


<r2> (average value of r2) Å2
<r2> 51.720
(<r2>)1/2 7.192

State 2 (3B1)

Jump to S1C1
Energy calculated at BLYP/6-311G**
 hartrees
Energy at 0K-489.201957
Energy at 298.15K-489.082102
HF Energy-489.201957
Nuclear repulsion energy96.322276
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 BLYP/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 735 732 40.13      
2 A1 238 237 14.23      
3 B2 860 857 110.91      

Unscaled Zero Point Vibrational Energy (zpe) 916.7 cm-1
Scaled (by 0.9961) Zero Point Vibrational Energy (zpe) 913.2 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 BLYP/6-311G**
ABC
1.38105 0.22710 0.19503

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

Point Group is C2v

Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.691      
2 F -0.346      
3 F -0.346      


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 1.661 1.661
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.050 0.000 0.000
y 0.000 -25.542 0.000
z 0.000 0.000 -20.472
Traceless
 xyz
x -0.044 0.000 0.000
y 0.000 -3.781 0.000
z 0.000 0.000 3.824
Polar
3z2-r27.648
x2-y22.491
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.658 0.000 0.000
y 0.000 3.519 0.000
z 0.000 0.000 2.747


<r2> (average value of r2) Å2
<r2> 55.509
(<r2>)1/2 7.450