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

using model chemistry: BLYP/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 BLYP/6-31G
 hartrees
Energy at 0K-489.157089
Energy at 298.15K 
HF Energy-489.157089
Nuclear repulsion energy93.821506
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/6-31G
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 741 736 64.04 7.75 0.39 0.56
2 A1 270 268 14.09 1.49 0.62 0.77
3 B2 761 755 75.35 8.00 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 886.2 cm-1
Scaled (by 0.9924) Zero Point Vibrational Energy (zpe) 879.4 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/6-31G
ABC
0.82490 0.26083 0.19817

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.633
F2 0.000 1.304 -0.493
F3 0.000 -1.304 -0.493

Atom - Atom Distances (Å)
  Si1 F2 F3
Si11.72321.7232
F21.72322.6084
F31.72322.6084

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 98.379
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.799      
2 F -0.399      
3 F -0.399      


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 1.937 1.937
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.598 0.000 0.000
y 0.000 -26.539 0.000
z 0.000 0.000 -23.348
Traceless
 xyz
x 5.346 0.000 0.000
y 0.000 -5.066 0.000
z 0.000 0.000 -0.279
Polar
3z2-r2-0.559
x2-y26.941
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.107 0.000 0.000
y 0.000 4.184 0.000
z 0.000 0.000 3.346


<r2> (average value of r2) Å2
<r2> 55.072
(<r2>)1/2 7.421

State 2 (3B1)

Jump to S1C1
Energy calculated at BLYP/6-31G
 hartrees
Energy at 0K-489.038734
Energy at 298.15K-488.918775
HF Energy-489.038734
Nuclear repulsion energy91.295656
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/6-31G
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 654 649 13.62      
2 A1 214 212 14.36      
3 B2 777 771 42.14      

Unscaled Zero Point Vibrational Energy (zpe) 822.5 cm-1
Scaled (by 0.9924) Zero Point Vibrational Energy (zpe) 816.2 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/6-31G
ABC
1.25298 0.20340 0.17499

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

Point Group is C2v

Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.708      
2 F -0.354      
3 F -0.354      


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 1.906 1.906
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.761 0.000 0.000
y 0.000 -26.779 0.000
z 0.000 0.000 -20.455
Traceless
 xyz
x 0.855 0.000 0.000
y 0.000 -5.171 0.000
z 0.000 0.000 4.315
Polar
3z2-r28.631
x2-y24.017
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.549 0.000 0.000
y 0.000 3.934 0.000
z 0.000 0.000 3.068


<r2> (average value of r2) Å2
<r2> 60.410
(<r2>)1/2 7.772