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

using model chemistry: B1B95/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 B1B95/cc-pVDZ
 hartrees
Energy at 0K-489.249865
Energy at 298.15K 
HF Energy-489.249865
Nuclear repulsion energy97.937441
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 B1B95/cc-pVDZ
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 852 819 112.29 4.45 0.46 0.63
2 A1 321 308 17.45 0.59 0.50 0.67
3 B2 871 837 133.51 5.19 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 1021.9 cm-1
Scaled (by 0.9612) Zero Point Vibrational Energy (zpe) 982.2 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 B1B95/cc-pVDZ
ABC
0.92162 0.28044 0.21501

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.599
F2 0.000 1.258 -0.466
F3 0.000 -1.258 -0.466

Atom - Atom Distances (Å)
  Si1 F2 F3
Si11.64841.6484
F21.64842.5156
F31.64842.5156

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 99.465
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.648      
2 F -0.324      
3 F -0.324      


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 1.493 1.493
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.448 0.000 0.000
y 0.000 -24.796 0.000
z 0.000 0.000 -22.752
Traceless
 xyz
x 4.326 0.000 0.000
y 0.000 -3.696 0.000
z 0.000 0.000 -0.630
Polar
3z2-r2-1.260
x2-y25.348
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.373 0.000 0.000
y 0.000 3.668 0.000
z 0.000 0.000 3.088


<r2> (average value of r2) Å2
<r2> 51.364
(<r2>)1/2 7.167

State 2 (3B1)

Jump to S1C1
Energy calculated at B1B95/cc-pVDZ
 hartrees
Energy at 0K-489.131850
Energy at 298.15K-489.012039
HF Energy-489.131850
Nuclear repulsion energy96.345355
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 B1B95/cc-pVDZ
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 793 762 46.97      
2 A1 244 235 16.74      
3 B2 918 883 108.34      

Unscaled Zero Point Vibrational Energy (zpe) 977.5 cm-1
Scaled (by 0.9612) Zero Point Vibrational Energy (zpe) 939.6 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 B1B95/cc-pVDZ
ABC
1.31267 0.23093 0.19638

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/cc-pVDZ

Point Group is C2v

Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.597      
2 F -0.298      
3 F -0.298      


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 1.720 1.720
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.553 0.000 0.000
y 0.000 -25.022 0.000
z 0.000 0.000 -20.235
Traceless
 xyz
x 0.076 0.000 0.000
y 0.000 -3.629 0.000
z 0.000 0.000 3.553
Polar
3z2-r27.106
x2-y22.469
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.738 0.000 0.000
y 0.000 3.388 0.000
z 0.000 0.000 2.803


<r2> (average value of r2) Å2
<r2> 54.976
(<r2>)1/2 7.415