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

using model chemistry: ROHF/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 ROHF/6-31G*
 hartrees
Energy at 0K-487.884672
Energy at 298.15K-487.765052
HF Energy-487.884672
Nuclear repulsion energy101.381963
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 ROHF/6-31G*
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 933 830 157.86      
2 A1 373 332 26.71      
3 B2 950 846 178.46      

Unscaled Zero Point Vibrational Energy (zpe) 1127.7 cm-1
Scaled (by 0.8904) Zero Point Vibrational Energy (zpe) 1004.1 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 ROHF/6-31G*
ABC
0.98976 0.30016 0.23032

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.578
F2 0.000 1.216 -0.450
F3 0.000 -1.216 -0.450

Atom - Atom Distances (Å)
  Si1 F2 F3
Si11.59221.5922
F21.59222.4315
F31.59222.4315

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 99.560
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at ROHF/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.991      
2 F -0.495      
3 F -0.495      


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 1.180 1.180
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.865 0.000 0.000
y 0.000 -25.069 0.000
z 0.000 0.000 -23.755
Traceless
 xyz
x 5.547 0.000 0.000
y 0.000 -3.758 0.000
z 0.000 0.000 -1.789
Polar
3z2-r2-3.577
x2-y26.204
xy0.000
xz0.000
yz0.000


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


<r2> (average value of r2) Å2
<r2> 49.022
(<r2>)1/2 7.002

State 2 (3B1)

Jump to S1C1
Energy calculated at ROHF/6-31G*
 hartrees
Energy at 0K-487.794616
Energy at 298.15K-487.674913
HF Energy-487.794616
Nuclear repulsion energy99.758980
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 ROHF/6-31G*
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 893 795 83.20      
2 A1 296 263 26.77      
3 B2 1022 910 175.01      

Unscaled Zero Point Vibrational Energy (zpe) 1105.1 cm-1
Scaled (by 0.8904) Zero Point Vibrational Energy (zpe) 984.0 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 ROHF/6-31G*
ABC
1.38883 0.24866 0.21090

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

Point Group is C2v

Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at ROHF/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.957      
2 F -0.478      
3 F -0.478      


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 2.167 2.167
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.215 0.000 0.000
y 0.000 -25.520 0.000
z 0.000 0.000 -19.930
Traceless
 xyz
x 0.510 0.000 0.000
y 0.000 -4.448 0.000
z 0.000 0.000 3.937
Polar
3z2-r27.875
x2-y23.305
xy0.000
xz0.000
yz0.000


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


<r2> (average value of r2) Å2
<r2> 52.135
(<r2>)1/2 7.220