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

using model chemistry: QCISD(T)/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at QCISD(T)/6-311+G(3df,2p)
 hartrees
Energy at 0K-488.622168
Energy at 298.15K 
HF Energy-487.990323
Nuclear repulsion energy100.076413
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 QCISD(T)/6-311+G(3df,2p)
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 835 796        
2 A1 334 319        
3 B2 852 812        

Unscaled Zero Point Vibrational Energy (zpe) 1010.2 cm-1
Scaled (by 0.9537) Zero Point Vibrational Energy (zpe) 963.4 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 QCISD(T)/6-311+G(3df,2p)
ABC
0.99534 0.28779 0.22324

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)/6-311+G(3df,2p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.577
F2 0.000 1.242 -0.449
F3 0.000 -1.242 -0.449

Atom - Atom Distances (Å)
  Si1 F2 F3
Si11.61021.6102
F21.61022.4832
F31.61022.4832

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 100.905
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability