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All results from a given calculation for SiH2F2 (difluorosilane)

using model chemistry: B2PLYP=FULLultrafine/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B2PLYP=FULLultrafine/STO-3G
 hartrees
Energy at 0K-483.775781
Energy at 298.15K 
HF Energy-483.748733
Nuclear repulsion energy116.124876
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 B2PLYP=FULLultrafine/STO-3G
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 2655 2655 32.85 63.05 0.13 0.24
2 A1 1141 1141 135.13 18.40 0.72 0.84
3 A1 854 854 10.22 4.59 0.16 0.27
4 A1 307 307 13.55 1.54 0.75 0.86
5 A2 821 821 0.00 12.70 0.75 0.86
6 B1 2690 2690 54.61 39.19 0.75 0.86
7 B1 708 708 118.06 3.78 0.75 0.86
8 B2 1078 1078 252.02 3.16 0.75 0.86
9 B2 925 925 4.91 6.05 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 5588.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 5588.3 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 B2PLYP=FULLultrafine/STO-3G
ABC
0.77042 0.24806 0.20026

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/STO-3G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.467
F2 0.000 1.309 -0.507
F3 0.000 -1.309 -0.507
H4 1.185 0.000 1.294
H5 -1.185 0.000 1.294

Atom - Atom Distances (Å)
  Si1 F2 F3 H4 H5
Si11.63171.63171.44521.4452
F21.63172.61842.52242.5224
F31.63172.61842.52242.5224
H41.44522.52242.52242.3697
H51.44522.52242.52242.3697

picture of difluorosilane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
F2 Si1 F3 106.712 F2 Si1 H4 109.981
F2 Si1 H5 109.981 F3 Si1 H4 109.981
F3 Si1 H5 109.981 H4 Si1 H5 110.147
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability