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All results from a given calculation for SiH2F2 (difluorosilane)

using model chemistry: B97D3/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B97D3/cc-pVDZ
 hartrees
Energy at 0K-490.383717
Energy at 298.15K 
HF Energy-490.383717
Nuclear repulsion energy114.558801
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 B97D3/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 2208 2189 53.66 187.24 0.12 0.21
2 A1 936 928 122.91 13.13 0.67 0.80
3 A1 812 805 46.27 5.64 0.18 0.30
4 A1 291 288 16.85 0.97 0.74 0.85
5 A2 704 698 0.00 17.30 0.75 0.86
6 B1 2228 2209 151.57 43.18 0.75 0.86
7 B1 679 673 114.99 7.07 0.75 0.86
8 B2 962 954 252.81 1.56 0.75 0.86
9 B2 851 844 0.62 8.28 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4835.3 cm-1
Scaled (by 0.9915) Zero Point Vibrational Energy (zpe) 4794.2 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 B97D3/cc-pVDZ
ABC
0.76757 0.23818 0.19526

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.467
F2 0.000 1.334 -0.503
F3 0.000 -1.334 -0.503
H4 1.261 0.000 1.262
H5 -1.261 0.000 1.262

Atom - Atom Distances (Å)
  Si1 F2 F3 H4 H5
Si11.64921.64921.49061.4906
F21.64922.66712.54672.5467
F31.64922.66712.54672.5467
H41.49062.54672.54672.5212
H51.49062.54672.54672.5212

picture of difluorosilane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
F2 Si1 F3 107.919 F2 Si1 H4 108.300
F2 Si1 H5 108.300 F3 Si1 H4 108.300
F3 Si1 H5 108.300 H4 Si1 H5 115.491
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.773      
2 F -0.303      
3 F -0.303      
4 H -0.083      
5 H -0.083      


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 1.684 1.684
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.705 0.000 0.000
y 0.000 -26.257 0.000
z 0.000 0.000 -22.772
Traceless
 xyz
x 1.809 0.000 0.000
y 0.000 -3.518 0.000
z 0.000 0.000 1.709
Polar
3z2-r23.419
x2-y23.552
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.487 0.000 0.000
y 0.000 3.027 0.000
z 0.000 0.000 3.151


<r2> (average value of r2) Å2
<r2> 60.925
(<r2>)1/2 7.805