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All results from a given calculation for SiH2F2 (difluorosilane)

using model chemistry: B2PLYP/daug-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 B2PLYP/daug-cc-pVDZ
 hartrees
Energy at 0K-490.260863
Energy at 298.15K 
HF Energy-490.092356
Nuclear repulsion energy115.631469
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/daug-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 2303 2303 47.77 221.09 0.06 0.12
2 A1 969 969 112.51 5.18 0.72 0.84
3 A1 819 819 77.25 7.43 0.08 0.14
4 A1 290 290 17.59 0.58 0.53 0.69
5 A2 717 717 0.00 6.83 0.75 0.86
6 B1 2322 2322 116.46 34.94 0.75 0.86
7 B1 695 695 116.53 2.48 0.75 0.86
8 B2 938 938 267.06 0.14 0.75 0.86
9 B2 868 868 22.14 4.12 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4960.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 4960.0 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 B2PLYP/daug-cc-pVDZ
ABC
0.77225 0.24428 0.19940

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/daug-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 1.317 -0.502
F3 0.000 -1.317 -0.502
H4 1.250 0.000 1.252
H5 -1.250 0.000 1.252

Atom - Atom Distances (Å)
  Si1 F2 F3 H4 H5
Si11.63511.63511.47581.4758
F21.63512.63312.52472.5247
F31.63512.63312.52472.5247
H41.47582.52472.52472.4994
H51.47582.52472.52472.4994

picture of difluorosilane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
F2 Si1 F3 107.254 F2 Si1 H4 108.388
F2 Si1 H5 108.388 F3 Si1 H4 108.388
F3 Si1 H5 108.388 H4 Si1 H5 115.728
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/daug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.734      
2 F -0.611      
3 F -0.611      
4 H 0.244      
5 H 0.244      


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 1.942 1.942
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.200 0.000 0.000
y 0.000 -27.311 0.000
z 0.000 0.000 -23.404
Traceless
 xyz
x 2.157 0.000 0.000
y 0.000 -4.009 0.000
z 0.000 0.000 1.851
Polar
3z2-r23.702
x2-y24.111
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.105 0.000 0.000
y 0.000 3.926 0.000
z 0.000 0.000 3.920


<r2> (average value of r2) Å2
<r2> 60.452
(<r2>)1/2 7.775