return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for HSiF (fluorosilylene)

using model chemistry: MP2/aug-cc-pVQZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/aug-cc-pVQZ
 hartrees
Energy at 0K-389.410427
Energy at 298.15K 
HF Energy-389.020173
Nuclear repulsion energy48.111235
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 MP2/aug-cc-pVQZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 2062 1958 391.46 244.98 0.35 0.52
2 A' 888 844 79.87 12.17 0.40 0.57
3 A' 842 800 129.51 6.78 0.72 0.84

Unscaled Zero Point Vibrational Energy (zpe) 1896.1 cm-1
Scaled (by 0.9497) Zero Point Vibrational Energy (zpe) 1800.7 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 MP2/aug-cc-pVQZ
ABC
7.65454 0.55551 0.51792

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/aug-cc-pVQZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.063 -0.599 0.000
F2 0.063 1.018 0.000
H3 -1.449 -0.773 0.000

Atom - Atom Distances (Å)
  Si1 F2 H3
Si11.61791.5222
F21.61792.3442
H31.52222.3442

picture of fluorosilylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
F2 Si1 H3 96.536
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability