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All results from a given calculation for SiHF3 (trifluorosilane)

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

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at QCISD/6-311+G(3df,2p)
 hartrees
Energy at 0K-589.045892
Energy at 298.15K 
HF Energy-588.168038
Nuclear repulsion energy188.135280
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/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 2399 2288 63.01      
2 A1 422 402 72.13      
3 E 995 949 263.70      
4 E 849 809 80.86      
4 E 995 949 263.70      
5 E 848 809 22.63      
5 E 848 809 22.63      
6 E 304 290 12.56      
6 E 304 290 12.56      

Unscaled Zero Point Vibrational Energy (zpe) 3981.2 cm-1
Scaled (by 0.9537) Zero Point Vibrational Energy (zpe) 3796.8 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/6-311+G(3df,2p)
ABC
0.23721 0.23721 0.13592

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.321
H2 0.000 0.000 1.774
F3 0.000 1.475 -0.232
F4 1.278 -0.738 -0.232
F5 -1.278 -0.738 -0.232

Atom - Atom Distances (Å)
  Si1 H2 F3 F4 F5
Si11.45301.57541.57541.5754
H21.45302.49002.49002.4900
F31.57542.49002.55502.5550
F41.57542.49002.55502.5550
F51.57542.49002.55502.5550

picture of trifluorosilane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 Si1 F3 110.550 H2 Si1 F4 110.550
H2 Si1 F5 110.550 F3 Si1 F4 108.371
F3 Si1 F5 108.371 F4 Si1 F5 108.371
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability