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All results from a given calculation for SiHF3 (trifluorosilane)

using model chemistry: MP2=FULL/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at MP2=FULL/3-21G*
 hartrees
Energy at 0K-585.482450
Energy at 298.15K 
HF Energy-585.035711
Nuclear repulsion energy187.511848
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=FULL/3-21G*
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 2515 2384 113.61 58.72 0.18 0.31
2 A1 931 883 72.00 4.19 0.00 0.00
3 A1 441 418 82.19 1.10 0.75 0.85
4 E 1136 1077 256.66 0.63 0.75 0.86
4 E 1136 1077 256.66 0.63 0.75 0.86
5 E 932 883 39.03 10.76 0.75 0.86
5 E 932 883 39.03 10.76 0.75 0.86
6 E 325 308 14.96 0.72 0.75 0.86
6 E 325 308 14.96 0.72 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4336.1 cm-1
Scaled (by 0.948) Zero Point Vibrational Energy (zpe) 4110.7 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=FULL/3-21G*
ABC
0.23563 0.23563 0.13572

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/3-21G*

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.331
H2 0.000 0.000 1.787
F3 0.000 1.476 -0.238
F4 1.278 -0.738 -0.238
F5 -1.278 -0.738 -0.238

Atom - Atom Distances (Å)
  Si1 H2 F3 F4 F5
Si11.45631.58211.58211.5821
H21.45632.50622.50622.5062
F31.58212.50622.55692.5569
F41.58212.50622.55692.5569
F51.58212.50622.55692.5569

picture of trifluorosilane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 Si1 F3 111.079 H2 Si1 F4 111.079
H2 Si1 F5 111.079 F3 Si1 F4 107.816
F3 Si1 F5 107.816 F4 Si1 F5 107.816
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability