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All results from a given calculation for SiHF3 (trifluorosilane)

using model chemistry: CCD/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 CCD/3-21G*
 hartrees
Energy at 0K-585.463456
Energy at 298.15K 
HF Energy-585.035800
Nuclear repulsion energy187.738043
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 CCD/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 2477 2369 100.83      
2 A1 935 895 77.29      
3 A1 444 425 87.76      
4 E 1135 1085 255.28      
4 E 1135 1085 255.28      
5 E 922 882 40.81      
5 E 922 882 40.81      
6 E 327 312 15.86      
6 E 327 312 15.86      

Unscaled Zero Point Vibrational Energy (zpe) 4311.1 cm-1
Scaled (by 0.9565) Zero Point Vibrational Energy (zpe) 4123.5 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 CCD/3-21G*
ABC
0.23620 0.23620 0.13621

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.332
H2 0.000 0.000 1.793
F3 0.000 1.474 -0.239
F4 1.276 -0.737 -0.239
F5 -1.276 -0.737 -0.239

Atom - Atom Distances (Å)
  Si1 H2 F3 F4 F5
Si11.46101.58011.58011.5801
H21.46102.50962.50962.5096
F31.58012.50962.55232.5523
F41.58012.50962.55232.5523
F51.58012.50962.55232.5523

picture of trifluorosilane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 Si1 F3 111.162 H2 Si1 F4 111.162
H2 Si1 F5 111.162 F3 Si1 F4 107.729
F3 Si1 F5 107.729 F4 Si1 F5 107.729
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability