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All results from a given calculation for SiHF3 (trifluorosilane)

using model chemistry: CCSD/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at CCSD/6-311G*
 hartrees
Energy at 0K-588.814694
Energy at 298.15K 
HF Energy-588.110774
Nuclear repulsion energy187.194566
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 CCSD/6-311G*
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 2390 2279 67.75      
2 A1 862 821 95.87      
3 A1 426 406 88.80      
4 E 1021 974 300.74      
4 E 1021 974 300.74      
5 E 869 828 20.30      
6 E 310 295 16.29      
5 E 869 828 20.30      
6 E 310 295 16.29      

Unscaled Zero Point Vibrational Energy (zpe) 4038.0 cm-1
Scaled (by 0.9535) Zero Point Vibrational Energy (zpe) 3850.2 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 CCSD/6-311G*
ABC
0.23483 0.23483 0.13498

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD/6-311G*

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.328
H2 0.000 0.000 1.786
F3 0.000 1.480 -0.236
F4 1.282 -0.740 -0.236
F5 -1.282 -0.740 -0.236

Atom - Atom Distances (Å)
  Si1 H2 F3 F4 F5
Si11.45811.58431.58431.5843
H21.45812.50642.50642.5064
F31.58432.50642.56392.5639
F41.58432.50642.56392.5639
F51.58432.50642.56392.5639

picture of trifluorosilane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 Si1 F3 110.873 H2 Si1 F4 110.873
H2 Si1 F5 110.873 F3 Si1 F4 108.034
F3 Si1 F5 108.034 F4 Si1 F5 108.034
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability