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All results from a given calculation for SiHF3 (trifluorosilane)

using model chemistry: PBEPBE/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at PBEPBE/6-31G(2df,p)
 hartrees
Energy at 0K-589.376587
Energy at 298.15K 
HF Energy-589.376587
Nuclear repulsion energy186.572202
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 PBEPBE/6-31G(2df,p)
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 2274 2251 60.51 73.27 0.15 0.27
2 A1 821 813 58.64 6.67 0.00 0.00
3 A1 401 397 49.91 0.73 0.66 0.79
4 E 983 973 185.79 0.45 0.75 0.86
4 E 983 973 185.79 0.45 0.75 0.86
5 E 797 789 18.86 6.17 0.75 0.86
5 E 797 789 18.87 6.17 0.75 0.86
6 E 289 286 8.70 0.46 0.75 0.86
6 E 289 286 8.70 0.46 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 3817.4 cm-1
Scaled (by 0.9897) Zero Point Vibrational Energy (zpe) 3778.1 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 PBEPBE/6-31G(2df,p)
ABC
0.23330 0.23330 0.13373

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/6-31G(2df,p)

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.323
H2 0.000 0.000 1.799
F3 0.000 1.487 -0.234
F4 1.288 -0.744 -0.234
F5 -1.288 -0.744 -0.234

Atom - Atom Distances (Å)
  Si1 H2 F3 F4 F5
Si11.47591.58811.58811.5881
H21.47592.51882.51882.5188
F31.58812.51882.57582.5758
F41.58812.51882.57582.5758
F51.58812.51882.57582.5758

picture of trifluorosilane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 Si1 F3 110.533 H2 Si1 F4 110.533
H2 Si1 F5 110.533 F3 Si1 F4 108.389
F3 Si1 F5 108.389 F4 Si1 F5 108.389
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.339      
2 H 0.025      
3 F -0.122      
4 F -0.122      
5 F -0.122      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 1.059 1.059
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.320 0.000 0.000
y 0.000 -28.320 0.000
z 0.000 0.000 -25.663
Traceless
 xyz
x -1.329 0.000 0.000
y 0.000 -1.329 0.000
z 0.000 0.000 2.657
Polar
3z2-r25.315
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.249 0.000 0.000
y 0.000 3.249 0.000
z 0.000 0.000 3.351


<r2> (average value of r2) Å2
<r2> 83.025
(<r2>)1/2 9.112