return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for SiHF3 (trifluorosilane)

using model chemistry: BLYP/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 BLYP/3-21G
 hartrees
Energy at 0K-586.563264
Energy at 298.15K 
HF Energy-586.563264
Nuclear repulsion energy181.280396
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 BLYP/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 2316 2303 121.62 99.31 0.20 0.33
2 A1 811 806 39.58 8.90 0.00 0.00
3 A1 380 378 59.39 1.92 0.75 0.86
4 E 1004 998 153.60 1.17 0.75 0.86
4 E 1004 998 153.59 1.17 0.75 0.86
5 E 843 839 19.61 15.53 0.75 0.86
5 E 843 839 19.61 15.53 0.75 0.86
6 E 286 285 11.43 1.12 0.75 0.86
6 E 286 285 11.43 1.12 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 3886.9 cm-1
Scaled (by 0.9945) Zero Point Vibrational Energy (zpe) 3865.5 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 BLYP/3-21G
ABC
0.22014 0.22014 0.12815

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.364
H2 0.000 0.000 1.842
F3 0.000 1.519 -0.257
F4 1.316 -0.760 -0.257
F5 -1.316 -0.760 -0.257

Atom - Atom Distances (Å)
  Si1 H2 F3 F4 F5
Si11.47861.64111.64111.6411
H21.47862.59132.59132.5913
F31.64112.59132.63142.6314
F41.64112.59132.63142.6314
F51.64112.59132.63142.6314

picture of trifluorosilane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 Si1 F3 112.219 H2 Si1 F4 112.219
H2 Si1 F5 112.219 F3 Si1 F4 106.589
F3 Si1 F5 106.589 F4 Si1 F5 106.589
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 1.183      
2 H -0.171      
3 F -0.337      
4 F -0.337      
5 F -0.337      


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 1.829 1.829
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.815 0.000 0.000
y 0.000 -29.815 0.000
z 0.000 0.000 -26.152
Traceless
 xyz
x -1.831 0.000 0.000
y 0.000 -1.831 0.000
z 0.000 0.000 3.663
Polar
3z2-r27.326
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 2.508 0.000 0.000
y 0.000 2.508 0.000
z 0.000 0.000 2.673


<r2> (average value of r2) Å2
<r2> 87.204
(<r2>)1/2 9.338