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 C2HF3 (Trifluoroethylene)

using model chemistry: mPW1PW91/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at mPW1PW91/3-21G
 hartrees
Energy at 0K-374.146903
Energy at 298.15K-374.148723
Nuclear repulsion energy 
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 mPW1PW91/3-21G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3314 3163 4.32      
2 A' 1874 1789 52.63      
3 A' 1430 1365 72.79      
4 A' 1324 1263 121.63      
5 A' 1204 1150 105.38      
6 A' 941 898 38.65      
7 A' 613 585 2.24      
8 A' 470 449 2.77      
9 A' 225 215 5.21      
10 A" 882 842 42.42      
11 A" 606 579 0.85      
12 A" 313 298 6.39      

Unscaled Zero Point Vibrational Energy (zpe) 6597.5 cm-1
Scaled (by 0.9546) Zero Point Vibrational Energy (zpe) 6298.0 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 mPW1PW91/3-21G
ABC
0.34147 0.12516 0.09159

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.431 0.000
C2 -0.692 -0.690 0.000
F3 1.339 0.523 0.000
F4 -0.590 1.640 0.000
F5 -0.091 -1.915 0.000
H6 -1.768 -0.674 0.000

Atom - Atom Distances (Å)
  C1 C2 F3 F4 F5 H6
C11.31771.34241.34482.34852.0854
C21.31772.36612.33201.36481.0763
F31.34242.36612.22922.82723.3303
F41.34482.33202.22923.59002.5965
F52.34851.36482.82723.59002.0866
H62.08541.07633.33032.59652.0866

picture of Trifluoroethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 F5 122.192 C1 C2 H6 120.836
C2 C1 F3 125.610 C2 C1 F4 122.285
F3 C1 F4 112.105 F5 C2 H6 116.972
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.543      
2 C 0.010      
3 F -0.266      
4 F -0.273      
5 F -0.272      
6 H 0.258      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.326 0.119 0.000 1.332
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.317 1.000 0.000
y 1.000 -29.086 0.000
z 0.000 0.000 -25.364
Traceless
 xyz
x 2.908 1.000 0.000
y 1.000 -4.246 0.000
z 0.000 0.000 1.337
Polar
3z2-r22.675
x2-y24.769
xy1.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.080 0.543 0.000
y 0.543 3.959 0.000
z 0.000 0.000 1.093


<r2> (average value of r2) Å2
<r2> 105.861
(<r2>)1/2 10.289