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 CF3CH2F (1,1,1,2-tetrafluoroethane)

using model chemistry: HF/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HF/6-31G**
 hartrees
Energy at 0K-474.661776
Energy at 298.15K-474.666070
Nuclear repulsion energy275.821465
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 HF/6-31G**
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' 3258 2940 16.66      
2 A' 1646 1485 12.60      
3 A' 1614 1457 22.18      
4 A' 1456 1314 194.56      
5 A' 1361 1229 292.38      
6 A' 1234 1114 113.39      
7 A' 927 837 19.34      
8 A' 723 653 42.26      
9 A' 594 536 13.32      
10 A' 446 402 0.90      
11 A' 233 211 4.04      
12 A" 3321 2998 22.06      
13 A" 1468 1325 204.76      
14 A" 1340 1210 49.46      
15 A" 1092 986 58.06      
16 A" 578 521 4.32      
17 A" 382 345 1.32      
18 A" 117 105 7.03      

Unscaled Zero Point Vibrational Energy (zpe) 10894.7 cm-1
Scaled (by 0.9026) Zero Point Vibrational Energy (zpe) 9833.6 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 HF/6-31G**
ABC
0.18318 0.09562 0.09427

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.357 0.192 0.000
C2 -1.150 0.236 0.000
F3 0.827 1.430 0.000
F4 0.827 -0.423 1.066
F5 0.827 -0.423 -1.066
F6 -1.621 -1.035 0.000
H7 -1.489 0.751 0.887
H8 -1.489 0.751 -0.887

Atom - Atom Distances (Å)
  C1 C2 F3 F4 F5 F6 H7 H8
C11.50711.32371.31771.31772.32782.12302.1230
C21.50712.30922.34022.34021.35551.08091.0809
F31.32372.30922.13802.13803.47392.57122.5712
F41.31772.34022.13802.13182.73892.60293.2493
F51.31772.34022.13802.13182.73893.24932.6029
F62.32781.35553.47392.73892.73891.99911.9991
H72.12301.08092.57122.60293.24931.99911.7744
H82.12301.08092.57123.24932.60291.99911.7744

picture of 1,1,1,2-tetrafluoroethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 F6 108.702 C1 C2 H7 109.126
C1 C2 H8 109.126 C2 C1 F3 109.151
C2 C1 F4 111.710 C2 C1 F5 111.710
F3 C1 F4 108.078 F3 C1 F5 108.078
F4 C1 F5 107.982 F6 C2 H7 109.762
F6 C2 H8 109.762 H7 C2 H8 110.333
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 1.045      
2 C 0.124      
3 F -0.362      
4 F -0.351      
5 F -0.351      
6 F -0.388      
7 H 0.142      
8 H 0.142      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.355 1.660 0.000 2.143
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.667 -3.260 0.000
y -3.260 -33.021 0.000
z 0.000 0.000 -31.220
Traceless
 xyz
x 0.454 -3.260 0.000
y -3.260 -1.577 0.000
z 0.000 0.000 1.123
Polar
3z2-r22.247
x2-y21.354
xy-3.260
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.136 -0.009 0.000
y -0.009 3.216 0.000
z 0.000 0.000 3.204


<r2> (average value of r2) Å2
<r2> 130.181
(<r2>)1/2 11.410