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 CF3CHF2 (pentafluoroethane)

using model chemistry: B3PW91/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3PW91/6-31G(2df,p)
 hartrees
Energy at 0K-575.834168
Energy at 298.15K-575.837533
HF Energy-575.834168
Nuclear repulsion energy360.881048
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 B3PW91/6-31G(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 A' 3077 2958 28.92      
2 A' 1449 1393 0.85      
3 A' 1326 1274 161.48      
4 A' 1221 1174 170.77      
5 A' 1168 1123 108.08      
6 A' 878 844 35.93      
7 A' 730 702 31.63      
8 A' 582 559 13.17      
9 A' 523 503 6.48      
10 A' 360 346 0.03      
11 A' 236 227 3.09      
12 A" 1394 1340 13.22      
13 A" 1254 1205 340.38      
14 A" 1183 1137 78.22      
15 A" 586 564 0.58      
16 A" 414 398 0.83      
17 A" 201 193 1.85      
18 A" 65 63 0.64      

Unscaled Zero Point Vibrational Energy (zpe) 8322.3 cm-1
Scaled (by 0.9614) Zero Point Vibrational Energy (zpe) 8001.1 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 B3PW91/6-31G(2df,p)
ABC
0.12339 0.08109 0.06715

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.120 -0.604 0.000
C2 -0.601 0.752 0.000
F3 1.436 -0.444 0.000
F4 -0.232 -1.296 1.081
F5 -0.232 -1.296 -1.081
F6 -0.232 1.435 -1.094
F7 -0.232 1.435 1.094
H8 -1.689 0.609 0.000

Atom - Atom Distances (Å)
  C1 C2 F3 F4 F5 F6 F7 H8
C11.53611.32551.33091.33092.34022.34022.1777
C21.53612.36232.34532.34531.34111.34111.0971
F31.32552.36232.16212.16212.74012.74013.2972
F41.33092.34532.16212.16243.49102.73062.6305
F51.33092.34532.16212.16242.73063.49102.6305
F62.34021.34112.74013.49102.73062.18792.0004
F72.34021.34112.74012.73063.49102.18792.0004
H82.17771.09713.29722.63052.63052.00042.0004

picture of pentafluoroethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 F6 108.664 C1 C2 F7 108.664
C1 C2 H8 110.475 C2 C1 F3 111.071
C2 C1 F4 109.570 C2 C1 F5 109.570
F3 C1 F4 108.965 F3 C1 F5 108.965
F4 C1 F5 108.657 F6 C2 F7 109.309
F6 C2 H8 109.849 F7 C2 H8 109.849
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.259      
2 C 0.040      
3 F -0.075      
4 F -0.080      
5 F -0.080      
6 F -0.100      
7 F -0.100      
8 H 0.135      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.303 -0.059 0.000 1.304
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -33.128 -0.785 0.000
y -0.785 -37.015 0.000
z 0.000 0.000 -37.027
Traceless
 xyz
x 3.893 -0.785 0.000
y -0.785 -1.938 0.000
z 0.000 0.000 -1.955
Polar
3z2-r2-3.911
x2-y23.887
xy-0.785
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.941 -0.023 0.000
y -0.023 4.011 0.000
z 0.000 0.000 4.023


<r2> (average value of r2) Å2
<r2> 165.496
(<r2>)1/2 12.865