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 C2H5F (fluoroethane)

using model chemistry: PBEPBE/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at PBEPBE/cc-pVDZ
 hartrees
Energy at 0K-178.849311
Energy at 298.15K-178.854821
Nuclear repulsion energy78.487222
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/cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3064 3046 19.38      
2 A' 2979 2961 9.96      
3 A' 2946 2929 50.91      
4 A' 1443 1435 0.29      
5 A' 1423 1414 1.03      
6 A' 1365 1357 31.73      
7 A' 1329 1322 0.83      
8 A' 1087 1081 25.16      
9 A' 1052 1046 71.25      
10 A' 868 863 13.07      
11 A' 394 391 5.04      
12 A" 3072 3054 24.38      
13 A" 2990 2973 39.89      
14 A" 1402 1394 5.28      
15 A" 1244 1237 0.01      
16 A" 1134 1128 4.84      
17 A" 784 780 1.19      
18 A" 257 255 0.50      

Unscaled Zero Point Vibrational Energy (zpe) 14416.7 cm-1
Scaled (by 0.9942) Zero Point Vibrational Energy (zpe) 14333.0 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 PBEPBE/cc-pVDZ
ABC
1.19118 0.30793 0.27029

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.558 0.000
C2 1.130 -0.453 0.000
F3 -1.237 -0.102 0.000
H4 0.040 1.210 0.901
H5 0.040 1.210 -0.901
H6 2.111 0.066 0.000
H7 1.079 -1.100 0.898
H8 1.079 -1.100 -0.898

Atom - Atom Distances (Å)
  C1 C2 F3 H4 H5 H6 H7 H8
C11.51581.40171.11341.11342.16772.17242.1724
C21.51582.39282.18292.18291.10941.10841.1084
F31.40172.39282.04082.04083.35212.67732.6773
H41.11342.18292.04081.80252.53192.53313.1072
H51.11342.18292.04081.80252.53193.10722.5331
H62.16771.10943.35212.53192.53191.79711.7971
H72.17241.10842.67732.53313.10721.79711.7966
H82.17241.10842.67733.10722.53311.79711.7966

picture of fluoroethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 110.360 C1 C2 H7 110.796
C1 C2 H8 110.796 C2 C1 F3 110.141
C2 C1 H4 111.325 C2 C1 H5 111.325
F3 C1 H4 107.920 F3 C1 H5 107.920
H4 C1 H5 108.076 H6 C2 H7 108.255
H6 C2 H8 108.255 H7 C2 H8 108.287
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.145      
2 C -0.098      
3 F -0.226      
4 H 0.025      
5 H 0.025      
6 H 0.034      
7 H 0.047      
8 H 0.047      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.521 0.594 0.000 1.633
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.279 -0.114 0.000
y -0.114 -18.125 0.000
z 0.000 0.000 -18.199
Traceless
 xyz
x -2.117 -0.114 0.000
y -0.114 1.114 0.000
z 0.000 0.000 1.003
Polar
3z2-r22.007
x2-y2-2.154
xy-0.114
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.854 -0.146 0.000
y -0.146 3.801 0.000
z 0.000 0.000 3.575


<r2> (average value of r2) Å2
<r2> 51.786
(<r2>)1/2 7.196