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: MP2=FULL/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2=FULL/aug-cc-pVTZ
 hartrees
Energy at 0K-178.823543
Energy at 298.15K-178.829144
HF Energy-178.152558
Nuclear repulsion energy79.513383
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 MP2=FULL/aug-cc-pVTZ
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' 3171 3017 15.87      
2 A' 3106 2955 32.72      
3 A' 3093 2942 7.74      
4 A' 1556 1480 1.04      
5 A' 1528 1454 2.03      
6 A' 1445 1375 25.68      
7 A' 1413 1344 1.21      
8 A' 1144 1089 19.43      
9 A' 1096 1043 85.56      
10 A' 905 861 17.72      
11 A' 416 396 6.12      
12 A" 3185 3030 22.75      
13 A" 3149 2996 12.70      
14 A" 1512 1438 5.80      
15 A" 1323 1259 0.25      
16 A" 1207 1148 4.25      
17 A" 821 781 0.71      
18 A" 254 241 0.52      

Unscaled Zero Point Vibrational Energy (zpe) 15161.2 cm-1
Scaled (by 0.9514) Zero Point Vibrational Energy (zpe) 14424.4 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 MP2=FULL/aug-cc-pVTZ
ABC
1.21992 0.31573 0.27680

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.551 0.000
C2 1.114 -0.451 0.000
F3 -1.220 -0.097 0.000
H4 0.053 1.184 0.884
H5 0.053 1.184 -0.884
H6 2.069 0.068 0.000
H7 1.062 -1.082 0.882
H8 1.062 -1.082 -0.882

Atom - Atom Distances (Å)
  C1 C2 F3 H4 H5 H6 H7 H8
C11.49781.38151.08851.08852.12472.13872.1387
C21.49782.36032.13992.13991.08721.08641.0864
F31.38152.36032.01052.01053.29332.63762.6376
H41.08852.13992.01051.76792.46832.48093.0454
H51.08852.13992.01051.76792.46833.04542.4809
H62.12471.08723.29332.46832.46831.76531.7653
H72.13871.08642.63762.48093.04541.76531.7647
H82.13871.08642.63763.04542.48091.76531.7647

picture of fluoroethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 109.532 C1 C2 H7 110.698
C1 C2 H8 110.698 C2 C1 F3 110.057
C2 C1 H4 110.667 C2 C1 H5 110.667
F3 C1 H4 108.390 F3 C1 H5 108.390
H4 C1 H5 108.600 H6 C2 H7 108.616
H6 C2 H8 108.616 H7 C2 H8 108.625
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability