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All results from a given calculation for C2H5F (fluoroethane)

using model chemistry: MP2/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/cc-pVTZ
 hartrees
Energy at 0K-178.756409
Energy at 298.15K 
HF Energy-178.149680
Nuclear repulsion energy79.432911
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/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' 3179 3018 17.18      
2 A' 3096 2940 35.99      
3 A' 3088 2932 9.06      
4 A' 1545 1467 0.68      
5 A' 1518 1441 1.50      
6 A' 1444 1371 25.55      
7 A' 1407 1336 2.48      
8 A' 1142 1085 33.12      
9 A' 1104 1049 65.94      
10 A' 906 860 12.56      
11 A' 414 393 5.84      
12 A" 3192 3030 26.27      
13 A" 3151 2992 18.17      
14 A" 1499 1423 5.02      
15 A" 1323 1256 0.24      
16 A" 1204 1143 4.89      
17 A" 818 777 0.48      
18 A" 262 249 0.59      

Unscaled Zero Point Vibrational Energy (zpe) 15145.7 cm-1
Scaled (by 0.9495) Zero Point Vibrational Energy (zpe) 14380.8 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/cc-pVTZ
ABC
1.21818 0.31482 0.27601

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.557 0.000
C2 1.121 -0.450 0.000
F3 -1.223 -0.103 0.000
H4 0.032 1.190 0.886
H5 0.032 1.190 -0.886
H6 2.081 0.064 0.000
H7 1.066 -1.081 0.884
H8 1.066 -1.081 -0.884

Atom - Atom Distances (Å)
  C1 C2 F3 H4 H5 H6 H7 H8
C11.50671.38921.08901.08902.13912.14452.1445
C21.50672.36932.15812.15811.08901.08721.0872
F31.38922.36932.00732.00733.30832.64112.6411
H41.08902.15812.00731.77122.50022.49463.0583
H51.08902.15812.00731.77122.50023.05832.4946
H62.13911.08903.30832.50022.50021.76681.7668
H72.14451.08722.64112.49463.05831.76681.7671
H82.14451.08722.64113.05832.49461.76681.7671

picture of fluoroethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 109.953 C1 C2 H7 110.491
C1 C2 H8 110.491 C2 C1 F3 109.740
C2 C1 H4 111.479 C2 C1 H5 111.479
F3 C1 H4 107.577 F3 C1 H5 107.577
H4 C1 H5 108.834 H6 C2 H7 108.563
H6 C2 H8 108.563 H7 C2 H8 108.726
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability