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All results from a given calculation for C2H5F (fluoroethane)

using model chemistry: MP2/6-31G(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 MP2/6-31G(2df,p)
 hartrees
Energy at 0K-178.647992
Energy at 298.15K-178.653598
HF Energy-178.092963
Nuclear repulsion energy79.500757
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 MP2/6-31G(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' 3214 3035 12.53      
2 A' 3117 2944 5.92      
3 A' 3106 2933 36.54      
4 A' 1562 1475 0.62      
5 A' 1531 1446 1.50      
6 A' 1460 1379 29.08      
7 A' 1420 1341 2.22      
8 A' 1159 1094 52.71      
9 A' 1114 1052 36.23      
10 A' 916 865 7.70      
11 A' 408 385 5.03      
12 A" 3224 3045 16.92      
13 A" 3162 2986 27.72      
14 A" 1513 1429 4.39      
15 A" 1329 1255 0.16      
16 A" 1217 1149 4.94      
17 A" 817 772 0.69      
18 A" 266 251 0.53      

Unscaled Zero Point Vibrational Energy (zpe) 15266.2 cm-1
Scaled (by 0.9445) Zero Point Vibrational Energy (zpe) 14418.9 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 MP2/6-31G(2df,p)
ABC
1.21438 0.31610 0.27687

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.553 0.000
C2 1.110 -0.467 0.000
F3 -1.220 -0.082 0.000
H4 0.071 1.192 0.885
H5 0.071 1.192 -0.885
H6 2.078 0.037 0.000
H7 1.050 -1.102 0.884
H8 1.050 -1.102 -0.884

Atom - Atom Distances (Å)
  C1 C2 F3 H4 H5 H6 H7 H8
C11.50801.37571.09411.09412.14102.15022.1502
C21.50802.36262.14872.14871.09101.09011.0901
F31.37572.36262.01862.01863.30052.64172.6417
H41.09412.14872.01861.77032.47892.49403.0580
H51.09412.14872.01861.77032.47893.05802.4940
H62.14101.09103.30052.47892.47891.77051.7705
H72.15021.09012.64172.49403.05801.77051.7686
H82.15021.09012.64173.05802.49401.77051.7686

picture of fluoroethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 109.899 C1 C2 H7 110.682
C1 C2 H8 110.682 C2 C1 F3 109.942
C2 C1 H4 110.321 C2 C1 H5 110.321
F3 C1 H4 109.104 F3 C1 H5 109.104
H4 C1 H5 108.009 H6 C2 H7 108.539
H6 C2 H8 108.539 H7 C2 H8 108.437
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability