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All results from a given calculation for C2H5F (fluoroethane)

using model chemistry: MP2=FULL/3-21G*

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/3-21G*
 hartrees
Energy at 0K-177.414006
Energy at 298.15K-177.419598
HF Energy-177.107895
Nuclear repulsion energy78.033895
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/3-21G*
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' 3183 3017 18.42      
2 A' 3106 2945 5.34      
3 A' 3102 2941 37.20      
4 A' 1634 1549 0.19      
5 A' 1605 1522 4.80      
6 A' 1502 1423 8.53      
7 A' 1491 1413 22.78      
8 A' 1175 1114 17.14      
9 A' 1071 1016 33.61      
10 A' 910 863 5.26      
11 A' 378 358 6.18      
12 A" 3190 3024 30.00      
13 A" 3142 2979 31.26      
14 A" 1589 1507 4.65      
15 A" 1365 1294 0.69      
16 A" 1237 1173 4.36      
17 A" 863 818 0.87      
18 A" 266 252 0.81      

Unscaled Zero Point Vibrational Energy (zpe) 15404.9 cm-1
Scaled (by 0.948) Zero Point Vibrational Energy (zpe) 14603.8 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=FULL/3-21G*
ABC
1.16691 0.30450 0.26571

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.576 0.000
C2 1.145 -0.441 0.000
F3 -1.248 -0.129 0.000
H4 0.045 1.211 0.889
H5 0.045 1.211 -0.889
H6 2.109 0.077 0.000
H7 1.080 -1.074 0.888
H8 1.080 -1.074 -0.888

Atom - Atom Distances (Å)
  C1 C2 F3 H4 H5 H6 H7 H8
C11.53151.43351.09371.09372.16732.16302.1630
C21.53152.41372.17492.17491.09361.09281.0928
F31.43352.41372.06412.06413.36342.66492.6649
H41.09372.17492.06411.77802.51732.50923.0746
H51.09372.17492.06411.77802.51733.07462.5092
H62.16731.09363.36342.51732.51731.78111.7811
H72.16301.09282.66492.50923.07461.78111.7755
H82.16301.09282.66493.07462.50921.78111.7755

picture of fluoroethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 110.181 C1 C2 H7 109.889
C1 C2 H8 109.889 C2 C1 F3 108.945
C2 C1 H4 110.774 C2 C1 H5 110.774
F3 C1 H4 108.776 F3 C1 H5 108.776
H4 C1 H5 108.748 H6 C2 H7 109.098
H6 C2 H8 109.098 H7 C2 H8 108.656
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability