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All results from a given calculation for C2H5F (fluoroethane)

using model chemistry: CISD/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CISD/6-31G*
 hartrees
Energy at 0K-178.491942
Energy at 298.15K-178.497594
HF Energy-178.076826
Nuclear repulsion energy79.355802
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 CISD/6-31G*
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' 3227 2987 26.21      
2 A' 3158 2923 30.55      
3 A' 3147 2914 20.46      
4 A' 1616 1496 0.18      
5 A' 1583 1466 2.26      
6 A' 1518 1406 33.63      
7 A' 1480 1370 4.92      
8 A' 1193 1104 40.44      
9 A' 1140 1055 53.47      
10 A' 945 875 13.91      
11 A' 422 391 6.67      
12 A" 3240 3000 40.10      
13 A" 3202 2965 27.57      
14 A" 1566 1450 4.49      
15 A" 1359 1258 0.01      
16 A" 1255 1162 5.47      
17 A" 847 784 0.30      
18 A" 275 254 0.79      

Unscaled Zero Point Vibrational Energy (zpe) 15586.2 cm-1
Scaled (by 0.9258) Zero Point Vibrational Energy (zpe) 14429.7 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 CISD/6-31G*
ABC
1.20708 0.31553 0.27603

See section I.F.4 to change rotational constant units
Geometric Data calculated at CISD/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.561 0.000
C2 1.120 -0.451 0.000
F3 -1.221 -0.104 0.000
H4 0.032 1.196 0.886
H5 0.032 1.196 -0.886
H6 2.089 0.051 0.000
H7 1.056 -1.085 0.884
H8 1.056 -1.085 -0.884

Atom - Atom Distances (Å)
  C1 C2 F3 H4 H5 H6 H7 H8
C11.50991.39001.09091.09092.15022.14642.1464
C21.50992.36622.16432.16431.09131.08971.0897
F31.39002.36622.01112.01113.31302.63212.6321
H41.09092.16432.01111.77282.51552.50043.0640
H51.09092.16432.01111.77282.51553.06402.5004
H62.15021.09133.31302.51552.51551.77161.7716
H72.14641.08972.63212.50043.06401.77161.7688
H82.14641.08972.63213.06402.50041.77161.7688

picture of fluoroethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 110.469 C1 C2 H7 110.264
C1 C2 H8 110.264 C2 C1 F3 109.298
C2 C1 H4 111.638 C2 C1 H5 111.638
F3 C1 H4 107.709 F3 C1 H5 107.709
H4 C1 H5 108.694 H6 C2 H7 108.641
H6 C2 H8 108.641 H7 C2 H8 108.506
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability