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All results from a given calculation for C2H5F (fluoroethane)

using model chemistry: QCISD/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 QCISD/cc-pVTZ
 hartrees
Energy at 0K-178.784466
Energy at 298.15K-178.790072
HF Energy-178.149703
Nuclear repulsion energy79.400869
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 QCISD/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' 3139 3000 24.91      
2 A' 3073 2936 32.46      
3 A' 3063 2927 14.78      
4 A' 1547 1478 0.52      
5 A' 1519 1452 1.29      
6 A' 1454 1389 25.78      
7 A' 1418 1355 1.24      
8 A' 1150 1098 43.38      
9 A' 1107 1057 57.10      
10 A' 908 868 13.02      
11 A' 416 397 5.91      
12 A" 3152 3012 37.82      
13 A" 3115 2977 17.01      
14 A" 1501 1434 4.38      
15 A" 1325 1266 0.34      
16 A" 1211 1157 4.83      
17 A" 818 782 0.27      
18 A" 257 246 0.65      

Unscaled Zero Point Vibrational Energy (zpe) 15086.5 cm-1
Scaled (by 0.9555) Zero Point Vibrational Energy (zpe) 14415.2 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 QCISD/cc-pVTZ
ABC
1.21747 0.31442 0.27575

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.552 0.000
C2 1.114 -0.463 0.000
F3 -1.223 -0.085 0.000
H4 0.061 1.189 0.885
H5 0.061 1.189 -0.885
H6 2.078 0.048 0.000
H7 1.059 -1.098 0.884
H8 1.059 -1.098 -0.884

Atom - Atom Distances (Å)
  C1 C2 F3 H4 H5 H6 H7 H8
C11.50731.37871.09201.09202.13802.15092.1509
C21.50732.36722.14992.14991.09071.08981.0898
F31.37872.36722.01332.01333.30312.64862.6486
H41.09202.14992.01331.77022.48052.49523.0588
H51.09202.14992.01331.77022.48053.05882.4952
H62.13801.09073.30312.48052.48051.76971.7697
H72.15091.08982.64862.49523.05881.76971.7685
H82.15091.08982.64863.05882.49521.76971.7685

picture of fluoroethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 109.720 C1 C2 H7 110.796
C1 C2 H8 110.796 C2 C1 F3 110.136
C2 C1 H4 110.582 C2 C1 H5 110.582
F3 C1 H4 108.591 F3 C1 H5 108.591
H4 C1 H5 108.296 H6 C2 H7 108.503
H6 C2 H8 108.503 H7 C2 H8 108.456
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability