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All results from a given calculation for CH3CHF2 (Ethane, 1,1-difluoro-)

using model chemistry: QCISD/6-311G**

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/6-311G**
 hartrees
Energy at 0K-277.754410
Energy at 298.15K 
HF Energy-277.022658
Nuclear repulsion energy132.339132
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/6-311G**
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' 3169 3024 23.09      
2 A' 3125 2982 40.80      
3 A' 3078 2936 4.11      
4 A' 1507 1438 6.36      
5 A' 1477 1410 77.83      
6 A' 1416 1351 3.02      
7 A' 1190 1135 74.38      
8 A' 1178 1124 52.78      
9 A' 892 851 9.73      
10 A' 578 552 7.22      
11 A' 476 455 14.21      
12 A" 3166 3021 13.57      
13 A" 1509 1440 0.04      
14 A" 1442 1376 35.38      
15 A" 1199 1144 142.25      
16 A" 986 941 52.42      
17 A" 388 370 0.01      
18 A" 251 240 0.09      

Unscaled Zero Point Vibrational Energy (zpe) 13513.6 cm-1
Scaled (by 0.9541) Zero Point Vibrational Energy (zpe) 12893.3 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/6-311G**
ABC
0.31573 0.29994 0.17261

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.325 0.163 0.000
C2 -0.908 1.031 0.000
H3 1.264 0.724 0.000
F4 0.325 -0.645 1.098
F5 0.325 -0.645 -1.098
H6 -1.793 0.389 0.000
H7 -0.917 1.662 0.893
H8 -0.917 1.662 -0.893

Atom - Atom Distances (Å)
  C1 C2 H3 F4 F5 H6 H7 H8
C11.50781.09391.36311.36312.12992.14222.1422
C21.50782.19342.35232.35231.09361.09361.0936
H31.09392.19341.99021.99023.07522.53692.5369
F41.36312.35231.99022.19622.59972.62823.2908
F51.36312.35231.99022.19622.59973.29082.6282
H62.12991.09363.07522.59972.59971.78501.7850
H72.14221.09362.53692.62823.29081.78501.7857
H82.14221.09362.53693.29082.62821.78501.7857

picture of Ethane, 1,1-difluoro- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 108.877 C1 C2 H7 109.848
C1 C2 H8 109.848 C2 C1 H3 113.988
C2 C1 F4 109.940 C2 C1 F5 109.940
H3 C1 F4 107.694 H3 C1 F5 107.694
F4 C1 F5 107.341 H6 C2 H7 109.395
H6 C2 H8 109.395 H7 C2 H8 109.461
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability