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

using model chemistry: QCISD/6-311+G(3df,2p)

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/6-311+G(3df,2p)
 hartrees
Energy at 0K-277.919265
Energy at 298.15K 
HF Energy-277.050162
Nuclear repulsion energy132.758070
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/6-311+G(3df,2p)
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' 3167 3020 15.31      
2 A' 3113 2969 28.16      
3 A' 3075 2932 2.99      
4 A' 1509 1439 5.40      
5 A' 1467 1399 64.60      
6 A' 1412 1347 1.50      
7 A' 1187 1132 83.12      
8 A' 1172 1117 42.70      
9 A' 889 848 7.47      
10 A' 578 552 5.49      
11 A' 474 452 13.44      
12 A" 3163 3016 9.67      
13 A" 1511 1441 0.49      
14 A" 1417 1351 20.29      
15 A" 1181 1126 159.28      
16 A" 976 931 56.67      
17 A" 385 368 0.12      
18 A" 239 228 0.06      

Unscaled Zero Point Vibrational Energy (zpe) 13457.0 cm-1
Scaled (by 0.9537) Zero Point Vibrational Energy (zpe) 12834.0 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/6-311+G(3df,2p)
ABC
0.31912 0.30052 0.17370

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-311+G(3df,2p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.323 0.163 0.000
C2 -0.903 1.033 0.000
H3 1.264 0.716 0.000
F4 0.323 -0.646 1.092
F5 0.323 -0.646 -1.092
H6 -1.790 0.401 0.000
H7 -0.907 1.663 0.888
H8 -0.907 1.663 -0.888

Atom - Atom Distances (Å)
  C1 C2 H3 F4 F5 H6 H7 H8
C11.50321.09081.35901.35902.12702.13332.1333
C21.50322.18972.34802.34801.08921.08901.0890
H31.09082.18971.98281.98283.07022.52912.5291
F41.35902.34801.98282.18382.59912.62393.2808
F51.35902.34801.98282.18382.59913.28082.6239
H62.12701.08923.07022.59912.59911.77811.7781
H72.13331.08902.52912.62393.28081.77811.7761
H82.13331.08902.52913.28082.62391.77811.7761

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 109.226 C1 C2 H7 109.733
C1 C2 H8 109.733 C2 C1 H3 114.217
C2 C1 F4 110.137 C2 C1 F5 110.137
H3 C1 F4 107.564 H3 C1 F5 107.564
F4 C1 F5 106.925 H6 C2 H7 109.437
H6 C2 H8 109.437 H7 C2 H8 109.262
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability