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

using model chemistry: QCISD(T)=FULL/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(T)=FULL/6-311+G(3df,2p)
 hartrees
Energy at 0K-278.041138
Energy at 298.15K 
HF Energy-277.049986
Nuclear repulsion energy132.679591
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(T)=FULL/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' 3161 3161        
2 A' 3099 3099        
3 A' 3069 3069        
4 A' 1500 1500        
5 A' 1453 1453        
6 A' 1400 1400        
7 A' 1174 1174        
8 A' 1164 1164        
9 A' 884 884        
10 A' 574 574        
11 A' 471 471        
12 A" 3159 3159        
13 A" 1502 1502        
14 A" 1405 1405        
15 A" 1165 1165        
16 A" 964 964        
17 A" 383 383        
18 A" 240 240        

Unscaled Zero Point Vibrational Energy (zpe) 13383.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 13383.0 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(T)=FULL/6-311+G(3df,2p)
ABC
0.31795 0.30101 0.17355

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.323 0.165 0.000
C2 -0.903 1.031 0.000
H3 1.264 0.718 0.000
F4 0.323 -0.645 1.094
F5 0.323 -0.645 -1.094
H6 -1.788 0.396 0.000
H7 -0.908 1.661 0.888
H8 -0.908 1.661 -0.888

Atom - Atom Distances (Å)
  C1 C2 H3 F4 F5 H6 H7 H8
C11.50091.09141.36131.36132.12382.13182.1318
C21.50092.18912.34712.34711.08921.08891.0889
H31.09142.18911.98501.98503.06892.52942.5294
F41.36132.34711.98502.18832.59592.62273.2809
F51.36132.34711.98502.18832.59593.28092.6227
H62.12381.08923.06892.59592.59591.77811.7781
H72.13181.08892.52942.62273.28091.77811.7758
H82.13181.08892.52943.28092.62271.77811.7758

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 109.131 C1 C2 H7 109.779
C1 C2 H8 109.779 C2 C1 H3 114.310
C2 C1 F4 110.079 C2 C1 F5 110.079
H3 C1 F4 107.548 H3 C1 F5 107.548
F4 C1 F5 106.977 H6 C2 H7 109.443
H6 C2 H8 109.443 H7 C2 H8 109.252
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability