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

using model chemistry: QCISD/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 QCISD/6-31G
 hartrees
Energy at 0K-277.307130
Energy at 298.15K 
HF Energy-276.854214
Nuclear repulsion energy128.529291
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/6-31G
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' 3137 3023 29.60      
2 A' 3114 3000 18.94      
3 A' 3044 2933 3.58      
4 A' 1540 1484 4.95      
5 A' 1486 1432 28.76      
6 A' 1429 1377 29.65      
7 A' 1194 1151 29.01      
8 A' 1126 1085 70.60      
9 A' 870 838 15.46      
10 A' 534 515 12.48      
11 A' 432 416 17.60      
12 A" 3127 3014 11.66      
13 A" 1540 1484 3.64      
14 A" 1410 1359 35.50      
15 A" 1178 1135 68.31      
16 A" 963 928 68.30      
17 A" 369 356 0.00      
18 A" 252 243 0.12      

Unscaled Zero Point Vibrational Energy (zpe) 13372.6 cm-1
Scaled (by 0.9636) Zero Point Vibrational Energy (zpe) 12885.8 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/6-31G
ABC
0.29042 0.28991 0.16264

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.330 0.190 0.000
C2 -0.920 1.044 0.000
H3 1.280 0.737 0.000
F4 0.330 -0.660 1.149
F5 0.330 -0.660 -1.149
H6 -1.803 0.388 0.000
H7 -0.942 1.680 0.897
H8 -0.942 1.680 -0.897

Atom - Atom Distances (Å)
  C1 C2 H3 F4 F5 H6 H7 H8
C11.51411.09611.42931.42932.14202.15452.1545
C21.51412.22142.40582.40581.09941.09951.0995
H31.09612.22142.04322.04323.10222.57492.5749
F41.42932.40582.04322.29782.63982.67533.3584
F51.42932.40582.04322.29782.63983.35842.6753
H62.14201.09943.10222.63982.63981.79241.7924
H72.15451.09952.57492.67533.35841.79241.7938
H82.15451.09952.57493.35842.67531.79241.7938

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 109.055 C1 C2 H7 110.029
C1 C2 H8 110.029 C2 C1 H3 115.728
C2 C1 F4 109.607 C2 C1 F5 109.607
H3 C1 F4 107.271 H3 C1 F5 107.271
F4 C1 F5 106.984 H6 C2 H7 109.197
H6 C2 H8 109.197 H7 C2 H8 109.315
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability