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

using model chemistry: QCISD(T)/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(T)/6-31G*
 hartrees
Energy at 0K-277.585059
Energy at 298.15K 
HF Energy-276.942137
Nuclear repulsion energy131.670258
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)/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' 3170 3041        
2 A' 3102 2976        
3 A' 3077 2952        
4 A' 1528 1466        
5 A' 1483 1422        
6 A' 1428 1370        
7 A' 1192 1143        
8 A' 1176 1128        
9 A' 894 858        
10 A' 566 542        
11 A' 463 444        
12 A" 3166 3037        
13 A" 1530 1468        
14 A" 1439 1380        
15 A" 1199 1150        
16 A" 991 951        
17 A" 380 364        
18 A" 257 247        

Unscaled Zero Point Vibrational Energy (zpe) 13519.5 cm-1
Scaled (by 0.9593) Zero Point Vibrational Energy (zpe) 12969.3 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(T)/6-31G*
ABC
0.31034 0.29936 0.17111

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.327 0.170 0.000
C2 -0.911 1.027 0.000
H3 1.269 0.734 0.000
F4 0.327 -0.645 1.108
F5 0.327 -0.645 -1.108
H6 -1.790 0.372 0.000
H7 -0.930 1.660 0.894
H8 -0.930 1.660 -0.894

Atom - Atom Distances (Å)
  C1 C2 H3 F4 F5 H6 H7 H8
C11.50531.09731.37571.37572.12612.14452.1445
C21.50532.19922.35692.35691.09591.09591.0959
H31.09732.19922.00382.00383.07962.54802.5480
F41.37572.35692.00382.21612.59642.63403.3018
F51.37572.35692.00382.21612.59643.30182.6340
H62.12611.09593.07962.59642.59641.78811.7881
H72.14451.09592.54802.63403.30181.78811.7887
H82.14451.09592.54803.30182.63401.78811.7887

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 108.619 C1 C2 H7 110.062
C1 C2 H8 110.062 C2 C1 H3 114.431
C2 C1 F4 109.706 C2 C1 F5 109.706
H3 C1 F4 107.714 H3 C1 F5 107.714
F4 C1 F5 107.309 H6 C2 H7 109.341
H6 C2 H8 109.341 H7 C2 H8 109.395
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability