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

using model chemistry: CID/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CID/3-21G
 hartrees
Energy at 0K-275.834721
Energy at 298.15K 
HF Energy-275.442829
Nuclear repulsion energy130.659489
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 CID/3-21G
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' 3229 3008 20.62      
2 A' 3190 2972 41.14      
3 A' 3151 2936 1.90      
4 A' 1600 1490 4.18      
5 A' 1531 1426 36.04      
6 A' 1505 1402 34.02      
7 A' 1228 1144 36.85      
8 A' 1178 1098 81.73      
9 A' 906 844 7.03      
10 A' 560 522 9.38      
11 A' 455 424 18.14      
12 A" 3229 3008 8.03      
13 A" 1607 1497 0.70      
14 A" 1505 1402 48.31      
15 A" 1266 1180 85.13      
16 A" 1048 977 31.77      
17 A" 366 341 0.01      
18 A" 260 242 0.15      

Unscaled Zero Point Vibrational Energy (zpe) 13906.5 cm-1
Scaled (by 0.9316) Zero Point Vibrational Energy (zpe) 12955.3 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 CID/3-21G
ABC
0.30159 0.29780 0.16796

See section I.F.4 to change rotational constant units
Geometric Data calculated at CID/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.330 0.173 0.000
C2 -0.917 1.028 0.000
H3 1.246 0.757 0.000
F4 0.330 -0.647 1.127
F5 0.330 -0.647 -1.127
H6 -1.789 0.375 0.000
H7 -0.936 1.654 0.891
H8 -0.936 1.654 -0.891

Atom - Atom Distances (Å)
  C1 C2 H3 F4 F5 H6 H7 H8
C11.51131.08671.39341.39342.12862.14232.1423
C21.51132.17982.37202.37201.08981.08891.0889
H31.08672.17982.01992.01993.05952.52212.5221
F41.39342.37202.01992.25332.60822.63673.3114
F51.39342.37202.01992.25332.60823.31142.6367
H62.12861.08983.05952.60822.60821.77691.7769
H72.14231.08892.52212.63673.31141.77691.7810
H82.14231.08892.52213.31142.63671.77691.7810

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 108.757 C1 C2 H7 109.885
C1 C2 H8 109.885 C2 C1 H3 113.062
C2 C1 F4 109.432 C2 C1 F5 109.432
H3 C1 F4 108.432 H3 C1 F5 108.432
F4 C1 F5 107.916 H6 C2 H7 109.282
H6 C2 H8 109.282 H7 C2 H8 109.729
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability