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

using model chemistry: MP2/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/6-31G(2df,p)
 hartrees
Energy at 0K-277.733896
Energy at 298.15K 
HF Energy-276.962933
Nuclear repulsion energy132.926830
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 MP2/6-31G(2df,p)
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' 3234 3054 6.24 37.87 0.73 0.85
2 A' 3130 2957 44.52 101.82 0.20 0.34
3 A' 3126 2952 3.21 68.80 0.02 0.05
4 A' 1513 1429 5.41 12.18 0.75 0.86
5 A' 1465 1384 75.10 1.83 0.61 0.76
6 A' 1411 1333 0.58 0.66 0.75 0.86
7 A' 1196 1130 82.40 2.97 0.41 0.58
8 A' 1173 1107 31.10 3.14 0.45 0.62
9 A' 894 844 4.96 6.19 0.19 0.32
10 A' 577 545 4.70 0.72 0.44 0.61
11 A' 470 444 11.43 0.77 0.62 0.77
12 A" 3232 3053 4.85 45.26 0.75 0.86
13 A" 1518 1434 0.02 7.42 0.75 0.86
14 A" 1441 1361 28.60 8.18 0.75 0.86
15 A" 1202 1136 141.40 1.90 0.75 0.86
16 A" 986 932 32.21 3.55 0.75 0.86
17 A" 379 358 0.10 0.21 0.75 0.86
18 A" 249 235 0.07 0.01 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 13598.0 cm-1
Scaled (by 0.9445) Zero Point Vibrational Energy (zpe) 12843.3 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 MP2/6-31G(2df,p)
ABC
0.31850 0.30264 0.17422

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.325 0.161 0.000
C2 -0.906 1.024 0.000
H3 1.259 0.730 0.000
F4 0.325 -0.640 1.093
F5 0.325 -0.640 -1.093
H6 -1.786 0.380 0.000
H7 -0.920 1.653 0.888
H8 -0.920 1.653 -0.888

Atom - Atom Distances (Å)
  C1 C2 H3 F4 F5 H6 H7 H8
C11.50351.09361.35551.35552.12242.13702.1370
C21.50352.18512.34102.34101.08951.08911.0891
H31.09362.18511.98651.98653.06492.52772.5277
F41.35552.34101.98652.18622.58722.61813.2770
F51.35552.34101.98652.18622.58723.27702.6181
H62.12241.08953.06492.58722.58721.77741.7774
H72.13701.08912.52772.61813.27701.77741.7767
H82.13701.08912.52773.27702.61811.77741.7767

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 108.827 C1 C2 H7 110.000
C1 C2 H8 110.000 C2 C1 H3 113.633
C2 C1 F4 109.826 C2 C1 F5 109.826
H3 C1 F4 107.928 H3 C1 F5 107.928
F4 C1 F5 107.497 H6 C2 H7 109.345
H6 C2 H8 109.345 H7 C2 H8 109.306
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability