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

using model chemistry: PM3

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
Energy calculated at PM3
 hartrees
Energy at 0K 
Energy at 298.15K-0.178293
HF Energy-0.178293
Nuclear repulsion energy105.881532
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 PM3
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' 3191 3108 3.87 89.79 0.03 0.06
2 A' 3101 3020 7.24 65.21 0.75 0.86
3 A' 2854 2780 0.10 97.17 0.35 0.52
4 A' 1476 1438 87.35 5.44 0.41 0.58
5 A' 1392 1356 4.28 32.81 0.75 0.86
6 A' 1380 1344 1.60 7.55 0.71 0.83
7 A' 1117 1088 15.51 14.77 0.66 0.79
8 A' 1095 1067 12.95 14.15 0.62 0.76
9 A' 959 934 0.40 6.31 0.40 0.57
10 A' 582 567 13.46 0.55 0.50 0.67
11 A' 491 478 13.40 1.57 0.69 0.82
12 A" 3105 3024 6.24 65.97 0.75 0.86
13 A" 1535 1495 131.61 2.83 0.75 0.86
14 A" 1399 1362 5.80 34.38 0.75 0.86
15 A" 1039 1012 0.95 15.24 0.75 0.86
16 A" 986 960 0.00 9.03 0.75 0.86
17 A" 410 400 0.12 0.89 0.75 0.86
18 A" 156 152 0.01 0.00 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 13133.5 cm-1
Scaled (by 0.974) Zero Point Vibrational Energy (zpe) 12792.0 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 PM3
ABC
0.33434 0.28009 0.17101

See section I.F.4 to change rotational constant units
Geometric Data calculated at PM3

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.321 0.163 0.000
C2 -0.896 1.098 0.000
H3 1.282 0.718 0.000
F4 0.321 -0.683 1.062
F5 0.321 -0.683 -1.062
H6 -1.841 0.541 0.000
H7 -0.883 1.740 0.888
H8 -0.883 1.740 -0.888

Atom - Atom Distances (Å)
  C1 C2 H3 F4 F5 H6 H7 H8
C11.53481.11001.35751.35752.19492.17392.1739
C21.53482.21082.40442.40441.09711.09621.0962
H31.11002.21082.00372.00373.12812.55332.5533
F41.35752.40442.00372.12302.70202.71153.3353
F51.35752.40442.00372.12302.70203.33532.7115
H62.19491.09713.12812.70202.70201.77351.7735
H72.17391.09622.55332.71153.33531.77351.7767
H82.17391.09622.55333.33532.71151.77351.7767

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 111.948 C1 C2 H7 110.327
C1 C2 H8 110.327 C2 C1 H3 112.427
C2 C1 F4 112.326 C2 C1 F5 112.326
H3 C1 F4 108.173 H3 C1 F5 108.173
F4 C1 F5 102.883 H6 C2 H7 107.922
H6 C2 H8 107.922 H7 C2 H8 108.274
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability