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All results from a given calculation for C2H4F2 (1,2-difluoroethane)

using model chemistry: MP3/daug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H anti 1Ag
Energy calculated at MP3/daug-cc-pVTZ
 hartrees
Energy at 0K-277.919387
Energy at 298.15K 
HF Energy-277.040206
Nuclear repulsion energy126.168500
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 MP3/daug-cc-pVTZ
Rotational Constants (cm-1) from geometry optimized at MP3/daug-cc-pVTZ
ABC
1.07340 0.13028 0.12152

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/daug-cc-pVTZ

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.424 0.628 0.000
C2 -0.424 -0.628 0.000
F3 -0.424 1.716 0.000
F4 0.424 -1.716 0.000
H5 1.050 0.671 0.890
H6 1.050 0.671 -0.890
H7 -1.050 -0.671 0.890
H8 -1.050 -0.671 -0.890

Atom - Atom Distances (Å)
  C1 C2 F3 F4 H5 H6 H7 H8
C11.51461.37952.34341.08841.08842.15632.1563
C21.51462.34341.37952.15632.15631.08841.0884
F31.37952.34343.53492.01322.01322.62342.6234
F42.34341.37953.53492.62342.62342.01322.0132
H51.08842.15632.01322.62341.77912.49183.0618
H61.08842.15632.01322.62341.77913.06182.4918
H72.15631.08842.62342.01322.49183.06181.7791
H82.15631.08842.62342.01323.06182.49181.7791

picture of 1,2-difluoroethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 F4 108.047 C1 C2 H7 110.803
C1 C2 H8 110.803 C2 C1 F3 108.047
C2 C1 H5 110.803 C2 C1 H6 110.803
F3 C1 H5 108.748 F3 C1 H6 108.748
F4 C2 H7 108.748 F4 C2 H8 108.748
H5 C1 H6 109.628 H7 C2 H8 109.628
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability