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

using model chemistry: QCISD(T)=FULL/aug-cc-pVQZ

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 QCISD(T)=FULL/aug-cc-pVQZ
 hartrees
Energy at 0K-278.152932
Energy at 298.15K 
HF Energy-277.057960
Nuclear repulsion energy126.105688
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)=FULL/aug-cc-pVQZ
Rotational Constants (cm-1) from geometry optimized at QCISD(T)=FULL/aug-cc-pVQZ
ABC
1.07381 0.13020 0.12146

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)=FULL/aug-cc-pVQZ

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.424 0.624 0.000
C2 -0.424 -0.624 0.000
F3 -0.424 1.717 0.000
F4 0.424 -1.717 0.000
H5 1.049 0.668 0.890
H6 1.049 0.668 -0.890
H7 -1.049 -0.668 0.890
H8 -1.049 -0.668 -0.890

Atom - Atom Distances (Å)
  C1 C2 F3 F4 H5 H6 H7 H8
C11.50961.38372.34131.08801.08802.15262.1526
C21.50962.34131.38372.15262.15261.08801.0880
F31.38372.34133.53762.01562.01562.62162.6216
F42.34131.38373.53762.62162.62162.01562.0156
H51.08802.15262.01562.62161.77922.48813.0588
H61.08802.15262.01562.62161.77923.05882.4881
H72.15261.08802.62162.01562.48813.05881.7792
H82.15261.08802.62162.01563.05882.48811.7792

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 107.961 C1 C2 H7 110.884
C1 C2 H8 110.884 C2 C1 F3 107.961
C2 C1 H5 110.884 C2 C1 H6 110.884
F3 C1 H5 108.674 F3 C1 H6 108.674
F4 C2 H7 108.674 F4 C2 H8 108.674
H5 C1 H6 109.694 H7 C2 H8 109.694
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability