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All results from a given calculation for HCCF (Fluoroacetylene)

using model chemistry: CCD/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C*V 1Σ
Energy calculated at CCD/Def2TZVPP
 hartrees
Energy at 0K-176.271500
Energy at 298.15K 
HF Energy-175.721541
Nuclear repulsion energy55.640703
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 CCD/Def2TZVPP
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Σ 3515 3515 89.36      
2 Σ 2338 2338 118.24      
3 Σ 1094 1094 80.26      
4 Π 633 633 48.78      
4 Π 633 633 48.78      
5 Π 401 401 1.37      
5 Π 401 401 1.37      

Unscaled Zero Point Vibrational Energy (zpe) 4507.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 4507.2 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 CCD/Def2TZVPP
B
0.32486

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/Def2TZVPP

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.094
C2 0.000 0.000 -1.289
F3 0.000 0.000 1.183
H4 0.000 0.000 -2.349

Atom - Atom Distances (Å)
  C1 C2 F3 H4
C11.19431.27712.2544
C21.19432.47141.0602
F31.27712.47143.5316
H42.25441.06023.5316

picture of Fluoroacetylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H4 180.000 C2 C1 F3 180.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability