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All results from a given calculation for HCCF (Fluoroacetylene)

using model chemistry: CCD/6-31G**

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/6-31G**
 hartrees
Energy at 0K-176.074291
Energy at 298.15K 
HF Energy-175.642986
Nuclear repulsion energy55.082830
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/6-31G**
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 3564 3342 76.01      
2 Σ 2358 2211 79.43      
3 Σ 1081 1013 71.35      
4 Π 603 565 40.84      
4 Π 603 565 40.84      
5 Π 366 343 6.07      
5 Π 366 343 6.07      

Unscaled Zero Point Vibrational Energy (zpe) 4470.5 cm-1
Scaled (by 0.9376) Zero Point Vibrational Energy (zpe) 4191.5 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/6-31G**
B
0.31829

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/6-31G**

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.099
C2 0.000 0.000 -1.301
F3 0.000 0.000 1.196
H4 0.000 0.000 -2.362

Atom - Atom Distances (Å)
  C1 C2 F3 H4
C11.20251.29512.2632
C21.20252.49761.0608
F31.29512.49763.5583
H42.26321.06083.5583

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