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All results from a given calculation for HCCF (Fluoroacetylene)

using model chemistry: QCISD/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 QCISD/Def2TZVPP
 hartrees
Energy at 0K-176.277858
Energy at 298.15K 
HF Energy-175.721129
Nuclear repulsion energy55.538704
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/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 3507 3507 87.33      
2 Σ 2314 2314 115.93      
3 Σ 1085 1085 76.80      
4 Π 621 621 48.00      
4 Π 621 621 48.00      
5 Π 386 386 1.70      
5 Π 386 386 1.70      

Unscaled Zero Point Vibrational Energy (zpe) 4460.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 4460.4 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 QCISD/Def2TZVPP
B
0.32364

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/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 -1.291
F3 0.000 0.000 1.185
H4 0.000 0.000 -2.352

Atom - Atom Distances (Å)
  C1 C2 F3 H4
C11.19731.27912.2576
C21.19732.47641.0604
F31.27912.47643.5367
H42.25761.06043.5367

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