return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for HCCF (Fluoroacetylene)

using model chemistry: MP2/cc-pCVTZ

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 MP2/cc-pCVTZ
 hartrees
Energy at 0K-176.272059
Energy at 298.15K 
HF Energy-175.712871
Nuclear repulsion energy55.425853
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 MP2/cc-pCVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 0 1 1 0.00      
1 0.85     0.00      
1 0     0.00      
1 -0.04     0.00      
1 0     -0.25      
1 0     0.60      
1 0     0.03      
1 0     0.00      
1 0     0.00      

Unscaled Zero Point Vibrational Energy (zpe) 0.4 cm-1
Scaled (by 0.9532) Zero Point Vibrational Energy (zpe) 0.4 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 MP2/cc-pCVTZ
B
0.32222

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/cc-pCVTZ

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.092
C2 0.000 0.000 -1.296
F3 0.000 0.000 1.187
H4 0.000 0.000 -2.355

Atom - Atom Distances (Å)
  C1 C2 F3 H4
C11.20371.27882.2635
C21.20372.48251.0598
F31.27882.48253.5423
H42.26351.05983.5423

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