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: CCSD=FULL/daug-cc-pVTZ

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 CCSD=FULL/daug-cc-pVTZ
 hartrees
Energy at 0K-176.334871
Energy at 298.15K 
HF Energy-175.716127
Nuclear repulsion energy55.829472
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 CCSD=FULL/daug-cc-pVTZ
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 3479 3479 92.00      
2 Σ 2341 2341 122.03      
3 Σ 1102 1102 78.49      
4 Π 640 640 45.04      
4 Π 640 640 45.04      
5 Π 398 398 0.58      
5 Π 398 398 0.58      

Unscaled Zero Point Vibrational Energy (zpe) 4498.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 4498.9 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 CCSD=FULL/daug-cc-pVTZ
B
0.32704

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD=FULL/daug-cc-pVTZ

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.093
C2 0.000 0.000 -1.285
F3 0.000 0.000 1.179
H4 0.000 0.000 -2.342

Atom - Atom Distances (Å)
  C1 C2 F3 H4
C11.19201.27132.2488
C21.19202.46331.0568
F31.27132.46333.5201
H42.24881.05683.5201

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