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All results from a given calculation for HCCF (Fluoroacetylene)

using model chemistry: CCSD(T)=FULL/TZVP

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(T)=FULL/TZVP
 hartrees
Energy at 0K-176.258123
Energy at 298.15K 
HF Energy-175.710683
Nuclear repulsion energy55.318819
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(T)=FULL/TZVP
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 3353        
2 Σ 2287 2186        
3 Σ 1065 1018        
4 Π 545 521        
4 Π 545 521        
5 Π 302 289        
5 Π 302 289        

Unscaled Zero Point Vibrational Energy (zpe) 4276.3 cm-1
Scaled (by 0.956) Zero Point Vibrational Energy (zpe) 4088.2 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 CCSD(T)=FULL/TZVP
B
0.32105

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)=FULL/TZVP

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.095
C2 0.000 0.000 -1.297
F3 0.000 0.000 1.190
H4 0.000 0.000 -2.358

Atom - Atom Distances (Å)
  C1 C2 F3 H4
C11.20211.28462.2636
C21.20212.48671.0615
F31.28462.48673.5482
H42.26361.06153.5482

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