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All results from a given calculation for HCCF (Fluoroacetylene)

using model chemistry: MP3/6-31+G**

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 MP3/6-31+G**
 hartrees
Energy at 0K-176.071312
Energy at 298.15K 
HF Energy-175.643394
Nuclear repulsion energy55.187880
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 MP3/6-31+G**
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 3590 3341 80.98      
2 Σ 2387 2221 82.87      
3 Σ 1093 1017 73.77      
4 Π 607 565 42.18      
4 Π 607 565 42.18      
5 Π 371 346 6.47      
5 Π 371 346 6.47      

Unscaled Zero Point Vibrational Energy (zpe) 4513.2 cm-1
Scaled (by 0.9305) Zero Point Vibrational Energy (zpe) 4199.5 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 MP3/6-31+G**
B
0.31951

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/6-31+G**

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.096
C2 0.000 0.000 -1.298
F3 0.000 0.000 1.192
H4 0.000 0.000 -2.358

Atom - Atom Distances (Å)
  C1 C2 F3 H4
C11.20201.28832.2612
C21.20202.49031.0591
F31.28832.49033.5494
H42.26121.05913.5494

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