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: B2PLYP=FULLultrafine/aug-cc-pVDZ

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 B2PLYP=FULLultrafine/aug-cc-pVDZ
 hartrees
Energy at 0K-176.420397
Energy at 298.15K 
HF Energy-176.264398
Nuclear repulsion energy55.037050
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 B2PLYP=FULLultrafine/aug-cc-pVDZ
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 3506 3374 98.26 26.50 0.24 0.39
2 Σ 2280 2194 125.98 73.71 0.04 0.07
3 Σ 1054 1014 77.32 10.14 0.18 0.31
4 Π 551 530 45.45 0.30 0.75 0.86
4 Π 551 530 45.45 0.30 0.75 0.86
5 Π 355 341 3.82 8.06 0.75 0.86
5 Π 355 341 3.82 8.06 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4325.2 cm-1
Scaled (by 0.9623) Zero Point Vibrational Energy (zpe) 4162.1 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 B2PLYP=FULLultrafine/aug-cc-pVDZ
B
0.31775

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/aug-cc-pVDZ

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 -1.304
F3 0.000 0.000 1.195
H4 0.000 0.000 -2.373

Atom - Atom Distances (Å)
  C1 C2 F3 H4
C11.21091.28872.2794
C21.21092.49961.0685
F31.28872.49963.5681
H42.27941.06853.5681

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