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All results from a given calculation for HCCF (Fluoroacetylene)

using model chemistry: B2PLYP=FULLultrafine/3-21G

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/3-21G
 hartrees
Energy at 0K-175.393396
Energy at 298.15K 
HF Energy-175.287878
Nuclear repulsion energy54.747617
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/3-21G
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 3545 3545 78.20 27.35 0.18 0.31
2 Σ 2331 2331 49.75 19.00 0.29 0.45
3 Σ 1084 1084 42.59 8.13 0.27 0.43
4 Π 713 713 60.66 1.35 0.75 0.86
4 Π 713 713 60.66 1.35 0.75 0.86
5 Π 450 450 0.18 10.37 0.75 0.86
5 Π 450 450 0.18 10.37 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4643.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 4643.1 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/3-21G
B
0.31436

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/3-21G

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.106
C2 0.000 0.000 -1.308
F3 0.000 0.000 1.205
H4 0.000 0.000 -2.366

Atom - Atom Distances (Å)
  C1 C2 F3 H4
C11.20241.31112.2604
C21.20242.51351.0580
F31.31112.51353.5715
H42.26041.05803.5715

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