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All results from a given calculation for HCCF (Fluoroacetylene)

using model chemistry: QCISD/6-311+G(3df,2p)

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 QCISD/6-311+G(3df,2p)
 hartrees
Energy at 0K-176.270038
Energy at 298.15K 
HF Energy-175.710047
Nuclear repulsion energy55.621009
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 QCISD/6-311+G(3df,2p)
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 3498 3336 88.91      
2 Σ 2313 2206 120.15      
3 Σ 1085 1035 77.93      
4 Π 618 590 46.23      
4 Π 618 590 46.23      
5 Π 404 386 0.94      
5 Π 404 386 0.94      

Unscaled Zero Point Vibrational Energy (zpe) 4471.0 cm-1
Scaled (by 0.9537) Zero Point Vibrational Energy (zpe) 4264.0 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 QCISD/6-311+G(3df,2p)
B
0.32462

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-311+G(3df,2p)

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 -1.289
F3 0.000 0.000 1.183
H4 0.000 0.000 -2.351

Atom - Atom Distances (Å)
  C1 C2 F3 H4
C11.19601.27632.2574
C21.19602.47231.0614
F31.27632.47233.5337
H42.25741.06143.5337

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