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All results from a given calculation for HCCF (Fluoroacetylene)

using model chemistry: QCISD/aug-cc-pVTZ

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/aug-cc-pVTZ
 hartrees
Energy at 0K-176.282767
Energy at 298.15K 
HF Energy-175.714696
Nuclear repulsion energy55.527386
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/aug-cc-pVTZ
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 3502 3371 88.91      
2 Σ 2314 2227 118.09      
3 Σ 1084 1043 77.28      
4 Π 616 593 44.10      
4 Π 616 593 44.10      
5 Π 394 379 0.82      
5 Π 394 379 0.82      

Unscaled Zero Point Vibrational Energy (zpe) 4459.7 cm-1
Scaled (by 0.9624) Zero Point Vibrational Energy (zpe) 4292.0 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/aug-cc-pVTZ
B
0.32350

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/aug-cc-pVTZ

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 -1.292
F3 0.000 0.000 1.185
H4 0.000 0.000 -2.351

Atom - Atom Distances (Å)
  C1 C2 F3 H4
C11.19701.27992.2569
C21.19702.47691.0599
F31.27992.47693.5368
H42.25691.05993.5368

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