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All results from a given calculation for HCCF (Fluoroacetylene)

using model chemistry: G4

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 G4
 hartrees
Energy at 0K-176.487705
Energy at 298.15K-176.483467
HF Energy-176.553740
Nuclear repulsion energy55.785903
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 B3LYP/6-31G(2df,p)
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 3510 3387 93.98 24.97 0.22 0.36
2 Σ 2367 2284 105.11 31.68 0.20 0.33
3 Σ 1108 1069 70.04 8.90 0.21 0.35
4 Π 597 576 47.09 0.00 0.75 0.86
4 Π 597 576 47.09 0.00 0.75 0.86
5 Π 430 415 4.75 8.54 0.75 0.86
5 Π 430 415 4.75 8.54 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4519.4 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 4361.2 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 B3LYP/6-31G(2df,p)
B
0.32647

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G(2df,p)

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.092
C2 0.000 0.000 -1.286
F3 0.000 0.000 1.179
H4 0.000 0.000 -2.346

Atom - Atom Distances (Å)
  C1 C2 F3 H4
C11.19371.27152.2541
C21.19372.46521.0604
F31.27152.46523.5256
H42.25411.06043.5256

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
Charges from optimized geometry at B3LYP/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.306      
2 C -0.536      
3 F 0.014      
4 H 0.215      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -0.467 0.467
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000


<r2> (average value of r2) Å2
<r2> 37.419
(<r2>)1/2 6.117