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All results from a given calculation for HCCF (Fluoroacetylene)

using model chemistry: PBEPBE/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 PBEPBE/cc-pVTZ
 hartrees
Energy at 0K-176.419363
Energy at 298.15K 
HF Energy-176.419363
Nuclear repulsion energy55.298910
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 PBEPBE/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 3421 3397 94.04 24.25 0.32 0.49
2 Σ 2261 2245 126.47 44.63 0.14 0.24
3 Σ 1064 1056 73.06 9.45 0.22 0.36
4 Π 564 560 47.21 0.19 0.75 0.86
4 Π 564 560 47.21 0.19 0.75 0.86
5 Π 372 369 3.55 9.79 0.75 0.86
5 Π 372 369 3.55 9.79 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4308.0 cm-1
Scaled (by 0.9931) Zero Point Vibrational Energy (zpe) 4278.3 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 PBEPBE/cc-pVTZ
B
0.32087

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

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 -1.297
F3 0.000 0.000 1.190
H4 0.000 0.000 -2.365

Atom - Atom Distances (Å)
  C1 C2 F3 H4
C11.20391.28302.2718
C21.20392.48681.0679
F31.28302.48683.5547
H42.27181.06793.5547

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 PBEPBE/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.098      
2 C -0.222      
3 F -0.039      
4 H 0.163      


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 -0.425 0.425
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.030 0.000 0.000
y 0.000 -17.030 0.000
z 0.000 0.000 -12.781
Traceless
 xyz
x -2.125 0.000 0.000
y 0.000 -2.125 0.000
z 0.000 0.000 4.250
Polar
3z2-r28.499
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.142 0.000 0.000
y 0.000 2.142 0.000
z 0.000 0.000 4.869


<r2> (average value of r2) Å2
<r2> 38.231
(<r2>)1/2 6.183