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All results from a given calculation for HCCF (Fluoroacetylene)

using model chemistry: PBEPBE/cc-pVDZ

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-pVDZ
 hartrees
Energy at 0K-176.359935
Energy at 298.15K 
HF Energy-176.359935
Nuclear repulsion energy54.880810
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-pVDZ
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 3444 3424 97.43 28.45 0.24 0.39
2 Σ 2270 2257 107.17 33.15 0.24 0.39
3 Σ 1060 1054 72.27 9.22 0.23 0.37
4 Π 570 567 39.44 0.02 0.75 0.86
4 Π 570 567 39.44 0.02 0.75 0.86
5 Π 368 365 3.34 10.74 0.75 0.86
5 Π 368 365 3.34 10.74 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4324.6 cm-1
Scaled (by 0.9942) Zero Point Vibrational Energy (zpe) 4299.5 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-pVDZ
B
0.31598

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.091
C2 0.000 0.000 -1.308
F3 0.000 0.000 1.198
H4 0.000 0.000 -2.385

Atom - Atom Distances (Å)
  C1 C2 F3 H4
C11.21661.28962.2935
C21.21662.50621.0769
F31.28962.50623.5831
H42.29351.07693.5831

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-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.009      
2 C 0.003      
3 F -0.010      
4 H 0.015      


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 -0.349 0.349
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.750 0.000 0.000
y 0.000 -16.750 0.000
z 0.000 0.000 -12.494
Traceless
 xyz
x -2.128 0.000 0.000
y 0.000 -2.128 0.000
z 0.000 0.000 4.257
Polar
3z2-r28.513
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 1.501 0.000 0.000
y 0.000 1.501 0.000
z 0.000 0.000 4.647


<r2> (average value of r2) Å2
<r2> 38.500
(<r2>)1/2 6.205