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All results from a given calculation for HCCF (Fluoroacetylene)

using model chemistry: PBE1PBE/6-31G*

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 PBE1PBE/6-31G*
 hartrees
Energy at 0K-176.346293
Energy at 298.15K 
HF Energy-176.346293
Nuclear repulsion energy55.489313
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 PBE1PBE/6-31G*
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 3540 3364 89.05 25.47 0.20 0.33
2 Σ 2374 2256 106.16 31.12 0.25 0.40
3 Σ 1114 1059 74.09 8.67 0.23 0.37
4 Π 611 581 47.50 0.06 0.75 0.86
4 Π 611 581 47.50 0.06 0.75 0.86
5 Π 404 384 4.46 11.96 0.75 0.86
5 Π 404 384 4.46 11.96 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4529.3 cm-1
Scaled (by 0.9503) Zero Point Vibrational Energy (zpe) 4304.2 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 PBE1PBE/6-31G*
B
0.32309

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/6-31G*

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 -1.292
F3 0.000 0.000 1.186
H4 0.000 0.000 -2.358

Atom - Atom Distances (Å)
  C1 C2 F3 H4
C11.19951.27862.2647
C21.19952.47811.0651
F31.27862.47813.5433
H42.26471.06513.5433

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 PBE1PBE/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.108      
2 C -0.158      
3 F -0.181      
4 H 0.231      


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 -0.528 0.528
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.435 0.000 0.000
y 0.000 -16.435 0.000
z 0.000 0.000 -12.310
Traceless
 xyz
x -2.063 0.000 0.000
y 0.000 -2.063 0.000
z 0.000 0.000 4.125
Polar
3z2-r28.250
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 1.321 0.000 0.000
y 0.000 1.321 0.000
z 0.000 0.000 4.364


<r2> (average value of r2) Å2
<r2> 37.691
(<r2>)1/2 6.139