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All results from a given calculation for HCCF (Fluoroacetylene)

using model chemistry: B1B95/6-31G(2df,p)

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 B1B95/6-31G(2df,p)
 hartrees
Energy at 0K-176.499456
Energy at 298.15K 
HF Energy-176.499456
Nuclear repulsion energy55.943290
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 B1B95/6-31G(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 3528 3379 94.94 24.83 0.22 0.36
2 Σ 2387 2286 112.02 32.79 0.20 0.33
3 Σ 1126 1079 73.22 8.93 0.21 0.34
4 Π 617 591 49.67 0.05 0.75 0.86
4 Π 617 591 49.67 0.05 0.75 0.86
5 Π 457 438 2.93 8.31 0.75 0.86
5 Π 457 438 2.93 8.31 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4594.6 cm-1
Scaled (by 0.9577) Zero Point Vibrational Energy (zpe) 4400.2 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 B1B95/6-31G(2df,p)
B
0.32841

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31G(2df,p)

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 -1.282
F3 0.000 0.000 1.175
H4 0.000 0.000 -2.342

Atom - Atom Distances (Å)
  C1 C2 F3 H4
C11.19171.26612.2513
C21.19172.45781.0597
F31.26612.45783.5174
H42.25131.05973.5174

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 B1B95/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.327      
2 C -0.547      
3 F -0.007      
4 H 0.227      


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 -0.482 0.482
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.335 0.000 0.000
y 0.000 -16.335 0.000
z 0.000 0.000 -12.369
Traceless
 xyz
x -1.983 0.000 0.000
y 0.000 -1.983 0.000
z 0.000 0.000 3.966
Polar
3z2-r27.931
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 1.724 0.000 0.000
y 0.000 1.724 0.000
z 0.000 0.000 4.397


<r2> (average value of r2) Å2
<r2> 37.212
(<r2>)1/2 6.100