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All results from a given calculation for HCCF (Fluoroacetylene)

using model chemistry: B2PLYP/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 B2PLYP/6-31G*
 hartrees
Energy at 0K-176.379634
Energy at 298.15K 
HF Energy-176.239170
Nuclear repulsion energy55.189529
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 B2PLYP/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 3545 3365 82.79 28.16 0.21 0.35
2 Σ 2321 2203 92.86 25.60 0.25 0.40
3 Σ 1084 1029 68.95 8.35 0.23 0.38
4 Π 588 558 41.76 0.01 0.75 0.86
4 Π 588 558 41.76 0.01 0.75 0.86
5 Π 364 346 5.92 11.04 0.75 0.86
5 Π 364 346 5.92 11.04 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4427.0 cm-1
Scaled (by 0.9492) Zero Point Vibrational Energy (zpe) 4202.1 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 B2PLYP/6-31G*
B
0.31953

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31G*

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.096
C2 0.000 0.000 -1.300
F3 0.000 0.000 1.193
H4 0.000 0.000 -2.363

Atom - Atom Distances (Å)
  C1 C2 F3 H4
C11.20431.28842.2670
C21.20432.49271.0627
F31.28842.49273.5554
H42.26701.06273.5554

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 B2PLYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.118      
2 C -0.141      
3 F -0.192      
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 -0.626 0.626
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.450 0.000 0.000
y 0.000 -16.450 0.000
z 0.000 0.000 -12.568
Traceless
 xyz
x -1.941 0.000 0.000
y 0.000 -1.941 0.000
z 0.000 0.000 3.882
Polar
3z2-r27.764
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 1.303 0.000 0.000
y 0.000 1.303 0.000
z 0.000 0.000 4.335


<r2> (average value of r2) Å2
<r2> 38.040
(<r2>)1/2 6.168