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All results from a given calculation for HCCF (Fluoroacetylene)

using model chemistry: TPSSh/STO-3G

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 TPSSh/STO-3G
 hartrees
Energy at 0K-174.178730
Energy at 298.15K 
HF Energy-174.178730
Nuclear repulsion energy54.232529
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 TPSSh/STO-3G
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 3699 3699 161.08 24.58 0.28 0.44
2 Σ 2481 2481 17.22 13.89 0.29 0.45
3 Σ 1100 1100 14.79 5.83 0.26 0.41
4 Π 626 626 19.80 0.40 0.75 0.86
4 Π 626 626 19.80 0.40 0.75 0.86
5 Π 340 340 3.08 3.45 0.75 0.86
5 Π 340 340 3.08 3.45 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4606.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 4606.2 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 TPSSh/STO-3G
B
0.30865

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/STO-3G

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.110
C2 0.000 0.000 -1.317
F3 0.000 0.000 1.218
H4 0.000 0.000 -2.395

Atom - Atom Distances (Å)
  C1 C2 F3 H4
C11.20681.32792.2845
C21.20682.53471.0777
F31.32792.53473.6125
H42.28451.07773.6125

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 TPSSh/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.032      
2 C -0.148      
3 F 0.000      
4 H 0.116      


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 -0.002 0.002
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.325 0.000 0.000
y 0.000 0.325 0.000
z 0.000 0.000 3.132


<r2> (average value of r2) Å2
<r2> 38.182
(<r2>)1/2 6.179