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All results from a given calculation for HCCF (Fluoroacetylene)

using model chemistry: B2PLYP/6-31+G**

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/6-31+G**
 hartrees
Energy at 0K-176.396310
Energy at 298.15K 
HF Energy-176.252064
Nuclear repulsion energy55.070553
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/6-31+G**
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 3529 3361 96.11 26.85 0.22 0.36
2 Σ 2293 2184 121.64 55.26 0.07 0.14
3 Σ 1068 1017 81.26 9.16 0.22 0.36
4 Π 587 559 58.72 1.73 0.75 0.86
4 Π 587 559 58.72 1.73 0.75 0.86
5 Π 380 362 4.00 16.13 0.75 0.86
5 Π 380 362 4.00 16.13 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4412.0 cm-1
Scaled (by 0.9524) Zero Point Vibrational Energy (zpe) 4202.0 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/6-31+G**
B
0.31812

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

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 -1.303
F3 0.000 0.000 1.196
H4 0.000 0.000 -2.365

Atom - Atom Distances (Å)
  C1 C2 F3 H4
C11.20631.29212.2687
C21.20632.49841.0624
F31.29212.49843.5608
H42.26871.06243.5608

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/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.037      
2 C 0.134      
3 F -0.318      
4 H 0.220      


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 -0.816 0.816
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.206 0.000 0.000
y 0.000 -17.206 0.000
z 0.000 0.000 -13.245
Traceless
 xyz
x -1.981 0.000 0.000
y 0.000 -1.981 0.000
z 0.000 0.000 3.961
Polar
3z2-r27.922
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 1.934 0.000 0.000
y 0.000 1.934 0.000
z 0.000 0.000 4.892


<r2> (average value of r2) Å2
<r2> 38.614
(<r2>)1/2 6.214