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All results from a given calculation for C2F2 (difluoroacetylene)

using model chemistry: wB97X-D/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D*H 1Σg
Energy calculated at wB97X-D/aug-cc-pVTZ
 hartrees
Energy at 0K-275.772414
Energy at 298.15K-275.771473
HF Energy-275.772414
Nuclear repulsion energy95.532281
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 wB97X-D/aug-cc-pVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Σg 2583 2471 0.00      
2 Σg 814 778 0.00      
3 Σu 1397 1336 356.15      
4 Πg 367 351 0.00      
4 Πg 367 351 0.00      
5 Πu 293 280 0.02      
5 Πu 293 280 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 3056.1 cm-1
Scaled (by 0.9566) Zero Point Vibrational Energy (zpe) 2923.5 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 wB97X-D/aug-cc-pVTZ
B
0.11947

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/aug-cc-pVTZ

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.590
C2 0.000 0.000 -0.590
F3 0.000 0.000 1.870
F4 0.000 0.000 -1.870

Atom - Atom Distances (Å)
  C1 C2 F3 F4
C11.17951.28022.4597
C21.17952.45971.2802
F31.28022.45973.7399
F42.45971.28023.7399

picture of difluoroacetylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 F4 180.000 C2 C1 F3 180.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.262      
2 C 0.262      
3 F -0.262      
4 F -0.262      


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 0.000 0.000
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.226 0.000 0.000
y 0.000 -20.226 0.000
z 0.000 0.000 -20.751
Traceless
 xyz
x 0.262 0.000 0.000
y 0.000 0.262 0.000
z 0.000 0.000 -0.525
Polar
3z2-r2-1.050
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 2.788 0.000 0.000
y 0.000 2.788 0.000
z 0.000 0.000 5.083


<r2> (average value of r2) Å2
<r2> 79.806
(<r2>)1/2 8.933