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All results from a given calculation for C2H2F2 (Ethene, 1,2-difluoro-, (Z)-)

using model chemistry: PBEPBE/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at PBEPBE/cc-pVTZ
 hartrees
Energy at 0K-276.871737
Energy at 298.15K-276.874063
Nuclear repulsion energy112.902557
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 PBEPBE/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 A1 3151 3130 9.75      
2 A1 1708 1696 55.02      
3 A1 1243 1235 33.48      
4 A1 993 986 55.33      
5 A1 224 222 1.77      
6 A2 810 804 0.00      
7 A2 499 495 0.00      
8 B1 743 738 43.80      
9 B2 3128 3107 2.32      
10 B2 1347 1338 28.17      
11 B2 1115 1107 116.77      
12 B2 755 749 26.90      

Unscaled Zero Point Vibrational Energy (zpe) 7857.7 cm-1
Scaled (by 0.9931) Zero Point Vibrational Energy (zpe) 7803.5 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 PBEPBE/cc-pVTZ
ABC
0.70766 0.19138 0.15064

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.666 0.577
C2 0.000 -0.666 0.577
F3 0.000 1.398 -0.551
F4 0.000 -1.398 -0.551
H5 0.000 1.248 1.498
H6 0.000 -1.248 1.498

Atom - Atom Distances (Å)
  C1 C2 F3 F4 H5 H6
C11.33211.34562.35291.08942.1240
C21.33212.35291.34562.12401.0894
F31.34562.35292.79672.05543.3473
F42.35291.34562.79673.34732.0554
H51.08942.12402.05543.34732.4957
H62.12401.08943.34732.05542.4957

picture of Ethene, 1,2-difluoro-, (Z)- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 F4 122.973 C1 C2 H6 122.281
C2 C1 F3 122.973 C2 C1 H5 122.281
F3 C1 H5 114.746 F4 C2 H6 114.746
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.044      
2 C 0.044      
3 F -0.137      
4 F -0.137      
5 H 0.093      
6 H 0.093      


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 2.053 2.053
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.555 0.000 0.000
y 0.000 -21.991 0.000
z 0.000 0.000 -19.805
Traceless
 xyz
x -1.658 0.000 0.000
y 0.000 -0.811 0.000
z 0.000 0.000 2.469
Polar
3z2-r24.937
x2-y2-0.564
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.467 0.000 0.000
y 0.000 5.148 0.000
z 0.000 0.000 3.727


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000