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

using model chemistry: HF/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at HF/Def2TZVPP
 hartrees
Energy at 0K-275.848366
Energy at 298.15K-275.850845
HF Energy-275.848366
Nuclear repulsion energy112.790402
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 HF/Def2TZVPP
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 Ag 3397 3079 0.00      
2 Ag 1924 1744 0.00      
3 Ag 1424 1290 0.00      
4 Ag 1260 1142 0.00      
5 Ag 607 550 0.00      
6 Au 1031 934 80.34      
7 Au 378 343 6.17      
8 Bg 966 876 0.00      
9 Bu 3388 3071 13.80      
10 Bu 1418 1285 31.40      
11 Bu 1277 1157 385.01      
12 Bu 350 317 14.91      

Unscaled Zero Point Vibrational Energy (zpe) 8709.9 cm-1
Scaled (by 0.9064) Zero Point Vibrational Energy (zpe) 7894.7 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 HF/Def2TZVPP
ABC
1.98910 0.13812 0.12915

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/Def2TZVPP

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.327 0.563 0.000
C2 0.327 -0.563 0.000
F3 0.327 1.712 0.000
F4 -0.327 -1.712 0.000
H5 -1.392 0.659 0.000
H6 1.392 -0.659 0.000

Atom - Atom Distances (Å)
  C1 C2 F3 F4 H5 H6
C11.30271.32182.27581.06932.1092
C21.30272.27581.32182.10921.0693
F31.32182.27583.48652.01562.5998
F42.27581.32183.48652.59982.0156
H51.06932.10922.01562.59983.0801
H62.10921.06932.59982.01563.0801

picture of Ethene, 1,2-difluoro-, (E)- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 F4 120.251 C1 C2 H6 125.256
C2 C1 F3 120.251 C2 C1 H5 125.256
F3 C1 H5 114.494 F4 C2 H6 114.494
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.169      
2 C 0.169      
3 F -0.260      
4 F -0.260      
5 H 0.090      
6 H 0.090      


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 -18.820 -2.820 0.000
y -2.820 -26.063 0.000
z 0.000 0.000 -22.381
Traceless
 xyz
x 5.401 -2.820 0.000
y -2.820 -5.462 0.000
z 0.000 0.000 0.061
Polar
3z2-r20.122
x2-y27.242
xy-2.820
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.522 -0.605 0.000
y -0.605 4.585 0.000
z 0.000 0.000 2.576


<r2> (average value of r2) Å2
<r2> 78.580
(<r2>)1/2 8.865