return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for CH2CF2 (Ethene, 1,1-difluoro-)

using model chemistry: B2PLYP/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B2PLYP/6-31G*
 hartrees
Energy at 0K-276.818094
Energy at 298.15K-276.820586
HF Energy-276.623620
Nuclear repulsion energy117.241933
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/6-31G*
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 3256 3091 5.04      
2 A1 1808 1716 254.53      
3 A1 1445 1372 3.36      
4 A1 949 900 65.82      
5 A1 544 516 4.49      
6 A2 732 695 0.00      
7 B1 808 767 80.08      
8 B1 624 592 4.00      
9 B2 3357 3187 0.00      
10 B2 1365 1295 217.94      
11 B2 981 931 15.01      
12 B2 438 416 1.11      

Unscaled Zero Point Vibrational Energy (zpe) 8152.7 cm-1
Scaled (by 0.9492) Zero Point Vibrational Energy (zpe) 7738.5 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 B2PLYP/6-31G*
ABC
0.36175 0.34642 0.17696

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.376
C2 0.000 0.000 0.050
H3 0.000 0.936 1.905
H4 0.000 -0.936 1.905
F5 0.000 1.090 -0.687
F6 0.000 -1.090 -0.687

Atom - Atom Distances (Å)
  C1 C2 H3 H4 F5 F6
C11.32701.07461.07462.33362.3336
C21.32702.07812.07811.31531.3153
H31.07462.07811.87112.59673.2895
H41.07462.07811.87113.28952.5967
F52.33361.31532.59673.28952.1796
F62.33361.31533.28952.59672.1796

picture of Ethene, 1,1-difluoro- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 F5 124.051 C1 C2 F6 124.051
C2 C1 H3 119.467 C2 C1 H4 119.467
H3 C1 H4 121.066 F5 C2 F6 111.898
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.472      
2 C 0.614      
3 H 0.183      
4 H 0.183      
5 F -0.254      
6 F -0.254      


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 1.103 1.103
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.989 0.000 0.000
y 0.000 -21.496 0.000
z 0.000 0.000 -20.224
Traceless
 xyz
x -1.129 0.000 0.000
y 0.000 -0.390 0.000
z 0.000 0.000 1.519
Polar
3z2-r23.037
x2-y2-0.493
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.602 0.000 0.000
y 0.000 3.079 0.000
z 0.000 0.000 4.507


<r2> (average value of r2) Å2
<r2> 63.985
(<r2>)1/2 7.999