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 C2H2ClF (1-chloro-1-fluoroethylene)

using model chemistry: PBE1PBE/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at PBE1PBE/6-31G*
 hartrees
Energy at 0K-637.062324
Energy at 298.15K-637.064621
HF Energy-637.062324
Nuclear repulsion energy149.437060
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 PBE1PBE/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 A' 3338 3172 0.19      
2 A' 3235 3074 4.63      
3 A' 1766 1679 157.14      
4 A' 1428 1357 5.39      
5 A' 1243 1182 208.57      
6 A' 980 931 27.48      
7 A' 711 676 49.14      
8 A' 438 416 1.11      
9 A' 376 357 0.10      
10 A" 856 814 73.60      
11 A" 730 694 0.49      
12 A" 543 516 0.08      

Unscaled Zero Point Vibrational Energy (zpe) 7821.6 cm-1
Scaled (by 0.9503) Zero Point Vibrational Energy (zpe) 7432.9 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 PBE1PBE/6-31G*
ABC
0.35656 0.16955 0.11491

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.455 0.000
C2 -1.014 1.305 0.000
F3 1.267 0.841 0.000
Cl4 -0.145 -1.262 0.000
H5 -0.815 2.370 0.000
H6 -2.036 0.952 0.000

Atom - Atom Distances (Å)
  C1 C2 F3 Cl4 H5 H6
C11.32311.32481.72342.08092.0958
C21.32312.32842.70991.08381.0812
F31.32482.32842.53342.58333.3055
Cl41.72342.70992.53343.69322.9114
H52.08091.08382.58333.69321.8718
H62.09581.08123.30552.91141.8718

picture of 1-chloro-1-fluoroethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 119.339 C1 C2 H6 120.990
C2 C1 F3 123.121 C2 C1 Cl4 125.116
F3 C1 Cl4 111.763 H5 C2 H6 119.671
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.245      
2 C -0.449      
3 F -0.240      
4 Cl 0.028      
5 H 0.208      
6 H 0.208      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.008 0.807 0.000 1.292
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.271 -1.137 0.000
y -1.137 -26.906 0.000
z 0.000 0.000 -30.103
Traceless
 xyz
x 0.234 -1.137 0.000
y -1.137 2.281 0.000
z 0.000 0.000 -2.515
Polar
3z2-r2-5.030
x2-y2-1.365
xy-1.137
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.623 -0.861 0.000
y -0.861 6.455 0.000
z 0.000 0.000 2.198


<r2> (average value of r2) Å2
<r2> 94.975
(<r2>)1/2 9.745