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: HF/CEP-121G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HF/CEP-121G*
 hartrees
Energy at 0K-50.658973
Energy at 298.15K-50.661437
HF Energy-50.658973
Nuclear repulsion energy59.442561
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/CEP-121G*
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' 3456 3122 0.86      
2 A' 3346 3023 1.64      
3 A' 1852 1673 199.42      
4 A' 1526 1378 9.24      
5 A' 1322 1194 236.84      
6 A' 1047 946 46.39      
7 A' 758 685 51.52      
8 A' 461 417 2.25      
9 A' 394 356 0.17      
10 A" 994 898 80.98      
11 A" 793 717 0.55      
12 A" 572 517 0.64      

Unscaled Zero Point Vibrational Energy (zpe) 8260.2 cm-1
Scaled (by 0.9034) Zero Point Vibrational Energy (zpe) 7462.3 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/CEP-121G*
ABC
0.36080 0.16895 0.11507

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-121G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.459 0.000
C2 -0.994 1.319 0.000
F3 1.269 0.828 0.000
Cl4 -0.157 -1.263 0.000
H5 -0.781 2.373 0.000
H6 -2.011 0.980 0.000

Atom - Atom Distances (Å)
  C1 C2 F3 Cl4 H5 H6
C11.31441.32151.72912.06782.0778
C21.31442.31522.71451.07541.0727
F31.32152.31522.53102.56723.2838
Cl41.72912.71452.53103.68972.9105
H52.06781.07542.56723.68971.8587
H62.07781.07273.28382.91051.8587

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 119.489 C1 C2 H6 120.681
C2 C1 F3 122.888 C2 C1 Cl4 125.682
F3 C1 Cl4 111.430 H5 C2 H6 119.831
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-121G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.477      
2 C -0.536      
3 F -0.263      
4 Cl -0.121      
5 H 0.217      
6 H 0.226      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.385 0.856 0.000 1.629
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.551 -1.643 0.000
y -1.643 -26.610 0.000
z 0.000 0.000 -30.125
Traceless
 xyz
x -0.183 -1.643 0.000
y -1.643 2.728 0.000
z 0.000 0.000 -2.544
Polar
3z2-r2-5.089
x2-y2-1.941
xy-1.643
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.810 -1.043 0.000
y -1.043 6.580 0.000
z 0.000 0.000 2.839


<r2> (average value of r2) Å2
<r2> 68.168
(<r2>)1/2 8.256