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 CHFCHCl ((E)-1-chloro-2-fluoroethene)

using model chemistry: HF/3-21G*

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/3-21G*
 hartrees
Energy at 0K-632.736047
Energy at 298.15K-632.738315
HF Energy-632.736047
Nuclear repulsion energy140.231798
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/3-21G*
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' 3445 3109 4.11      
2 A' 3442 3107 7.70      
3 A' 1890 1706 25.25      
4 A' 1476 1332 0.71      
5 A' 1378 1244 4.19      
6 A' 1230 1110 131.09      
7 A' 913 824 53.11      
8 A' 475 428 2.22      
9 A' 300 271 9.25      
10 A" 1095 989 67.95      
11 A" 998 901 41.06      
12 A" 303 274 4.88      

Unscaled Zero Point Vibrational Energy (zpe) 8472.1 cm-1
Scaled (by 0.9026) Zero Point Vibrational Energy (zpe) 7646.9 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 HF/3-21G*
ABC
1.87355 0.08171 0.07829

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.470 0.000
C2 1.014 -0.350 0.000
Cl3 -1.633 -0.111 0.000
F4 2.290 0.117 0.000
H5 0.115 1.530 0.000
H6 0.944 -1.414 0.000

Atom - Atom Distances (Å)
  C1 C2 Cl3 F4 H5 H6
C11.30401.73312.31741.06622.1071
C21.30402.65781.35842.08361.0664
Cl31.73312.65783.92962.39752.8875
F42.31741.35843.92962.59412.0379
H51.06622.08362.39752.59413.0582
H62.10711.06642.88752.03793.0582

picture of (E)-1-chloro-2-fluoroethene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 F4 120.997 C1 C2 H6 125.174
C2 C1 Cl3 121.471 C2 C1 H5 122.743
Cl3 C1 H5 115.786 F4 C2 H6 113.829
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.434      
2 C 0.234      
3 Cl 0.010      
4 F -0.380      
5 H 0.303      
6 H 0.267      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.056 -0.304 0.000 0.309
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.937 -1.317 0.000
y -1.317 -26.282 0.000
z 0.000 0.000 -30.771
Traceless
 xyz
x -6.410 -1.317 0.000
y -1.317 6.571 0.000
z 0.000 0.000 -0.162
Polar
3z2-r2-0.324
x2-y2-8.654
xy-1.317
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.397 -0.431 0.000
y -0.431 3.706 0.000
z 0.000 0.000 1.605


<r2> (average value of r2) Å2
<r2> 125.488
(<r2>)1/2 11.202