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 CHFCHClz ((Z)-1-Chloro-2-fluoroethene)

using model chemistry: QCISD/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at QCISD/TZVP
 hartrees
Energy at 0K-636.517454
Energy at 298.15K-636.519704
HF Energy-635.869358
Nuclear repulsion energy144.774484
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 QCISD/TZVP
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' 3287 3140 7.19      
2 A' 3258 3112 4.67      
3 A' 1741 1663 55.84      
4 A' 1389 1327 23.92      
5 A' 1287 1229 32.21      
6 A' 1094 1045 94.55      
7 A' 823 787 16.22      
8 A' 662 632 21.53      
9 A' 201 192 1.61      
10 A" 851 813 0.21      
11 A" 754 721 44.88      
12 A" 443 423 8.67      

Unscaled Zero Point Vibrational Energy (zpe) 7894.9 cm-1
Scaled (by 0.9553) Zero Point Vibrational Energy (zpe) 7542.0 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 QCISD/TZVP
ABC
0.54876 0.12251 0.10015

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.870 0.000
C2 1.251 0.433 0.000
Cl3 -1.383 -0.178 0.000
F4 1.567 -0.867 0.000
H5 -0.212 1.927 0.000
H6 2.112 1.086 0.000

Atom - Atom Distances (Å)
  C1 C2 Cl3 F4 H5 H6
C11.32561.73552.34001.07802.1231
C21.32562.70431.33812.09161.0805
Cl31.73552.70433.02992.40893.7168
F42.34001.33813.02993.31302.0278
H51.07802.09162.40893.31302.4719
H62.12311.08053.71682.02782.4719

picture of (Z)-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 122.928 C1 C2 H6 123.549
C2 C1 Cl3 123.572 C2 C1 H5 120.619
Cl3 C1 H5 115.809 F4 C2 H6 113.523
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability