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: QCISD(T)=FULL/aug-cc-pVDZ

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(T)=FULL/aug-cc-pVDZ
 hartrees
Energy at 0K-636.513221
Energy at 298.15K-636.515235
HF Energy-635.822408
Nuclear repulsion energy138.444193
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(T)=FULL/aug-cc-pVDZ
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' 3246 3149        
2 A' 3238 3141        
3 A' 1679 1629        
4 A' 1303 1264        
5 A' 1219 1182        
6 A' 1107 1074        
7 A' 869 843        
8 A' 441 428        
9 A' 266 258        
10 A" 884 858        
11 A" 755 733        
12 A" 264 256        

Unscaled Zero Point Vibrational Energy (zpe) 7635.1 cm-1
Scaled (by 0.9701) Zero Point Vibrational Energy (zpe) 7406.8 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(T)=FULL/aug-cc-pVDZ
ABC
1.74712 0.08025 0.07673

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)=FULL/aug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.489 0.000
C2 1.027 -0.379 0.000
Cl3 -1.649 -0.090 0.000
F4 2.310 0.085 0.000
H5 0.126 1.574 0.000
H6 0.954 -1.469 0.000

Atom - Atom Distances (Å)
  C1 C2 Cl3 F4 H5 H6
C11.34531.74772.34501.09222.1786
C21.34532.69161.36402.15161.0923
Cl31.74772.69163.96252.43302.9457
F42.34501.36403.96252.64362.0623
H51.09222.15162.43302.64363.1542
H62.17861.09232.94572.06233.1542

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 119.884 C1 C2 H6 126.386
C2 C1 Cl3 120.413 C2 C1 H5 123.611
Cl3 C1 H5 115.976 F4 C2 H6 113.730
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability