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 CH2CH2Cl (2-chloroethyl radical)

using model chemistry: MP2/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at MP2/aug-cc-pVDZ
 hartrees
Energy at 0K-537.950850
Energy at 298.15K-537.954479
HF Energy-537.534153
Nuclear repulsion energy93.751696
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 MP2/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' 3210 3078 3.14      
2 A' 3133 3004 11.72      
3 A' 1499 1438 0.09      
4 A' 1466 1406 3.08      
5 A' 1256 1204 17.66      
6 A' 1113 1068 9.15      
7 A' 676 648 95.25      
8 A' 604 579 2.95      
9 A' 310 297 12.10      
10 A" 3333 3197 2.56      
11 A" 3208 3077 1.63      
12 A" 1262 1211 0.27      
13 A" 1070 1026 0.80      
14 A" 781 749 0.79      
15 A" 217 208 1.51      

Unscaled Zero Point Vibrational Energy (zpe) 11568.7 cm-1
Scaled (by 0.959) Zero Point Vibrational Energy (zpe) 11094.4 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 MP2/aug-cc-pVDZ
ABC
1.07189 0.19074 0.17326

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/aug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.478 0.805 0.000
C2 0.000 0.874 0.000
Cl3 0.711 -0.829 0.000
H4 -2.015 0.660 0.937
H5 -2.015 0.660 -0.937
H6 0.408 1.348 -0.901
H7 0.408 1.348 0.901

Atom - Atom Distances (Å)
  C1 C2 Cl3 H4 H5 H6 H7
C11.47932.73121.08991.08992.15912.1591
C21.47931.84502.23282.23281.09681.0968
Cl32.73121.84503.24443.24442.37552.3755
H41.08992.23283.24441.87353.11822.5195
H51.08992.23283.24441.87352.51953.1182
H62.15911.09682.37553.11822.51951.8016
H72.15911.09682.37552.51953.11821.8016

picture of 2-chloroethyl radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 Cl3 110.001 C1 C2 H6 113.051
C1 C2 H7 113.051 C2 C1 H4 119.938
C2 C1 H5 119.938 Cl3 C2 H6 104.829
Cl3 C2 H7 104.829 H4 C1 H5 118.524
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability