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: MP3/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at MP3/TZVP
 hartrees
Energy at 0K-537.999393
Energy at 298.15K-538.003078
HF Energy-537.552013
Nuclear repulsion energy94.204814
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 MP3/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' 3227 3018 4.57      
2 A' 3170 2965 15.47      
3 A' 1535 1436 0.15      
4 A' 1502 1405 2.45      
5 A' 1335 1249 28.46      
6 A' 1111 1039 7.94      
7 A' 704 659 100.48      
8 A' 624 583 2.23      
9 A' 315 294 10.99      
10 A" 3340 3124 5.59      
11 A" 3236 3026 4.79      
12 A" 1301 1216 0.01      
13 A" 1108 1037 1.24      
14 A" 802 750 0.54      
15 A" 223 209 2.38      

Unscaled Zero Point Vibrational Energy (zpe) 11766.7 cm-1
Scaled (by 0.9352) Zero Point Vibrational Energy (zpe) 11004.2 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 MP3/TZVP
ABC
1.10147 0.19103 0.17395

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.471 0.817 0.000
C2 0.000 0.864 0.000
Cl3 0.708 -0.830 0.000
H4 -2.004 0.670 0.926
H5 -2.004 0.670 -0.926
H6 0.396 1.343 -0.888
H7 0.396 1.343 0.888

Atom - Atom Distances (Å)
  C1 C2 Cl3 H4 H5 H6 H7
C11.47172.73181.07851.07852.13302.1330
C21.47171.83572.21602.21601.08411.0841
Cl32.73181.83573.23503.23502.36812.3681
H41.07852.21603.23501.85203.08252.4923
H51.07852.21603.23501.85202.49233.0825
H62.13301.08412.36813.08252.49231.7766
H72.13301.08412.36812.49233.08251.7766

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 110.895 C1 C2 H6 112.249
C1 C2 H7 112.249 C2 C1 H4 119.883
C2 C1 H5 119.883 Cl3 C2 H6 105.489
Cl3 C2 H7 105.489 H4 C1 H5 118.325
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability