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: CCSD/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at CCSD/cc-pVTZ
 hartrees
Energy at 0K-538.115349
Energy at 298.15K-538.118987
HF Energy-537.566881
Nuclear repulsion energy94.325155
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 CCSD/cc-pVTZ
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' 3181 2994 3.66      
2 A' 3129 2945 13.27      
3 A' 1522 1433 0.48      
4 A' 1489 1401 2.79      
5 A' 1280 1205 16.63      
6 A' 1102 1037 7.52      
7 A' 681 641 90.73      
8 A' 601 566 2.91      
9 A' 309 291 10.74      
10 A" 3290 3097 4.16      
11 A" 3189 3002 2.94      
12 A" 1281 1206 0.18      
13 A" 1081 1017 0.84      
14 A" 788 742 0.84      
15 A" 218 206 1.39      

Unscaled Zero Point Vibrational Energy (zpe) 11570.8 cm-1
Scaled (by 0.9412) Zero Point Vibrational Energy (zpe) 10890.5 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 CCSD/cc-pVTZ
ABC
1.09484 0.19224 0.17480

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.470 0.806 0.000
C2 0.000 0.865 0.000
Cl3 0.707 -0.826 0.000
H4 -2.005 0.668 0.927
H5 -2.005 0.668 -0.927
H6 0.402 1.340 -0.889
H7 0.402 1.340 0.889

Atom - Atom Distances (Å)
  C1 C2 Cl3 H4 H5 H6 H7
C11.47152.72171.07941.07942.14002.1400
C21.47151.83332.21782.21781.08461.0846
Cl32.72171.83333.23263.23262.36092.3609
H41.07942.21783.23261.85493.08912.4992
H51.07942.21783.23261.85492.49923.0891
H62.14001.08462.36093.08912.49921.7772
H72.14001.08462.36092.49923.08911.7772

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 110.408 C1 C2 H6 112.820
C1 C2 H7 112.820 C2 C1 H4 120.002
C2 C1 H5 120.002 Cl3 C2 H6 105.108
Cl3 C2 H7 105.108 H4 C1 H5 118.460
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability