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: MP4=FULL/aug-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 MP4=FULL/aug-cc-pVTZ
 hartrees
Energy at 0K-538.221471
Energy at 298.15K-538.225091
HF Energy-537.568256
Nuclear repulsion energy94.559820
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 MP4=FULL/aug-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' 3196 3098        
2 A' 3113 3017        
3 A' 1521 1474        
4 A' 1484 1438        
5 A' 1267 1229        
6 A' 1106 1072        
7 A' 682 661        
8 A' 603 584        
9 A' 307 298        
10 A" 3275 3175        
11 A" 3161 3064        
12 A" 1281 1242        
13 A" 1071 1038        
14 A" 784 760        
15 A" 209 203        

Unscaled Zero Point Vibrational Energy (zpe) 11529.7 cm-1
Scaled (by 0.9693) Zero Point Vibrational Energy (zpe) 11175.7 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 MP4=FULL/aug-cc-pVTZ
ABC
1.09772 0.19347 0.17588

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.465 0.803 0.000
C2 0.000 0.864 0.000
Cl3 0.705 -0.824 0.000
H4 -1.997 0.667 0.926
H5 -1.997 0.667 -0.926
H6 0.401 1.338 -0.889
H7 0.401 1.338 0.889

Atom - Atom Distances (Å)
  C1 C2 Cl3 H4 H5 H6 H7
C11.46592.71181.07681.07682.13522.1352
C21.46591.82992.21022.21021.08461.0846
Cl32.71181.82993.22213.22212.35812.3581
H41.07682.21023.22211.85213.08192.4908
H51.07682.21023.22211.85212.49083.0819
H62.13521.08462.35813.08192.49081.7783
H72.13521.08462.35812.49083.08191.7783

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 110.243 C1 C2 H6 112.828
C1 C2 H7 112.828 C2 C1 H4 119.956
C2 C1 H5 119.956 Cl3 C2 H6 105.126
Cl3 C2 H7 105.126 H4 C1 H5 118.633
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability