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-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 CCSD/cc-pVDZ
 hartrees
Energy at 0K-537.964299
Energy at 298.15K-537.967906
HF Energy-537.527203
Nuclear repulsion energy93.614855
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-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' 3178 3011 4.17      
2 A' 3125 2960 17.16      
3 A' 1503 1424 0.27      
4 A' 1465 1388 1.74      
5 A' 1270 1203 20.01      
6 A' 1103 1044 6.97      
7 A' 671 635 85.19      
8 A' 593 561 3.23      
9 A' 307 291 10.67      
10 A" 3292 3119 5.14      
11 A" 3192 3024 5.15      
12 A" 1263 1197 0.09      
13 A" 1069 1013 0.96      
14 A" 779 738 0.88      
15 A" 215 204 1.45      

Unscaled Zero Point Vibrational Energy (zpe) 11511.4 cm-1
Scaled (by 0.9473) Zero Point Vibrational Energy (zpe) 10904.8 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 CCSD/cc-pVDZ
ABC
1.07500 0.18975 0.17256

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.484 0.811 0.000
C2 0.000 0.867 0.000
Cl3 0.714 -0.828 0.000
H4 -2.023 0.653 0.940
H5 -2.023 0.653 -0.940
H6 0.404 1.354 -0.900
H7 0.404 1.354 0.900

Atom - Atom Distances (Å)
  C1 C2 Cl3 H4 H5 H6 H7
C11.48472.74181.09551.09552.16092.1609
C21.48471.83992.24122.24121.10041.1004
Cl32.74181.83993.25143.25142.38132.3813
H41.09552.24123.25141.88063.12582.5269
H51.09552.24123.25141.88062.52693.1258
H62.16091.10042.38133.12582.52691.8002
H72.16091.10042.38132.52693.12581.8002

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 110.667 C1 C2 H6 112.575
C1 C2 H7 112.575 C2 C1 H4 119.837
C2 C1 H5 119.837 Cl3 C2 H6 105.390
Cl3 C2 H7 105.390 H4 C1 H5 118.263
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability