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 CHClCH3 (1-chloroethyl radical)

using model chemistry: QCISD/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 2A
Energy calculated at QCISD/6-311G**
 hartrees
Energy at 0K-538.004693
Energy at 298.15K-538.008278
HF Energy-537.548216
Nuclear repulsion energy94.633866
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 QCISD/6-311G**
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 3238 3089 10.12      
2 A 3138 2994 14.07      
3 A 3096 2954 17.80      
4 A 3019 2881 20.91      
5 A 1504 1435 2.27      
6 A 1488 1420 7.34      
7 A 1437 1371 4.72      
8 A 1339 1277 39.68      
9 A 1136 1083 2.98      
10 A 1062 1013 17.33      
11 A 1025 978 0.51      
12 A 755 720 25.44      
13 A 439 419 27.35      
14 A 331 316 4.26      
15 A 179 171 0.46      

Unscaled Zero Point Vibrational Energy (zpe) 11592.1 cm-1
Scaled (by 0.9541) Zero Point Vibrational Energy (zpe) 11060.0 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 QCISD/6-311G**
ABC
1.38973 0.18404 0.16800

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-311G**

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.444 0.608 -0.081
C2 1.650 -0.268 0.011
Cl3 -1.113 -0.130 0.007
H4 0.457 1.653 0.205
H5 1.587 -1.095 -0.706
H6 2.550 0.317 -0.204
H7 1.756 -0.708 1.015

Atom - Atom Distances (Å)
  C1 C2 Cl3 H4 H5 H6 H7
C11.49341.72511.08332.14392.12982.1572
C21.49342.76612.26981.09581.09511.1009
Cl31.72512.76612.38322.95463.69633.0951
H41.08332.26982.38323.10752.51712.8134
H52.14391.09582.95463.10751.78101.7718
H62.12981.09513.69632.51711.78101.7791
H72.15721.10093.09512.81341.77181.7791

picture of 1-chloroethyl radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 110.857 C1 C2 H6 109.773
C1 C2 H7 111.616 C2 C1 Cl3 118.326
C2 C1 H4 122.698 H5 C2 H6 108.758
H5 C2 H7 107.526 H6 C2 H7 108.215
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability