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: MP2/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 2A
Energy calculated at MP2/6-31G
 hartrees
Energy at 0K-537.654440
Energy at 298.15K-537.658020
HF Energy-537.449174
Nuclear repulsion energy91.955369
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 MP2/6-31G
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 3282 3141 8.40      
2 A 3155 3019 11.03      
3 A 3116 2982 15.22      
4 A 3036 2905 14.04      
5 A 1561 1494 4.67      
6 A 1539 1473 10.04      
7 A 1494 1429 7.20      
8 A 1347 1289 52.36      
9 A 1154 1104 3.14      
10 A 1079 1033 8.81      
11 A 1070 1024 12.38      
12 A 679 649 33.61      
13 A 473 452 37.12      
14 A 332 318 2.26      
15 A 174 167 0.35      

Unscaled Zero Point Vibrational Energy (zpe) 11746.6 cm-1
Scaled (by 0.9568) Zero Point Vibrational Energy (zpe) 11239.1 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 MP2/6-31G
ABC
1.34935 0.17198 0.15744

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.502 0.622 -0.088
C2 1.691 -0.283 0.013
Cl3 -1.158 -0.127 0.007
H4 0.506 1.659 0.228
H5 1.612 -1.116 -0.697
H6 2.600 0.289 -0.218
H7 1.805 -0.714 1.022

Atom - Atom Distances (Å)
  C1 C2 Cl3 H4 H5 H6 H7
C11.49711.82331.08422.15082.12832.1709
C21.49712.85292.28501.09811.09851.1032
Cl31.82332.85292.45063.02473.78763.1864
H41.08422.28502.45063.12802.54232.8198
H52.15081.09813.02473.12801.78351.7761
H62.12831.09853.78762.54231.78351.7818
H72.17091.10323.18642.81981.77611.7818

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 111.007 C1 C2 H6 109.203
C1 C2 H7 112.323 C2 C1 Cl3 118.124
C2 C1 H4 123.768 H5 C2 H6 108.569
H5 C2 H7 107.573 H6 C2 H7 108.051
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability