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: CCD/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 2A
Energy calculated at CCD/3-21G
 hartrees
Energy at 0K-535.119856
Energy at 298.15K-535.123392
HF Energy-534.879812
Nuclear repulsion energy91.420977
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 CCD/3-21G
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 3231 3142 5.09      
2 A 3112 3026 7.35      
3 A 3079 2994 10.39      
4 A 3014 2930 8.99      
5 A 1566 1523 4.38      
6 A 1552 1509 9.45      
7 A 1484 1443 8.05      
8 A 1307 1271 51.64      
9 A 1116 1085 3.55      
10 A 1077 1047 4.25      
11 A 1025 997 14.57      
12 A 646 628 29.06      
13 A 462 449 34.94      
14 A 320 312 2.03      
15 A 176 171 0.34      

Unscaled Zero Point Vibrational Energy (zpe) 11582.9 cm-1
Scaled (by 0.9723) Zero Point Vibrational Energy (zpe) 11262.0 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 CCD/3-21G
ABC
1.30115 0.17125 0.15626

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/3-21G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.519 0.642 -0.097
C2 1.689 -0.294 0.014
Cl3 -1.162 -0.127 0.007
H4 0.526 1.668 0.254
H5 1.595 -1.116 -0.708
H6 2.618 0.256 -0.193
H7 1.762 -0.734 1.023

Atom - Atom Distances (Å)
  C1 C2 Cl3 H4 H5 H6 H7
C11.50261.85131.08452.14922.13632.1657
C21.50262.85612.29371.09811.09901.1028
Cl31.85132.85612.47613.01453.80453.1538
H41.08452.29372.47613.13322.56332.8085
H52.14921.09813.01453.13321.78741.7807
H62.13631.09903.80452.56331.78741.7862
H72.16571.10283.15382.80851.78071.7862

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 110.495 C1 C2 H6 109.419
C1 C2 H7 111.530 C2 C1 Cl3 116.383
C2 C1 H4 124.098 H5 C2 H6 108.888
H5 C2 H7 108.004 H6 C2 H7 108.438
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability