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: B2PLYP=FULL/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 B2PLYP=FULL/3-21G*
 hartrees
Energy at 0K-535.956329
Energy at 298.15K-535.959782
HF Energy-535.853081
Nuclear repulsion energy94.216553
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 B2PLYP=FULL/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 3265 3265 5.46      
2 A 3147 3147 8.83      
3 A 3103 3103 11.28      
4 A 3032 3032 12.86      
5 A 1572 1572 4.40      
6 A 1555 1555 10.51      
7 A 1484 1484 7.73      
8 A 1344 1344 37.66      
9 A 1131 1131 4.10      
10 A 1068 1068 6.86      
11 A 1053 1053 19.31      
12 A 709 709 31.13      
13 A 381 381 21.49      
14 A 320 320 23.74      
15 A 152 152 1.34      

Unscaled Zero Point Vibrational Energy (zpe) 11657.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 11657.2 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 B2PLYP=FULL/3-21G*
ABC
1.38954 0.18182 0.16600

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/3-21G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.452 0.608 -0.065
C2 1.659 -0.270 0.009
Cl3 -1.121 -0.129 0.005
H4 0.468 1.663 0.165
H5 1.593 -1.085 -0.720
H6 2.556 0.318 -0.202
H7 1.773 -0.724 1.003

Atom - Atom Distances (Å)
  C1 C2 Cl3 H4 H5 H6 H7
C11.49461.73851.07932.14382.12822.1593
C21.49462.78292.27571.09441.09321.0994
Cl31.73852.78292.39992.96673.70943.1180
H41.07932.27572.39993.09772.51062.8466
H52.14381.09442.96673.09771.77811.7694
H62.12821.09323.70942.51061.77811.7755
H72.15931.09943.11802.84661.76941.7755

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 110.853 C1 C2 H6 109.676
C1 C2 H7 111.796 C2 C1 Cl3 118.613
C2 C1 H4 123.498 H5 C2 H6 108.747
H5 C2 H7 107.524 H6 C2 H7 108.145
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability