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: MP3=FULL/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at MP3=FULL/3-21G
 hartrees
Energy at 0K-535.122258
Energy at 298.15K-535.125923
HF Energy-534.885416
Nuclear repulsion energy91.008954
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 MP3=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' 3195 3195 2.36      
2 A' 3169 3169 6.14      
3 A' 1573 1573 2.14      
4 A' 1545 1545 4.33      
5 A' 1269 1269 16.81      
6 A' 1071 1071 12.87      
7 A' 679 679 92.37      
8 A' 529 529 57.30      
9 A' 304 304 12.54      
10 A" 3303 3303 4.95      
11 A" 3239 3239 0.92      
12 A" 1312 1312 0.07      
13 A" 1075 1075 0.32      
14 A" 814 814 3.25      
15 A" 281 281 1.11      

Unscaled Zero Point Vibrational Energy (zpe) 11678.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 11678.5 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 MP3=FULL/3-21G
ABC
1.03879 0.17689 0.16092

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.467 0.898 0.000
C2 0.000 0.947 0.000
Cl3 0.702 -0.902 0.000
H4 -2.006 0.764 0.931
H5 -2.006 0.764 -0.931
H6 0.439 1.368 -0.902
H7 0.439 1.368 0.902

Atom - Atom Distances (Å)
  C1 C2 Cl3 H4 H5 H6 H7
C11.46782.81841.08381.08382.16012.1601
C21.46781.97812.21902.21901.08761.0876
Cl32.81841.97813.31333.31332.45642.4564
H41.08382.21903.31331.86133.11452.5183
H51.08382.21903.31331.86132.51833.1145
H62.16011.08762.45643.11452.51831.8042
H72.16011.08762.45642.51833.11451.8042

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 108.850 C1 C2 H6 114.594
C1 C2 H7 114.594 C2 C1 H4 120.091
C2 C1 H5 120.091 Cl3 C2 H6 102.596
Cl3 C2 H7 102.596 H4 C1 H5 118.345
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability