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: CCSD/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 2A
Energy calculated at CCSD/TZVP
 hartrees
Energy at 0K-538.009212
Energy at 298.15K-538.012827
HF Energy-537.554057
Nuclear repulsion energy94.575970
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 CCSD/TZVP
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 3256 3107 8.93      
2 A 3151 3007 14.20      
3 A 3109 2968 16.38      
4 A 3032 2893 20.34      
5 A 1508 1440 2.28      
6 A 1487 1419 8.10      
7 A 1448 1382 4.18      
8 A 1342 1281 41.52      
9 A 1136 1084 2.64      
10 A 1061 1012 16.64      
11 A 1035 988 1.01      
12 A 745 711 27.32      
13 A 458 438 26.89      
14 A 339 324 2.90      
15 A 183 175 0.35      

Unscaled Zero Point Vibrational Energy (zpe) 11645.2 cm-1
Scaled (by 0.9544) Zero Point Vibrational Energy (zpe) 11114.2 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 CCSD/TZVP
ABC
1.39440 0.18355 0.16764

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD/TZVP

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.452 0.608 -0.083
C2 1.649 -0.270 0.011
Cl3 -1.115 -0.128 0.007
H4 0.467 1.646 0.210
H5 1.582 -1.099 -0.696
H6 2.547 0.308 -0.211
H7 1.759 -0.700 1.014

Atom - Atom Distances (Å)
  C1 C2 Cl3 H4 H5 H6 H7
C11.48701.73421.07952.13652.12012.1495
C21.48702.76802.26011.09161.09131.0970
Cl31.73422.76802.38692.95163.69513.0987
H41.07952.26012.38693.09852.50862.7960
H52.13651.09162.95163.09851.77421.7651
H62.12011.09133.69512.50861.77421.7721
H72.14951.09703.09872.79601.76511.7721

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 110.969 C1 C2 H6 109.678
C1 C2 H7 111.692 C2 C1 Cl3 118.274
C2 C1 H4 122.636 H5 C2 H6 108.732
H5 C2 H7 107.509 H6 C2 H7 108.159
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability