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All results from a given calculation for C2H5 (Ethyl radical)

using model chemistry: CISD/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at CISD/Def2TZVPP
 hartrees
Energy at 0K-78.962537
Energy at 298.15K-78.966409
HF Energy-78.630420
Nuclear repulsion energy37.087262
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 CISD/Def2TZVPP
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' 3233 3233 12.06      
2 A' 3141 3141 21.45      
3 A' 3065 3065 24.15      
4 A' 1535 1535 1.99      
5 A' 1520 1520 3.71      
6 A' 1449 1449 0.82      
7 A' 1091 1091 0.02      
8 A' 1016 1016 0.40      
9 A' 472 472 55.06      
10 A" 3337 3337 11.54      
11 A" 3182 3182 20.11      
12 A" 1533 1533 4.92      
13 A" 1236 1236 1.83      
14 A" 831 831 1.19      
15 A" 135 135 0.11      

Unscaled Zero Point Vibrational Energy (zpe) 13388.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 13388.5 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 CISD/Def2TZVPP
ABC
3.49985 0.76136 0.70655

See section I.F.4 to change rotational constant units
Geometric Data calculated at CISD/Def2TZVPP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.011 -0.695 0.000
C2 -0.011 0.794 0.000
H3 1.004 -1.097 0.000
H4 -0.509 -1.092 0.880
H5 -0.509 -1.092 -0.880
H6 0.074 1.343 -0.920
H7 0.074 1.343 0.920

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5 H6 H7
C11.48841.09211.08591.08592.23762.2376
C21.48842.14572.13932.13931.07511.0751
H31.09212.14571.75031.75032.76842.7684
H41.08592.13931.75031.75963.08352.5039
H51.08592.13931.75031.75962.50393.0835
H62.23761.07512.76843.08352.50391.8405
H72.23761.07512.76842.50393.08351.8405

picture of Ethyl radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 120.731 C1 C2 H7 120.731
C2 C1 H3 111.589 C2 C1 H4 111.444
C2 C1 H5 111.444 H3 C1 H4 106.950
H3 C1 H5 106.950 H4 C1 H5 108.227
H6 C2 H7 117.724
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability