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All results from a given calculation for C2H5 (Ethyl 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 CS 2A'
Energy calculated at CCD/3-21G
 hartrees
Energy at 0K-78.357047
Energy at 298.15K-78.360905
HF Energy-78.162868
Nuclear repulsion energy36.545117
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' 3147 3060 12.51      
2 A' 3061 2976 23.19      
3 A' 2994 2911 20.52      
4 A' 1568 1524 5.32      
5 A' 1529 1487 0.45      
6 A' 1483 1442 3.45      
7 A' 1050 1021 0.77      
8 A' 1010 982 0.02      
9 A' 449 436 53.48      
10 A" 3249 3159 17.60      
11 A" 3096 3010 19.68      
12 A" 1577 1534 4.46      
13 A" 1247 1213 2.79      
14 A" 851 828 2.92      
15 A" 137 133 0.30      

Unscaled Zero Point Vibrational Energy (zpe) 13223.2 cm-1
Scaled (by 0.9723) Zero Point Vibrational Energy (zpe) 12856.9 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
3.40414 0.73676 0.68456

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.012 -0.709 0.000
C2 -0.012 0.808 0.000
H3 1.015 -1.115 0.000
H4 -0.523 -1.101 0.891
H5 -0.523 -1.101 -0.891
H6 0.088 1.360 -0.931
H7 0.088 1.360 0.931

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5 H6 H7
C11.51661.10471.09921.09922.27092.2709
C21.51662.18032.16772.16771.08731.0873
H31.10472.18031.77701.77702.80262.8026
H41.09922.16771.77701.78183.12262.5361
H51.09922.16771.77701.78182.53613.1226
H62.27091.08732.80263.12262.53611.8628
H72.27091.08732.80262.53613.12261.8628

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 120.515 C1 C2 H7 120.515
C2 C1 H3 111.599 C2 C1 H4 110.923
C2 C1 H5 110.923 H3 C1 H4 107.474
H3 C1 H5 107.474 H4 C1 H5 108.285
H6 C2 H7 117.874
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability