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

using model chemistry: MP2/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at MP2/3-21G
 hartrees
Energy at 0K-78.328167
Energy at 298.15K-78.332066
HF Energy-78.163257
Nuclear repulsion energy36.680375
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 MP2/3-21G
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' 3204 3059 12.64      
2 A' 3116 2974 21.22      
3 A' 3045 2906 17.86      
4 A' 1589 1517 5.55      
5 A' 1557 1486 0.63      
6 A' 1500 1432 3.66      
7 A' 1064 1015 0.92      
8 A' 1027 980 0.11      
9 A' 454 433 55.41      
10 A" 3313 3162 16.11      
11 A" 3154 3011 17.81      
12 A" 1599 1527 4.64      
13 A" 1268 1210 2.89      
14 A" 864 825 3.32      
15 A" 151 145 0.35      

Unscaled Zero Point Vibrational Energy (zpe) 13452.5 cm-1
Scaled (by 0.9545) Zero Point Vibrational Energy (zpe) 12840.4 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 MP2/3-21G
ABC
3.42894 0.74212 0.68969

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.013 -0.706 0.000
C2 -0.013 0.805 0.000
H3 1.010 -1.112 0.000
H4 -0.522 -1.097 0.888
H5 -0.522 -1.097 -0.888
H6 0.097 1.354 -0.927
H7 0.097 1.354 0.927

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5 H6 H7
C11.51121.10091.09521.09522.26142.2614
C21.51122.17332.16012.16011.08291.0829
H31.10092.17331.77021.77022.78792.7879
H41.09522.16011.77021.77563.11192.5281
H51.09522.16011.77021.77562.52813.1119
H62.26141.08292.78793.11192.52811.8544
H72.26141.08292.78792.52813.11191.8544

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 120.423 C1 C2 H7 120.423
C2 C1 H3 111.649 C2 C1 H4 110.932
C2 C1 H5 110.932 H3 C1 H4 107.424
H3 C1 H5 107.424 H4 C1 H5 108.311
H6 C2 H7 117.795
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability