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

using model chemistry: MP2/CEP-121G*

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/CEP-121G*
 hartrees
Energy at 0K-14.085266
Energy at 298.15K-14.089157
HF Energy-13.842622
Nuclear repulsion energy22.454118
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/CEP-121G*
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' 3196 3045 17.64      
2 A' 3122 2974 27.56      
3 A' 3032 2889 28.71      
4 A' 1525 1453 4.42      
5 A' 1511 1440 3.75      
6 A' 1444 1375 1.37      
7 A' 1078 1027 0.02      
8 A' 1004 957 0.36      
9 A' 459 437 71.19      
10 A" 3313 3156 18.93      
11 A" 3169 3019 24.69      
12 A" 1535 1462 6.13      
13 A" 1228 1170 1.57      
14 A" 819 780 1.81      
15 A" 162 154 0.43      

Unscaled Zero Point Vibrational Energy (zpe) 13297.4 cm-1
Scaled (by 0.9528) Zero Point Vibrational Energy (zpe) 12669.8 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/CEP-121G*
ABC
3.43336 0.74614 0.69299

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-121G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.015 -0.703 0.000
C2 -0.015 0.802 0.000
H3 1.009 -1.107 0.000
H4 -0.518 -1.098 0.888
H5 -0.518 -1.098 -0.888
H6 0.101 1.353 -0.927
H7 0.101 1.353 0.927

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5 H6 H7
C11.50541.10091.09451.09452.25832.2583
C21.50542.16702.15722.15721.08451.0845
H31.10092.16701.76691.76692.78192.7819
H41.09452.15721.76691.77543.11202.5282
H51.09452.15721.76691.77542.52823.1120
H62.25831.08452.78193.11202.52821.8545
H72.25831.08452.78192.52823.11201.8545

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 120.507 C1 C2 H7 120.507
C2 C1 H3 111.555 C2 C1 H4 111.157
C2 C1 H5 111.157 H3 C1 H4 107.188
H3 C1 H5 107.188 H4 C1 H5 108.404
H6 C2 H7 117.519
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability