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

using model chemistry: QCISD/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at QCISD/6-31G(2df,p)
 hartrees
Energy at 0K-78.949914
Energy at 298.15K-78.953781
HF Energy-78.609059
Nuclear repulsion energy36.876457
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 QCISD/6-31G(2df,p)
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' 3200 3031 10.65      
2 A' 3116 2952 20.16      
3 A' 3036 2877 20.30      
4 A' 1516 1436 3.44      
5 A' 1496 1418 1.53      
6 A' 1433 1358 0.59      
7 A' 1078 1021 0.04      
8 A' 1003 951 0.28      
9 A' 459 435 46.12      
10 A" 3304 3131 11.04      
11 A" 3159 2992 17.13      
12 A" 1520 1440 3.56      
13 A" 1217 1153 2.22      
14 A" 817 774 1.47      
15 A" 147 140 0.19      

Unscaled Zero Point Vibrational Energy (zpe) 13250.4 cm-1
Scaled (by 0.9474) Zero Point Vibrational Energy (zpe) 12553.4 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 QCISD/6-31G(2df,p)
ABC
3.45690 0.75337 0.69924

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.013 -0.697 0.000
C2 -0.013 0.798 0.000
H3 1.008 -1.105 0.000
H4 -0.514 -1.099 0.885
H5 -0.514 -1.099 -0.885
H6 0.091 1.350 -0.925
H7 0.091 1.350 0.925

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5 H6 H7
C11.49531.09941.09311.09312.24912.2491
C21.49532.15972.15192.15191.08241.0824
H31.09942.15971.76021.76022.77932.7793
H41.09312.15191.76021.77003.10452.5223
H51.09312.15191.76021.77002.52233.1045
H62.24911.08242.77933.10452.52231.8505
H72.24911.08242.77932.52233.10451.8505

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 120.661 C1 C2 H7 120.661
C2 C1 H3 111.777 C2 C1 H4 111.534
C2 C1 H5 111.534 H3 C1 H4 106.804
H3 C1 H5 106.804 H4 C1 H5 108.126
H6 C2 H7 117.478
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability