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

using model chemistry: QCISD/6-31+G**

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/6-31+G**
 hartrees
Energy at 0K-78.914435
Energy at 298.15K-78.918337
HF Energy-78.607387
Nuclear repulsion energy36.902533
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/6-31+G**
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' 3217 3042 15.71      
2 A' 3129 2958 26.04      
3 A' 3047 2881 28.21      
4 A' 1534 1451 1.54      
5 A' 1518 1435 4.18      
6 A' 1455 1375 0.35      
7 A' 1088 1029 0.01      
8 A' 1018 963 0.59      
9 A' 478 452 66.65      
10 A" 3323 3142 17.10      
11 A" 3174 3000 25.13      
12 A" 1534 1450 4.67      
13 A" 1234 1167 1.42      
14 A" 830 785 1.01      
15 A" 153 145 0.27      

Unscaled Zero Point Vibrational Energy (zpe) 13366.4 cm-1
Scaled (by 0.9454) Zero Point Vibrational Energy (zpe) 12636.6 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/6-31+G**
ABC
3.46223 0.75415 0.70002

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.012 -0.698 0.000
C2 -0.012 0.797 0.000
H3 1.007 -1.105 0.000
H4 -0.514 -1.095 0.884
H5 -0.514 -1.095 -0.884
H6 0.085 1.350 -0.925
H7 0.085 1.350 0.925

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5 H6 H7
C11.49511.09801.09161.09162.24882.2488
C21.49512.15822.14852.14851.08151.0815
H31.09802.15821.75981.75982.78042.7804
H41.09162.14851.75981.76853.10002.5179
H51.09162.14851.75981.76852.51793.1000
H62.24881.08152.78043.10002.51791.8490
H72.24881.08152.78042.51793.10001.8490

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 120.725 C1 C2 H7 120.725
C2 C1 H3 111.757 C2 C1 H4 111.363
C2 C1 H5 111.363 H3 C1 H4 106.965
H3 C1 H5 106.965 H4 C1 H5 108.195
H6 C2 H7 117.492
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability