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

using model chemistry: QCISD/cc-pVDZ

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/cc-pVDZ
 hartrees
Energy at 0K-78.909499
Energy at 298.15K-78.913355
HF Energy-78.603591
Nuclear repulsion energy36.578202
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/cc-pVDZ
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' 3168 3040 13.05      
2 A' 3093 2967 25.94      
3 A' 3009 2887 27.54      
4 A' 1488 1427 1.44      
5 A' 1472 1412 3.34      
6 A' 1403 1346 0.15      
7 A' 1082 1038 0.05      
8 A' 988 948 0.19      
9 A' 449 430 42.54      
10 A" 3275 3142 14.60      
11 A" 3138 3011 21.73      
12 A" 1483 1423 3.65      
13 A" 1198 1149 1.89      
14 A" 806 773 1.17      
15 A" 151 145 0.15      

Unscaled Zero Point Vibrational Energy (zpe) 13100.6 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 12568.7 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/cc-pVDZ
ABC
3.37340 0.74511 0.69089

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.014 -0.700 0.000
C2 -0.014 0.801 0.000
H3 1.019 -1.112 0.000
H4 -0.520 -1.105 0.895
H5 -0.520 -1.105 -0.895
H6 0.096 1.359 -0.937
H7 0.096 1.359 0.937

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5 H6 H7
C11.50161.11201.10541.10542.26532.2653
C21.50162.17452.16642.16641.09631.0963
H31.11202.17451.78071.78072.79942.7994
H41.10542.16641.78071.79063.13242.5407
H51.10542.16641.78071.79062.54073.1324
H62.26531.09632.79943.13242.54071.8745
H72.26531.09632.79942.54073.13241.8745

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 120.584 C1 C2 H7 120.584
C2 C1 H3 111.741 C2 C1 H4 111.495
C2 C1 H5 111.495 H3 C1 H4 106.841
H3 C1 H5 106.841 H4 C1 H5 108.175
H6 C2 H7 117.515
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability