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

using model chemistry: QCISD/6-311G*

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/6-311G*
 hartrees
Energy at 0K-78.900129
Energy at 298.15K-78.903966
HF Energy-78.611187
Nuclear repulsion energy36.787299
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/6-311G*
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' 3149 3015 15.69      
2 A' 3067 2936 27.78      
3 A' 2987 2860 28.21      
4 A' 1515 1450 5.08      
5 A' 1497 1433 2.25      
6 A' 1439 1378 2.67      
7 A' 1080 1034 0.03      
8 A' 1009 966 0.27      
9 A' 451 431 61.34      
10 A" 3251 3112 19.74      
11 A" 3110 2977 25.04      
12 A" 1522 1457 6.23      
13 A" 1221 1169 2.14      
14 A" 822 787 2.00      
15 A" 132 127 0.23      

Unscaled Zero Point Vibrational Energy (zpe) 13125.4 cm-1
Scaled (by 0.9574) Zero Point Vibrational Energy (zpe) 12566.2 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/6-311G*
ABC
3.43639 0.75054 0.69641

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.012 -0.699 0.000
C2 -0.012 0.799 0.000
H3 1.012 -1.109 0.000
H4 -0.515 -1.100 0.888
H5 -0.515 -1.100 -0.888
H6 0.081 1.355 -0.928
H7 0.081 1.355 0.928

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5 H6 H7
C11.49731.10301.09641.09642.25582.2558
C21.49732.16522.15512.15511.08631.0863
H31.10302.16521.76631.76632.79332.7933
H41.09642.15511.76631.77543.11102.5263
H51.09642.15511.76631.77542.52633.1110
H62.25581.08632.79333.11102.52631.8567
H72.25581.08632.79332.52633.11101.8567

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 120.813 C1 C2 H7 120.813
C2 C1 H3 111.855 C2 C1 H4 111.451
C2 C1 H5 111.451 H3 C1 H4 106.848
H3 C1 H5 106.848 H4 C1 H5 108.134
H6 C2 H7 117.434
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability