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

using model chemistry: HF/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at HF/3-21G*
 hartrees
Energy at 0K-78.163647
Energy at 298.15K-78.167519
HF Energy-78.163647
Nuclear repulsion energy36.908596
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 HF/3-21G*
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' 3292 2971 15.76      
2 A' 3220 2906 28.27      
3 A' 3153 2846 26.62      
4 A' 1660 1498 6.75      
5 A' 1596 1441 1.55      
6 A' 1574 1421 4.17      
7 A' 1110 1002 1.12      
8 A' 1045 944 0.06      
9 A' 438 395 57.69      
10 A" 3396 3066 21.08      
11 A" 3252 2935 23.02      
12 A" 1665 1503 5.44      
13 A" 1319 1190 3.89      
14 A" 895 808 2.97      
15 A" 131 118 0.35      

Unscaled Zero Point Vibrational Energy (zpe) 13872.5 cm-1
Scaled (by 0.9026) Zero Point Vibrational Energy (zpe) 12521.3 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 HF/3-21G*
ABC
3.49502 0.74810 0.69543

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.012 -0.704 0.000
C2 -0.012 0.803 0.000
H3 1.003 -1.100 0.000
H4 -0.513 -1.095 0.879
H5 -0.513 -1.095 -0.879
H6 0.083 1.347 -0.921
H7 0.083 1.347 0.921

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5 H6 H7
C11.50751.08941.08431.08432.25012.2501
C21.50752.15712.15082.15081.07341.0734
H31.08942.15711.75231.75232.77152.7715
H41.08432.15081.75231.75703.09102.5136
H51.08432.15081.75231.75702.51363.0910
H62.25011.07342.77153.09102.51361.8418
H72.25011.07342.77152.51363.09101.8418

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 120.409 C1 C2 H7 120.409
C2 C1 H3 111.312 C2 C1 H4 111.121
C2 C1 H5 111.121 H3 C1 H4 107.438
H3 C1 H5 107.438 H4 C1 H5 108.238
H6 C2 H7 118.161
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.650      
2 C -0.382      
3 H 0.212      
4 H 0.212      
5 H 0.212      
6 H 0.198      
7 H 0.198      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.147 -0.130 0.000 0.196
CHELPG 0.121 -0.112 0.000 0.165
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -15.255 0.231 0.000
y 0.231 -14.226 0.000
z 0.000 0.000 -13.731
Traceless
 xyz
x -1.277 0.231 0.000
y 0.231 0.267 0.000
z 0.000 0.000 1.010
Polar
3z2-r22.020
x2-y2-1.029
xy0.231
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.076 0.031 0.000
y 0.031 3.187 0.000
z 0.000 0.000 2.975


<r2> (average value of r2) Å2
<r2> 27.865
(<r2>)1/2 5.279