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

using model chemistry: HF/CEP-31G*

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/CEP-31G*
 hartrees
Energy at 0K-13.835130
Energy at 298.15K-13.839052
HF Energy-13.835130
Nuclear repulsion energy22.409600
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/CEP-31G*
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' 3312 2974 27.68      
2 A' 3252 2920 65.93      
3 A' 3184 2859 56.42      
4 A' 1611 1447 4.58      
5 A' 1591 1429 1.71      
6 A' 1524 1369 0.38      
7 A' 1111 997 0.37      
8 A' 1067 958 0.67      
9 A' 452 406 76.00      
10 A" 3411 3063 58.53      
11 A" 3285 2950 54.95      
12 A" 1615 1450 3.55      
13 A" 1285 1154 2.08      
14 A" 846 759 0.89      
15 A" 168 151 1.09      

Unscaled Zero Point Vibrational Energy (zpe) 13856.8 cm-1
Scaled (by 0.898) Zero Point Vibrational Energy (zpe) 12443.4 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 HF/CEP-31G*
ABC
3.44085 0.73712 0.68600

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.017 -0.709 0.000
C2 -0.017 0.809 0.000
H3 1.004 -1.110 0.000
H4 -0.523 -1.101 0.885
H5 -0.523 -1.101 -0.885
H6 0.125 1.355 -0.925
H7 0.125 1.355 0.925

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5 H6 H7
C11.51821.09681.09201.09202.26662.2666
C21.51822.17392.16502.16501.08351.0835
H31.09682.17391.76471.76472.77612.7761
H41.09202.16501.76471.76933.11902.5408
H51.09202.16501.76471.76932.54083.1190
H62.26661.08352.77613.11902.54081.8498
H72.26661.08352.77612.54083.11901.8498

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 120.277 C1 C2 H7 120.277
C2 C1 H3 111.453 C2 C1 H4 111.035
C2 C1 H5 111.035 H3 C1 H4 107.463
H3 C1 H5 107.463 H4 C1 H5 108.222
H6 C2 H7 117.209
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.251      
2 C -0.402      
3 H 0.110      
4 H 0.112      
5 H 0.112      
6 H 0.160      
7 H 0.160      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.272 -0.196 0.000 0.335
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -15.067 0.416 0.000
y 0.416 -14.429 0.000
z 0.000 0.000 -13.369
Traceless
 xyz
x -1.168 0.416 0.000
y 0.416 -0.211 0.000
z 0.000 0.000 1.379
Polar
3z2-r22.757
x2-y2-0.638
xy0.416
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.346 -0.002 0.000
y -0.002 3.449 0.000
z 0.000 0.000 2.835


<r2> (average value of r2) Å2
<r2> 25.750
(<r2>)1/2 5.074