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

using model chemistry: ROHF/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 ROHF/3-21G*
 hartrees
Energy at 0K-78.160164
Energy at 298.15K-78.164135
HF Energy-78.160164
Nuclear repulsion energy36.923318
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 ROHF/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' 3305 3002 17.16      
2 A' 3224 2929 28.74      
3 A' 3168 2878 25.10      
4 A' 1663 1510 6.95      
5 A' 1607 1460 1.26      
6 A' 1578 1433 4.57      
7 A' 1115 1013 0.89      
8 A' 1050 954 0.03      
9 A' 477 433 54.33      
10 A" 3408 3096 22.82      
11 A" 3254 2956 23.11      
12 A" 1666 1514 5.43      
13 A" 1327 1206 3.74      
14 A" 898 816 3.06      
15 A" 170 154 0.84      

Unscaled Zero Point Vibrational Energy (zpe) 13954.0 cm-1
Scaled (by 0.9085) Zero Point Vibrational Energy (zpe) 12677.2 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 ROHF/3-21G*
ABC
3.48673 0.74865 0.69703

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.019 -0.703 0.000
C2 -0.019 0.805 0.000
H3 0.995 -1.099 0.000
H4 -0.522 -1.092 0.878
H5 -0.522 -1.092 -0.878
H6 0.139 1.338 -0.917
H7 0.139 1.338 0.917

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5 H6 H7
C11.50801.08861.08421.08422.24372.2437
C21.50802.15712.15012.15011.07281.0728
H31.08862.15711.75271.75272.74152.7415
H41.08422.15011.75271.75663.09322.5189
H51.08422.15011.75271.75662.51893.0932
H62.24371.07282.74153.09322.51891.8347
H72.24371.07282.74152.51893.09321.8347

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 119.820 C1 C2 H7 119.820
C2 C1 H3 111.325 C2 C1 H4 111.030
C2 C1 H5 111.030 H3 C1 H4 107.541
H3 C1 H5 107.541 H4 C1 H5 108.211
H6 C2 H7 117.535
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at ROHF/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.648      
2 C -0.385      
3 H 0.211      
4 H 0.212      
5 H 0.212      
6 H 0.199      
7 H 0.199      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.239 -0.143 0.000 0.278
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -15.233 0.369 0.000
y 0.369 -14.283 0.001
z 0.000 0.001 -13.744
Traceless
 xyz
x -1.219 0.369 0.000
y 0.369 0.206 0.001
z 0.000 0.001 1.013
Polar
3z2-r22.027
x2-y2-0.950
xy0.369
xz0.000
yz0.001


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


<r2> (average value of r2) Å2
<r2> 27.838
(<r2>)1/2 5.276