return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: B97D3/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at B97D3/6-311G*
 hartrees
Energy at 0K-79.122276
Energy at 298.15K-79.126022
HF Energy-79.122276
Nuclear repulsion energy36.837244
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 B97D3/6-311G*
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' 3084 3084 24.52      
2 A' 2980 2980 37.15      
3 A' 2882 2882 43.27      
4 A' 1469 1469 5.09      
5 A' 1447 1447 1.53      
6 A' 1385 1385 1.85      
7 A' 1055 1055 0.06      
8 A' 964 964 0.76      
9 A' 453 453 61.97      
10 A" 3181 3181 30.48      
11 A" 3026 3026 34.19      
12 A" 1473 1473 5.55      
13 A" 1176 1176 2.61      
14 A" 804 804 2.61      
15 A" 96 96 0.06      

Unscaled Zero Point Vibrational Energy (zpe) 12737.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12737.1 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 B97D3/6-311G*
ABC
3.43780 0.75571 0.70018

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.011 -0.693 0.000
C2 -0.011 0.795 0.000
H3 1.016 -1.112 0.000
H4 -0.507 -1.105 0.889
H5 -0.507 -1.105 -0.889
H6 0.063 1.355 -0.930
H7 0.063 1.355 0.930

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5 H6 H7
C11.48771.10821.09901.09902.25062.2506
C21.48772.16492.15582.15581.08801.0880
H31.10822.16491.76361.76362.80302.8030
H41.09902.15581.76361.77893.11262.5260
H51.09902.15581.76361.77892.52603.1126
H62.25061.08802.80303.11262.52601.8592
H72.25061.08802.80302.52603.11261.8592

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 121.014 C1 C2 H7 121.014
C2 C1 H3 112.192 C2 C1 H4 112.026
C2 C1 H5 112.026 H3 C1 H4 106.076
H3 C1 H5 106.076 H4 C1 H5 108.060
H6 C2 H7 117.380
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.598      
2 C -0.441      
3 H 0.208      
4 H 0.209      
5 H 0.209      
6 H 0.207      
7 H 0.207      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.130 -0.258 0.000 0.289
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -15.290 0.180 0.000
y 0.180 -14.309 0.000
z 0.000 0.000 -13.594
Traceless
 xyz
x -1.339 0.180 0.000
y 0.180 0.133 0.000
z 0.000 0.000 1.206
Polar
3z2-r22.411
x2-y2-0.982
xy0.180
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.817 -0.039 0.000
y -0.039 4.150 0.000
z 0.000 0.000 3.448


<r2> (average value of r2) Å2
<r2> 27.881
(<r2>)1/2 5.280