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: wB97X-D/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at wB97X-D/Def2TZVPP
 hartrees
Energy at 0K-79.161040
Energy at 298.15K-79.164797
HF Energy-79.161040
Nuclear repulsion energy 
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 wB97X-D/Def2TZVPP
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' 3170 3028 14.25      
2 A' 3081 2943 20.71      
3 A' 2991 2857 23.41      
4 A' 1493 1426 3.82      
5 A' 1473 1407 2.67      
6 A' 1406 1343 2.82      
7 A' 1079 1030 0.11      
8 A' 983 939 0.51      
9 A' 471 450 57.58      
10 A" 3276 3129 12.25      
11 A" 3128 2987 18.50      
12 A" 1484 1418 6.11      
13 A" 1199 1145 2.44      
14 A" 822 785 2.01      
15 A" 81 77 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 13067.5 cm-1
Scaled (by 0.9552) Zero Point Vibrational Energy (zpe) 12482.1 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 wB97X-D/Def2TZVPP
ABC
3.47342 0.76444 0.70811

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/Def2TZVPP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.010 -0.691 0.000
C2 -0.010 0.791 0.000
H3 1.011 -1.097 0.000
H4 -0.504 -1.097 0.885
H5 -0.504 -1.097 -0.885
H6 0.060 1.344 -0.926
H7 0.060 1.344 0.926

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5 H6 H7
C11.48171.09911.09121.09122.23692.2369
C21.48172.14672.14222.14221.08071.0807
H31.09912.14671.75401.75402.77902.7790
H41.09122.14221.75401.76923.09092.5057
H51.09122.14221.75401.76922.50573.0909
H62.23691.08072.77903.09092.50571.8511
H72.23691.08072.77902.50573.09091.8511

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 120.808 C1 C2 H7 120.808
C2 C1 H3 111.708 C2 C1 H4 111.839
C2 C1 H5 111.839 H3 C1 H4 106.411
H3 C1 H5 106.411 H4 C1 H5 108.318
H6 C2 H7 117.833
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.187      
2 C -0.285      
3 H 0.086      
4 H 0.080      
5 H 0.080      
6 H 0.113      
7 H 0.113      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.130 -0.281 0.000 0.309
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -15.211 0.172 0.000
y 0.172 -14.312 0.000
z 0.000 0.000 -13.551
Traceless
 xyz
x -1.279 0.172 0.000
y 0.172 0.068 0.000
z 0.000 0.000 1.211
Polar
3z2-r22.421
x2-y2-0.898
xy0.172
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.390 -0.051 0.000
y -0.051 4.374 0.000
z 0.000 0.000 3.704


<r2> (average value of r2) Å2
<r2> 27.625
(<r2>)1/2 5.256