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 C3H5 (Allyl radical)

using model chemistry: PBEPBE/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 2A2
Energy calculated at PBEPBE/6-311G*
 hartrees
Energy at 0K-117.111862
Energy at 298.15K-117.116020
HF Energy-117.111862
Nuclear repulsion energy64.601985
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 PBEPBE/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 A1 3173 3140 25.81      
2 A1 3077 3045 6.56      
3 A1 3062 3031 18.28      
4 A1 1479 1463 2.95      
5 A1 1244 1231 1.25      
6 A1 1016 1006 0.14      
7 A1 415 411 0.01      
8 A2 742 734 0.00      
9 A2 530 524 0.00      
10 B1 973 963 23.95      
11 B1 767 759 81.16      
12 B1 512 507 20.29      
13 B2 3170 3137 7.38      
14 B2 3071 3039 11.88      
15 B2 1489 1474 0.86      
16 B2 1386 1372 7.22      
17 B2 1205 1193 0.35      
18 B2 912 903 0.08      

Unscaled Zero Point Vibrational Energy (zpe) 14111.7 cm-1
Scaled (by 0.9896) Zero Point Vibrational Energy (zpe) 13964.9 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 PBEPBE/6-311G*
ABC
1.81784 0.34136 0.28739

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.443
H2 0.000 0.000 1.540
C3 0.000 1.233 -0.196
C4 0.000 -1.233 -0.196
H5 0.000 2.168 0.366
H6 0.000 -2.168 0.366
H7 0.000 1.304 -1.287
H8 0.000 -1.304 -1.287

Atom - Atom Distances (Å)
  C1 H2 C3 C4 H5 H6 H7 H8
C11.09771.38851.38852.16962.16962.16662.1666
H21.09772.12962.12962.46592.46593.11403.1140
C31.38852.12962.46571.09133.44721.09362.7619
C41.38852.12962.46573.44721.09132.76191.0936
H52.16962.46591.09133.44724.33651.86543.8461
H62.16962.46593.44721.09134.33653.84611.8654
H72.16663.11401.09362.76191.86543.84612.6087
H82.16663.11402.76191.09363.84611.86542.6087

picture of Allyl radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 H5 121.615 C1 C3 H7 121.136
C1 C4 H6 121.615 C1 C4 H8 121.136
H2 C1 C3 117.388 H2 C1 C4 117.388
C3 C1 C4 125.224 H5 C3 H7 117.249
H6 C4 H8 117.249
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.170      
2 H 0.187      
3 C -0.425      
4 C -0.425      
5 H 0.211      
6 H 0.211      
7 H 0.205      
8 H 0.205      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 0.076 0.076
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.353 0.000 0.000
y 0.000 -17.815 0.000
z 0.000 0.000 -17.589
Traceless
 xyz
x -4.651 0.000 0.000
y 0.000 2.156 0.000
z 0.000 0.000 2.495
Polar
3z2-r24.989
x2-y2-4.538
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.534 0.000 0.000
y 0.000 8.038 0.000
z 0.000 0.000 4.911


<r2> (average value of r2) Å2
<r2> 50.661
(<r2>)1/2 7.118