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: B3PW91/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 2A2
Energy calculated at B3PW91/6-31G**
 hartrees
Energy at 0K-117.221427
Energy at 298.15K-117.225667
HF Energy-117.221427
Nuclear repulsion energy64.876117
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 B3PW91/6-31G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3273 3137 18.54      
2 A1 3174 3042 2.59      
3 A1 3161 3029 16.61      
4 A1 1529 1465 2.16      
5 A1 1278 1224 0.84      
6 A1 1043 1000 0.11      
7 A1 422 405 0.02      
8 A2 778 745 0.00      
9 A2 552 529 0.00      
10 B1 1011 969 17.02      
11 B1 802 769 75.95      
12 B1 532 509 13.18      
13 B2 3271 3134 5.12      
14 B2 3167 3035 9.02      
15 B2 1526 1463 0.11      
16 B2 1423 1364 5.87      
17 B2 1219 1168 0.00      
18 B2 934 895 0.10      

Unscaled Zero Point Vibrational Energy (zpe) 14546.7 cm-1
Scaled (by 0.9584) Zero Point Vibrational Energy (zpe) 13941.6 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 B3PW91/6-31G**
ABC
1.83011 0.34420 0.28971

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G**

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 1.533
C3 0.000 1.228 -0.196
C4 0.000 -1.228 -0.196
H5 0.000 2.158 0.361
H6 0.000 -2.158 0.361
H7 0.000 1.296 -1.280
H8 0.000 -1.296 -1.280

Atom - Atom Distances (Å)
  C1 H2 C3 C4 H5 H6 H7 H8
C11.09011.38441.38442.16002.16002.15632.1563
H21.09012.12092.12092.45602.45603.09773.0977
C31.38442.12092.45631.08453.43221.08652.7472
C41.38442.12092.45633.43221.08452.74721.0865
H52.16002.45601.08453.43224.31691.85453.8248
H62.16002.45603.43221.08454.31693.82481.8545
H72.15633.09771.08652.74721.85453.82482.5921
H82.15633.09772.74721.08653.82481.85452.5921

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 121.584 C1 C3 H7 121.071
C1 C4 H6 121.584 C1 C4 H8 121.071
H2 C1 C3 117.488 H2 C1 C4 117.488
C3 C1 C4 125.024 H5 C3 H7 117.345
H6 C4 H8 117.345
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.055      
2 H 0.119      
3 C -0.286      
4 C -0.286      
5 H 0.129      
6 H 0.129      
7 H 0.126      
8 H 0.126      


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 0.059 0.059
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.507 0.000 0.000
y 0.000 -17.345 0.000
z 0.000 0.000 -17.214
Traceless
 xyz
x -4.227 0.000 0.000
y 0.000 2.015 0.000
z 0.000 0.000 2.212
Polar
3z2-r24.423
x2-y2-4.162
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.883 0.000 0.000
y 0.000 7.436 0.000
z 0.000 0.000 4.610


<r2> (average value of r2) Å2
<r2> 49.979
(<r2>)1/2 7.070