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: MP2/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 2A2
Energy calculated at MP2/6-311G*
 hartrees
Energy at 0K-116.852147
Energy at 298.15K-116.856467
HF Energy-116.489208
Nuclear repulsion energy65.116558
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 MP2/6-311G*
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 3312 3147 14.39      
2 A1 3207 3048 0.45      
3 A1 3201 3042 14.85      
4 A1 1561 1484 4.11      
5 A1 1317 1251 0.89      
6 A1 1071 1018 0.23      
7 A1 441 419 0.04      
8 A2 790 751 0.00      
9 A2 585 556 0.00      
10 B1 1045 993 31.28      
11 B1 809 769 95.22      
12 B1 557 529 19.64      
13 B2 3309 3145 3.91      
14 B2 3197 3039 9.62      
15 B2 1524 1449 1.12      
16 B2 1439 1368 10.62      
17 B2 1140 1083 0.46      
18 B2 960 913 0.32      

Unscaled Zero Point Vibrational Energy (zpe) 14733.3 cm-1
Scaled (by 0.9503) Zero Point Vibrational Energy (zpe) 14001.0 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 MP2/6-311G*
ABC
1.82449 0.34849 0.29260

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.447
H2 0.000 0.000 1.535
C3 0.000 1.218 -0.197
C4 0.000 -1.218 -0.197
H5 0.000 2.148 0.356
H6 0.000 -2.148 0.356
H7 0.000 1.277 -1.280
H8 0.000 -1.277 -1.280

Atom - Atom Distances (Å)
  C1 H2 C3 C4 H5 H6 H7 H8
C11.08811.37761.37762.15002.15002.14752.1475
H21.08812.11732.11732.45002.45003.09083.0908
C31.37762.11732.43591.08243.41121.08432.7198
C41.37762.11732.43593.41121.08242.71981.0843
H52.15002.45001.08243.41124.29611.85373.7959
H62.15002.45003.41121.08244.29613.79591.8537
H72.14753.09081.08432.71981.85373.79592.5541
H82.14753.09082.71981.08433.79591.85372.5541

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 121.377 C1 C3 H7 120.984
C1 C4 H6 121.377 C1 C4 H8 120.984
H2 C1 C3 117.860 H2 C1 C4 117.860
C3 C1 C4 124.279 H5 C3 H7 117.638
H6 C4 H8 117.638
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability