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All results from a given calculation for C3H5 (Allyl radical)

using model chemistry: QCISD/CEP-121G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 2A2
Energy calculated at QCISD/CEP-121G
 hartrees
Energy at 0K-19.562936
Energy at 298.15K-19.566977
HF Energy-19.286196
Nuclear repulsion energy35.294455
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 QCISD/CEP-121G
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 3149 3003 43.84      
2 A1 3058 2916 8.01      
3 A1 3034 2893 18.66      
4 A1 1511 1441 2.39      
5 A1 1245 1187 0.24      
6 A1 1004 958 0.12      
7 A1 419 400 0.01      
8 A2 655 625 0.00      
9 A2 506 483 0.00      
10 B1 908 866 45.92      
11 B1 639 609 89.85      
12 B1 490 467 8.86      
13 B2 3143 2998 13.03      
14 B2 3032 2891 17.50      
15 B2 1494 1425 1.76      
16 B2 1402 1337 2.82      
17 B2 1160 1106 0.21      
18 B2 928 885 0.17      

Unscaled Zero Point Vibrational Energy (zpe) 13887.9 cm-1
Scaled (by 0.9537) Zero Point Vibrational Energy (zpe) 13244.9 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 QCISD/CEP-121G
ABC
1.74034 0.32788 0.27590

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/CEP-121G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.462
H2 0.000 0.000 1.563
C3 0.000 1.260 -0.204
C4 0.000 -1.260 -0.204
H5 0.000 2.203 0.356
H6 0.000 -2.203 0.356
H7 0.000 1.323 -1.301
H8 0.000 -1.323 -1.301

Atom - Atom Distances (Å)
  C1 H2 C3 C4 H5 H6 H7 H8
C11.10071.42521.42522.20592.20592.20422.2042
H21.10072.16992.16992.51242.51243.15483.1548
C31.42522.16992.52011.09673.50821.09932.8061
C41.42522.16992.52013.50821.09672.80611.0993
H52.20592.51241.09673.50824.40661.87653.8958
H62.20592.51243.50821.09674.40663.89581.8765
H72.20423.15481.09932.80611.87653.89582.6450
H82.20423.15482.80611.09933.89581.87652.6450

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 121.475 C1 C3 H7 121.114
C1 C4 H6 121.475 C1 C4 H8 121.114
H2 C1 C3 117.855 H2 C1 C4 117.855
C3 C1 C4 124.290 H5 C3 H7 117.411
H6 C4 H8 117.411
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability