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

using model chemistry: CISD/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 CISD/CEP-121G
 hartrees
Energy at 0K-19.531451
Energy at 298.15K-19.535627
HF Energy-19.287314
Nuclear repulsion energy35.534439
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 CISD/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 3227 2974 43.13      
2 A1 3136 2891 5.89      
3 A1 3111 2868 20.20      
4 A1 1546 1426 2.74      
5 A1 1279 1179 0.26      
6 A1 1033 952 0.14      
7 A1 431 397 0.01      
8 A2 705 650 0.00      
9 A2 537 495 0.00      
10 B1 959 884 44.87      
11 B1 700 646 98.30      
12 B1 518 477 12.00      
13 B2 3221 2969 12.32      
14 B2 3107 2864 18.99      
15 B2 1526 1407 1.46      
16 B2 1435 1323 4.54      
17 B2 1174 1082 0.00      
18 B2 951 877 0.23      

Unscaled Zero Point Vibrational Energy (zpe) 14297.6 cm-1
Scaled (by 0.9218) Zero Point Vibrational Energy (zpe) 13179.5 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 CISD/CEP-121G
ABC
1.76686 0.33235 0.27973

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.458
H2 0.000 0.000 1.552
C3 0.000 1.251 -0.202
C4 0.000 -1.251 -0.202
H5 0.000 2.188 0.355
H6 0.000 -2.188 0.355
H7 0.000 1.315 -1.293
H8 0.000 -1.315 -1.293

Atom - Atom Distances (Å)
  C1 H2 C3 C4 H5 H6 H7 H8
C11.09411.41461.41462.19082.19082.18952.1895
H21.09412.15452.15452.49422.49423.13393.1339
C31.41462.15452.50281.09023.48461.09262.7887
C41.41462.15452.50283.48461.09022.78871.0926
H52.19082.49421.09023.48464.37681.86503.8718
H62.19082.49423.48461.09024.37683.87181.8650
H72.18953.13391.09262.78871.86503.87182.6303
H82.18953.13392.78871.09263.87181.86502.6303

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 121.465 C1 C3 H7 121.145
C1 C4 H6 121.465 C1 C4 H8 121.145
H2 C1 C3 117.798 H2 C1 C4 117.798
C3 C1 C4 124.403 H5 C3 H7 117.389
H6 C4 H8 117.389
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability