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: CCSD(T)/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 CCSD(T)/6-311G*
 hartrees
Energy at 0K-116.913616
Energy at 298.15K-116.917814
HF Energy-116.488959
Nuclear repulsion energy64.552047
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 CCSD(T)/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 3234 3113        
2 A1 3141 3023        
3 A1 3133 3016        
4 A1 1531 1474        
5 A1 1278 1230        
6 A1 1036 998        
7 A1 432 416        
8 A2 736 708        
9 A2 550 529        
10 B1 974 938        
11 B1 741 713        
12 B1 523 504        
13 B2 3231 3110        
14 B2 3131 3014        
15 B2 1516 1459        
16 B2 1423 1370        
17 B2 1182 1137        
18 B2 946 910        

Unscaled Zero Point Vibrational Energy (zpe) 14368.7 cm-1
Scaled (by 0.9626) Zero Point Vibrational Energy (zpe) 13831.3 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 CCSD(T)/6-311G*
ABC
1.79474 0.34174 0.28708

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.452
H2 0.000 0.000 1.545
C3 0.000 1.233 -0.199
C4 0.000 -1.233 -0.199
H5 0.000 2.169 0.355
H6 0.000 -2.169 0.355
H7 0.000 1.293 -1.287
H8 0.000 -1.293 -1.287

Atom - Atom Distances (Å)
  C1 H2 C3 C4 H5 H6 H7 H8
C11.09301.39401.39402.17082.17082.16692.1669
H21.09302.13552.13552.47362.47363.11303.1130
C31.39402.13552.46571.08733.44621.08962.7504
C41.39402.13552.46573.44621.08732.75041.0896
H52.17082.47361.08733.44624.33721.86043.8314
H62.17082.47363.44621.08734.33723.83141.8604
H72.16693.11301.08962.75041.86043.83142.5866
H82.16693.11302.75041.08963.83141.86042.5866

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 121.561 C1 C3 H7 121.006
C1 C4 H6 121.561 C1 C4 H8 121.006
H2 C1 C3 117.825 H2 C1 C4 117.825
C3 C1 C4 124.349 H5 C3 H7 117.434
H6 C4 H8 117.434
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability