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

using model chemistry: QCISD(T)/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(T)/CEP-121G*
 hartrees
Energy at 0K-19.742937
Energy at 298.15K-19.747007
HF Energy-19.332938
Nuclear repulsion energy35.697604
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(T)/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 3229 3079        
2 A1 3134 2989        
3 A1 3123 2978        
4 A1 1523 1453        
5 A1 1260 1202        
6 A1 1019 972        
7 A1 423 403        
8 A2 663 632        
9 A2 527 503        
10 B1 944 901        
11 B1 656 626        
12 B1 506 482        
13 B2 3226 3077        
14 B2 3119 2975        
15 B2 1507 1437        
16 B2 1403 1338        
17 B2 1162 1108        
18 B2 928 885        

Unscaled Zero Point Vibrational Energy (zpe) 14175.2 cm-1
Scaled (by 0.9537) Zero Point Vibrational Energy (zpe) 13518.9 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(T)/CEP-121G*
ABC
1.76889 0.33754 0.28345

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)/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 1.241 -0.202
C4 0.000 -1.241 -0.202
H5 0.000 2.179 0.353
H6 0.000 -2.179 0.353
H7 0.000 1.297 -1.292
H8 0.000 -1.297 -1.292

Atom - Atom Distances (Å)
  C1 H2 C3 C4 H5 H6 H7 H8
C11.09451.40551.40552.18192.18192.17782.1778
H21.09452.14872.14872.48772.48773.12583.1258
C31.40552.14872.48261.08953.46521.09172.7623
C41.40552.14872.48263.46521.08952.76231.0917
H52.18192.48771.08953.46524.35871.86643.8455
H62.18192.48773.46521.08954.35873.84551.8664
H72.17783.12581.09172.76231.86643.84552.5935
H82.17783.12582.76231.09173.84551.86642.5935

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 121.450 C1 C3 H7 120.887
C1 C4 H6 121.450 C1 C4 H8 120.887
H2 C1 C3 117.975 H2 C1 C4 117.975
C3 C1 C4 124.050 H5 C3 H7 117.663
H6 C4 H8 117.663
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability