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

using model chemistry: QCISD(T)/3-21G

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)/3-21G
 hartrees
Energy at 0K-116.106929
Energy at 298.15K-116.111170
HF Energy-115.821664
Nuclear repulsion energy64.293447
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)/3-21G
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 3204 3056        
2 A1 3112 2968        
3 A1 3101 2958        
4 A1 1559 1487        
5 A1 1284 1225        
6 A1 1035 987        
7 A1 444 424        
8 A2 757 722        
9 A2 548 522        
10 B1 985 939        
11 B1 769 733        
12 B1 525 500        
13 B2 3199 3051        
14 B2 3106 2962        
15 B2 1532 1461        
16 B2 1459 1391        
17 B2 1169 1115        
18 B2 972 927        

Unscaled Zero Point Vibrational Energy (zpe) 14379.7 cm-1
Scaled (by 0.9537) Zero Point Vibrational Energy (zpe) 13713.9 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)/3-21G
ABC
1.78598 0.33826 0.28440

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)/3-21G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.453
H2 0.000 0.000 1.548
C3 0.000 1.239 -0.200
C4 0.000 -1.239 -0.200
H5 0.000 2.178 0.353
H6 0.000 -2.178 0.353
H7 0.000 1.302 -1.290
H8 0.000 -1.302 -1.290

Atom - Atom Distances (Å)
  C1 H2 C3 C4 H5 H6 H7 H8
C11.09451.40081.40082.18022.18022.17572.1757
H21.09452.14232.14232.48402.48403.12203.1220
C31.40082.14232.47851.08933.46151.09172.7654
C41.40082.14232.47853.46151.08932.76541.0917
H52.18022.48401.08933.46154.35571.86153.8484
H62.18022.48403.46151.08934.35573.84841.8615
H72.17573.12201.09172.76541.86153.84842.6046
H82.17573.12202.76541.09173.84841.86152.6046

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 121.715 C1 C3 H7 121.100
C1 C4 H6 121.715 C1 C4 H8 121.100
H2 C1 C3 117.788 H2 C1 C4 117.788
C3 C1 C4 124.425 H5 C3 H7 117.185
H6 C4 H8 117.185
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability