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

using model chemistry: CCSD(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 CCSD(T)/3-21G
 hartrees
Energy at 0K-116.106574
Energy at 298.15K-116.110817
HF Energy-115.821686
Nuclear repulsion energy64.306151
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)/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 3174        
2 A1 3113 3083        
3 A1 3102 3073        
4 A1 1559 1545        
5 A1 1285 1273        
6 A1 1036 1026        
7 A1 445 441        
8 A2 759 752        
9 A2 548 543        
10 B1 985 976        
11 B1 770 763        
12 B1 525 520        
13 B2 3200 3170        
14 B2 3107 3077        
15 B2 1532 1518        
16 B2 1459 1445        
17 B2 1168 1157        
18 B2 973 964        

Unscaled Zero Point Vibrational Energy (zpe) 14384.3 cm-1
Scaled (by 0.9906) Zero Point Vibrational Energy (zpe) 14249.1 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)/3-21G
ABC
1.78658 0.33842 0.28453

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(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 -1.289
H8 0.000 -1.302 -1.289

Atom - Atom Distances (Å)
  C1 H2 C3 C4 H5 H6 H7 H8
C11.09451.40041.40042.17982.17982.17542.1754
H21.09452.14202.14202.48362.48363.12173.1217
C31.40042.14202.47781.08933.46081.09172.7649
C41.40042.14202.47783.46081.08932.76491.0917
H52.17982.48361.08933.46084.35501.86133.8479
H62.17982.48363.46081.08934.35503.84791.8613
H72.17543.12171.09172.76491.86133.84792.6043
H82.17543.12172.76491.09173.84791.86132.6043

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 121.716 C1 C3 H7 121.108
C1 C4 H6 121.716 C1 C4 H8 121.108
H2 C1 C3 117.787 H2 C1 C4 117.787
C3 C1 C4 124.426 H5 C3 H7 117.176
H6 C4 H8 117.176
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability