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

using model chemistry: QCISD/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/3-21G
 hartrees
Energy at 0K-116.099844
Energy at 298.15K-116.104100
HF Energy-115.821880
Nuclear repulsion energy64.367241
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/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 3218 3119 20.46      
2 A1 3127 3031 0.70      
3 A1 3118 3022 14.88      
4 A1 1564 1516 2.08      
5 A1 1290 1250 0.14      
6 A1 1040 1008 0.21      
7 A1 447 433 0.00      
8 A2 762 739 0.00      
9 A2 548 531 0.00      
10 B1 991 961 23.93      
11 B1 778 754 81.83      
12 B1 527 511 13.51      
13 B2 3213 3114 7.03      
14 B2 3121 3024 9.36      
15 B2 1537 1490 1.19      
16 B2 1465 1420 2.91      
17 B2 1175 1139 0.02      
18 B2 975 945 0.24      

Unscaled Zero Point Vibrational Energy (zpe) 14447.6 cm-1
Scaled (by 0.9692) Zero Point Vibrational Energy (zpe) 14002.6 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/3-21G
ABC
1.79187 0.33892 0.28501

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

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 1.238 -0.199
C4 0.000 -1.238 -0.199
H5 0.000 2.175 0.353
H6 0.000 -2.175 0.353
H7 0.000 1.302 -1.288
H8 0.000 -1.302 -1.288

Atom - Atom Distances (Å)
  C1 H2 C3 C4 H5 H6 H7 H8
C11.09301.39901.39902.17772.17772.17342.1734
H21.09302.13932.13932.48062.48063.11813.1181
C31.39902.13932.47601.08823.45791.09052.7634
C41.39902.13932.47603.45791.08822.76341.0905
H52.17772.48061.08823.45794.35081.85923.8452
H62.17772.48063.45791.08824.35083.84521.8592
H72.17343.11811.09052.76341.85923.84522.6039
H82.17343.11812.76341.09053.84521.85922.6039

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 121.718 C1 C3 H7 121.122
C1 C4 H6 121.718 C1 C4 H8 121.122
H2 C1 C3 117.760 H2 C1 C4 117.760
C3 C1 C4 124.480 H5 C3 H7 117.161
H6 C4 H8 117.161
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability