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: CISD/SDD

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 2A2
Energy calculated at CISD/SDD
 hartrees
Energy at 0K-116.676117
Energy at 298.15K-116.680320
HF Energy-116.439291
Nuclear repulsion energy63.971502
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 CISD/SDD
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 3286 3029 45.06      
2 A1 3191 2941 4.49      
3 A1 3168 2921 23.18      
4 A1 1560 1438 4.73      
5 A1 1289 1188 0.05      
6 A1 1043 962 0.44      
7 A1 431 397 0.00      
8 A2 736 678 0.00      
9 A2 548 505 0.00      
10 B1 992 914 39.52      
11 B1 751 692 108.84      
12 B1 528 486 20.68      
13 B2 3278 3022 10.74      
14 B2 3165 2918 22.12      
15 B2 1538 1418 2.59      
16 B2 1454 1340 5.60      
17 B2 1191 1097 0.01      
18 B2 952 878 0.64      

Unscaled Zero Point Vibrational Energy (zpe) 14550.3 cm-1
Scaled (by 0.9218) Zero Point Vibrational Energy (zpe) 13412.4 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 CISD/SDD
ABC
1.78529 0.33288 0.28057

See section I.F.4 to change rotational constant units
Geometric Data calculated at CISD/SDD

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 1.547
C3 0.000 1.250 -0.200
C4 0.000 -1.250 -0.200
H5 0.000 2.185 0.361
H6 0.000 -2.185 0.361
H7 0.000 1.319 -1.290
H8 0.000 -1.319 -1.290

Atom - Atom Distances (Å)
  C1 H2 C3 C4 H5 H6 H7 H8
C11.09411.41031.41032.18652.18652.18552.1855
H21.09412.14812.14812.48552.48553.12833.1283
C31.41032.14812.50041.09003.48031.09182.7912
C41.41032.14812.50043.48031.09002.79121.0918
H52.18652.48551.09003.48034.36911.86383.8735
H62.18652.48553.48031.09004.36913.87351.8638
H72.18553.12831.09182.79121.86383.87352.6390
H82.18553.12832.79121.09183.87351.86382.6390

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 121.439 C1 C3 H7 121.203
C1 C4 H6 121.439 C1 C4 H8 121.203
H2 C1 C3 117.565 H2 C1 C4 117.565
C3 C1 C4 124.869 H5 C3 H7 117.357
H6 C4 H8 117.357
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability