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: MP4=FULL/CEP-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 2A2
Energy calculated at MP4=FULL/CEP-31G
 hartrees
Energy at 0K-19.520908
Energy at 298.15K-19.525077
HF Energy-19.278102
Nuclear repulsion energy35.125644
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 MP4=FULL/CEP-31G
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 3222 3222        
2 A1 3126 3126        
3 A1 3104 3104        
4 A1 1525 1525        
5 A1 1277 1277        
6 A1 1025 1025        
7 A1 418 418        
8 A2 710 710        
9 A2 548 548        
10 B1 1016 1016        
11 B1 742 742        
12 B1 530 530        
13 B2 3214 3214        
14 B2 3108 3108        
15 B2 1502 1502        
16 B2 1410 1410        
17 B2 1168 1168        
18 B2 922 922        

Unscaled Zero Point Vibrational Energy (zpe) 14283.7 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 14283.7 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 MP4=FULL/CEP-31G
ABC
1.71524 0.32569 0.27372

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/CEP-31G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.466
H2 0.000 0.000 1.573
C3 0.000 1.264 -0.206
C4 0.000 -1.264 -0.206
H5 0.000 2.214 0.358
H6 0.000 -2.214 0.358
H7 0.000 1.322 -1.309
H8 0.000 -1.322 -1.309

Atom - Atom Distances (Å)
  C1 H2 C3 C4 H5 H6 H7 H8
C11.10691.43161.43162.21702.21702.21362.2136
H21.10692.18222.18222.52602.52603.17113.1711
C31.43162.18222.52831.10473.52391.10522.8117
C41.43162.18222.52833.52391.10472.81171.1052
H52.21702.52601.10473.52394.42881.89103.9095
H62.21702.52603.52391.10474.42883.90951.8910
H72.21363.17111.10522.81171.89103.90952.6438
H82.21363.17112.81171.10523.90951.89102.6438

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 121.347 C1 C3 H7 120.984
C1 C4 H6 121.347 C1 C4 H8 120.984
H2 C1 C3 117.989 H2 C1 C4 117.989
C3 C1 C4 124.022 H5 C3 H7 117.669
H6 C4 H8 117.669
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability