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 CH3COCH2 (Acetonyl radical)

using model chemistry: QCISD(T)=FULL/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A"
Energy calculated at QCISD(T)=FULL/aug-cc-pVDZ
 hartrees
Energy at 0K-192.032108
Energy at 298.15K 
HF Energy-191.367991
Nuclear repulsion energy110.857765
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)=FULL/aug-cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3270 3172        
2 A' 3150 3056        
3 A' 3146 3052        
4 A' 3028 2937        
5 A' 1600 1552        
6 A' 1466 1422        
7 A' 1448 1405        
8 A' 1378 1337        
9 A' 1270 1232        
10 A' 1052 1020        
11 A' 917 890        
12 A' 825 800        
13 A' 514 499        
14 A' 374 363        
15 A" 3103 3010        
16 A" 1461 1418        
17 A" 1008 978        
18 A" 712 691        
19 A" 491 476        
20 A" 318 309        
21 A" 28i 28i        

Unscaled Zero Point Vibrational Energy (zpe) 15250.3 cm-1
Scaled (by 0.9701) Zero Point Vibrational Energy (zpe) 14794.3 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)=FULL/aug-cc-pVDZ
ABC
0.35725 0.29796 0.16764

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)=FULL/aug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.146 0.000
O2 0.438 1.312 0.000
C3 -1.439 -0.098 0.000
C4 0.936 -1.059 0.000
H5 -2.118 0.760 0.000
H6 -1.849 -1.114 0.000
H7 1.979 -0.711 0.000
H8 0.751 -1.684 0.892
H9 0.751 -1.684 -0.892

Atom - Atom Distances (Å)
  C1 O2 C3 C4 H5 H6 H7 H8 H9
C11.24581.45961.52532.20502.23712.15702.17032.1703
O21.24582.34822.42252.61513.33402.54343.14233.1423
C31.45962.34822.56141.09421.09503.47292.84742.8474
C41.52532.42252.56143.55392.78471.10031.10501.1050
H52.20502.61511.09423.55391.89304.35333.87313.8731
H62.23713.33401.09502.78471.89303.84922.80692.8069
H72.15702.54343.47291.10034.35333.84921.80341.8034
H82.17033.14232.84741.10503.87312.80691.80341.7834
H92.17033.14232.84741.10503.87312.80691.80341.7834

picture of Acetonyl radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 H5 118.706 C1 C3 H6 121.600
C1 C4 H7 109.408 C1 C4 H8 110.177
C1 C4 H9 110.177 O2 C1 C3 120.231
O2 C1 C4 121.574 C3 C1 C4 118.196
H5 C3 H6 119.694 H7 C4 H8 109.725
H7 C4 H9 109.725 H8 C4 H9 107.606
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability