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: MP2/cc-pVQZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A"
Energy calculated at MP2/cc-pVQZ
 hartrees
Energy at 0K-192.166248
Energy at 298.15K-192.170834
HF Energy-191.426409
Nuclear repulsion energy112.687130
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 MP2/cc-pVQZ
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' 3344 3172 1.24      
2 A' 3224 3057 5.13      
3 A' 3211 3045 0.24      
4 A' 3084 2925 0.28      
5 A' 2129 2019 1164.74      
6 A' 1481 1404 15.74      
7 A' 1469 1393 35.39      
8 A' 1392 1321 50.73      
9 A' 1272 1206 88.90      
10 A' 1081 1025 6.68      
11 A' 901 855 15.69      
12 A' 823 781 2.51      
13 A' 533 506 16.39      
14 A' 381 362 2.00      
15 A" 3169 3005 2.88      
16 A" 1492 1415 9.01      
17 A" 1048 994 9.25      
18 A" 692 656 32.78      
19 A" 526 499 1.70      
20 A" 262 248 0.00      
21 A" 102 97 0.07      

Unscaled Zero Point Vibrational Energy (zpe) 15807.0 cm-1
Scaled (by 0.9484) Zero Point Vibrational Energy (zpe) 14991.3 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 MP2/cc-pVQZ
ABC
0.36385 0.30918 0.17245

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/cc-pVQZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.170 0.000
O2 0.298 1.327 0.000
C3 -1.408 -0.261 0.000
C4 1.023 -0.937 0.000
H5 -2.170 0.499 0.000
H6 -1.680 -1.303 0.000
H7 2.019 -0.513 0.000
H8 0.880 -1.566 0.877
H9 0.880 -1.566 -0.877

Atom - Atom Distances (Å)
  C1 O2 C3 C4 H5 H6 H7 H8 H9
C11.19481.47281.50772.19472.23512.13202.13512.1351
O21.19482.33102.37792.60293.29152.52053.07903.0790
C31.47282.33102.52341.07641.07703.43682.77642.7764
C41.50772.37792.52343.50112.72821.08281.08851.0885
H52.19472.60291.07643.50111.86784.31003.78653.7865
H62.23513.29151.07702.72821.86783.78332.71942.7194
H72.13202.52053.43681.08284.31003.78331.78181.7818
H82.13513.07902.77641.08853.78652.71941.78181.7538
H92.13513.07902.77641.08853.78652.71941.78181.7538

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 118.008 C1 C3 H6 121.685
C1 C4 H7 109.691 C1 C4 H8 109.597
C1 C4 H9 109.597 O2 C1 C3 121.468
O2 C1 C4 122.843 C3 C1 C4 115.689
H5 C3 H6 120.307 H7 C4 H8 110.292
H7 C4 H9 110.292 H8 C4 H9 107.336
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability