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 C5H8O2 (Acetylacetone)

using model chemistry: PBEPBE/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at PBEPBE/6-31G
 hartrees
Energy at 0K-345.281549
Energy at 298.15K-345.289894
HF Energy-345.281549
Nuclear repulsion energy292.895996
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 PBEPBE/6-31G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A 3120 3077 7.61      
2 A 3051 3009 4.55      
3 A 3029 2987 2.09      
4 A 2981 2939 0.24      
5 A 1681 1658 10.47      
6 A 1471 1451 6.36      
7 A 1468 1448 20.84      
8 A 1453 1433 14.98      
9 A 1384 1365 4.88      
10 A 1260 1243 30.98      
11 A 1131 1115 2.18      
12 A 1066 1051 1.84      
13 A 944 931 0.56      
14 A 778 767 0.04      
15 A 616 608 2.13      
16 A 470 464 4.44      
17 A 325 321 1.02      
18 A 177 174 0.41      
19 A 141 139 0.81      
20 A 65 64 8.21      
21 B 3120 3077 7.50      
22 B 3106 3063 5.34      
23 B 3051 3009 0.21      
24 B 2980 2939 3.14      
25 B 1655 1632 225.77      
26 B 1468 1448 4.64      
27 B 1463 1443 36.47      
28 B 1384 1365 108.95      
29 B 1236 1219 44.32      
30 B 1178 1162 301.67      
31 B 1043 1028 22.73      
32 B 999 985 2.06      
33 B 889 877 32.17      
34 B 799 788 15.01      
35 B 529 521 27.15      
36 B 491 484 0.95      
37 B 408 403 1.29      
38 B 176 173 1.21      
39 B 32 31 10.69      

Unscaled Zero Point Vibrational Energy (zpe) 26307.6 cm-1
Scaled (by 0.9862) Zero Point Vibrational Energy (zpe) 25944.6 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 PBEPBE/6-31G
ABC
0.13318 0.06456 0.05050

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/6-31G

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.016
C2 0.000 1.246 0.111
C3 0.000 -1.246 0.111
C4 -1.361 1.746 -0.313
C5 1.361 -1.746 -0.313
O6 1.075 1.751 -0.282
O7 -1.075 -1.751 -0.282
H8 -0.906 -0.021 1.641
H9 0.906 0.021 1.641
H10 -1.263 2.509 -1.098
H11 -1.976 0.900 -0.671
H12 -1.894 2.182 0.553
H13 1.263 -2.509 -1.098
H14 1.976 -0.900 -0.671
H15 1.894 -2.182 0.553

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 O6 O7 H8 H9 H10 H11 H12 H13 H14 H15
C11.54001.54002.58202.58202.43022.43021.10091.10093.51532.74982.92583.51532.74982.9258
C21.54002.49191.51053.31431.25073.20812.18352.15902.15652.15322.15794.14163.02023.9409
C31.54002.49193.31431.51053.20811.25072.15902.18354.14163.02023.94092.15652.15322.1579
C42.58201.51053.31434.42762.43553.50922.67343.45411.09901.10581.10605.05984.27385.1739
C52.58203.31431.51054.42763.50922.43553.45412.67345.05984.27385.17391.09901.10581.1060
O62.43021.25073.20812.43553.50924.10913.28062.59182.58883.19093.11324.34132.82724.1032
O72.43023.20811.25073.50922.43554.10912.59183.28064.34132.82724.10322.58883.19093.1132
H81.10092.18352.15902.67343.45413.28062.59181.81313.74562.70902.64804.28863.79803.7000
H91.10092.15902.18353.45412.67342.59183.28061.81314.28863.79803.70003.74562.70902.6480
H103.51532.15654.14161.09905.05982.58884.34133.74564.28861.81081.79775.61674.72115.8895
H112.74982.15323.02021.10584.27383.19092.82722.70903.79801.81081.77444.72114.34275.0961
H122.92582.15793.94091.10605.17393.11324.10322.64803.70001.79771.77445.88955.09615.7778
H133.51534.14162.15655.05981.09904.34132.58884.28863.74565.61674.72115.88951.81081.7977
H142.74983.02022.15324.27381.10582.82723.19093.79802.70904.72114.34275.09611.81081.7744
H152.92583.94092.15795.17391.10604.10323.11323.70002.64805.88955.09615.77781.79771.7744

picture of Acetylacetone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 115.646 C1 C2 O6 120.762
C1 C3 C5 115.646 C1 C3 O7 120.762
C2 C1 C3 108.013 C2 C1 H8 110.437
C2 C1 H9 108.528 C2 C4 H10 110.466
C2 C4 H11 109.802 C2 C4 H12 110.165
C3 C1 H8 108.528 C3 C1 H9 110.437
C3 C5 H13 110.466 C3 C5 H14 109.802
C3 C5 H15 110.165 C4 C2 O6 123.510
C5 C3 O7 123.510 H8 C1 H9 110.857
H10 C4 H11 110.422 H10 C4 H12 109.227
H11 C4 H12 106.686 H13 C5 H14 110.422
H13 C5 H15 109.227 H14 C5 H15 106.686
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.403      
2 C 0.327      
3 C 0.327      
4 C -0.521      
5 C -0.521      
6 O -0.371      
7 O -0.371      
8 H 0.187      
9 H 0.187      
10 H 0.190      
11 H 0.203      
12 H 0.187      
13 H 0.190      
14 H 0.203      
15 H 0.187      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 1.522 1.522
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -43.654 -10.076 0.000
y -10.076 -46.050 0.000
z 0.000 0.000 -40.156
Traceless
 xyz
x -0.551 -10.076 0.000
y -10.076 -4.145 0.000
z 0.000 0.000 4.696
Polar
3z2-r29.391
x2-y22.396
xy-10.076
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.436 -0.162 0.000
y -0.162 9.945 0.000
z 0.000 0.000 6.775


<r2> (average value of r2) Å2
<r2> 233.650
(<r2>)1/2 15.286