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: B3PW91/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at B3PW91/6-31G*
 hartrees
Energy at 0K-345.662822
Energy at 298.15K-345.671230
HF Energy-345.662822
Nuclear repulsion energy296.051668
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 B3PW91/6-31G*
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 3187 3049 6.57      
2 A 3129 2993 4.88      
3 A 3099 2965 2.31      
4 A 3060 2927 0.35      
5 A 1843 1763 19.71      
6 A 1498 1433 8.56      
7 A 1495 1430 16.68      
8 A 1481 1417 7.96      
9 A 1408 1347 7.00      
10 A 1285 1230 27.58      
11 A 1153 1103 2.12      
12 A 1084 1037 1.12      
13 A 947 906 0.71      
14 A 796 762 0.15      
15 A 626 599 1.57      
16 A 487 466 6.06      
17 A 321 307 0.82      
18 A 172 165 0.16      
19 A 143 136 0.94      
20 A 60 58 7.40      
21 B 3186 3048 7.21      
22 B 3169 3032 5.65      
23 B 3128 2993 0.48      
24 B 3059 2927 2.75      
25 B 1816 1737 310.37      
26 B 1495 1430 1.40      
27 B 1489 1425 25.93      
28 B 1407 1346 101.23      
29 B 1263 1209 133.17      
30 B 1201 1149 174.03      
31 B 1067 1021 6.69      
32 B 1004 961 0.77      
33 B 902 863 20.84      
34 B 814 779 9.76      
35 B 546 523 26.58      
36 B 500 478 0.83      
37 B 409 391 1.36      
38 B 172 165 0.57      
39 B 48 46 10.77      

Unscaled Zero Point Vibrational Energy (zpe) 26975.1 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 25807.1 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 B3PW91/6-31G*
ABC
0.13737 0.06526 0.05137

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.007
C2 0.000 1.237 0.103
C3 0.000 -1.237 0.103
C4 -1.357 1.755 -0.301
C5 1.357 -1.755 -0.301
O6 1.043 1.720 -0.288
O7 -1.043 -1.720 -0.288
H8 -0.900 -0.031 1.628
H9 0.900 0.031 1.628
H10 -1.256 2.521 -1.072
H11 -1.981 0.928 -0.659
H12 -1.866 2.182 0.573
H13 1.256 -2.521 -1.072
H14 1.981 -0.928 -0.659
H15 1.866 -2.182 0.573

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 O6 O7 H8 H9 H10 H11 H12 H13 H14 H15
C11.53241.53242.57582.57582.39222.39221.09341.09343.50142.75032.90363.50142.75032.9036
C21.53242.47341.50783.31001.21363.15932.17812.14252.14672.14512.14404.13293.03163.9229
C31.53242.47343.31001.50783.15931.21362.14252.17814.13293.03163.92292.14672.14512.1440
C42.57581.50783.31004.43742.40003.48942.66873.43331.09171.09671.09755.07084.29785.1626
C52.57583.31001.50784.43743.48942.40003.43332.66875.07084.29785.16261.09171.09671.0975
O62.39221.21363.15932.40003.48944.02253.24172.55802.55783.14793.06834.31852.83354.0794
O72.39223.15931.21363.48942.40004.02252.55803.24174.31852.83354.07942.55783.14793.0683
H81.09342.17812.14252.66873.43333.24172.55801.80023.73282.70592.63524.25923.78633.6590
H91.09342.14252.17813.43332.66872.55803.24171.80024.25923.78633.65903.73282.70592.6352
H103.50142.14674.13291.09175.07082.55784.31853.73284.25921.79891.78695.63404.74855.8800
H112.75032.14513.03161.09674.29783.14792.83352.70593.78631.79891.76184.74854.37545.0979
H122.90362.14403.92291.09755.16263.06834.07942.63523.65901.78691.76185.88005.09795.7419
H133.50144.13292.14675.07081.09174.31852.55784.25923.73285.63404.74855.88001.79891.7869
H142.75033.03162.14514.29781.09672.83353.14793.78632.70594.74854.37545.09791.79891.7618
H152.90363.92292.14405.16261.09754.07943.06833.65902.63525.88005.09795.74191.78691.7618

picture of Acetylacetone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 115.822 C1 C2 O6 120.746
C1 C3 C5 115.822 C1 C3 O7 120.746
C2 C1 C3 107.615 C2 C1 H8 110.988
C2 C1 H9 108.200 C2 C4 H10 110.319
C2 C4 H11 109.890 C2 C4 H12 109.750
C3 C1 H8 108.200 C3 C1 H9 110.988
C3 C5 H13 110.319 C3 C5 H14 109.890
C3 C5 H15 109.750 C4 C2 O6 123.383
C5 C3 O7 123.383 H8 C1 H9 110.813
H10 C4 H11 110.577 H10 C4 H12 109.422
H11 C4 H12 106.817 H13 C5 H14 110.577
H13 C5 H15 109.422 H14 C5 H15 106.817
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.485      
2 C 0.446      
3 C 0.446      
4 C -0.603      
5 C -0.603      
6 O -0.427      
7 O -0.427      
8 H 0.204      
9 H 0.204      
10 H 0.207      
11 H 0.218      
12 H 0.199      
13 H 0.207      
14 H 0.218      
15 H 0.199      


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 1.514 1.514
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -42.887 -9.137 0.000
y -9.137 -44.977 0.000
z 0.000 0.000 -39.595
Traceless
 xyz
x -0.601 -9.137 0.000
y -9.137 -3.736 0.000
z 0.000 0.000 4.337
Polar
3z2-r28.673
x2-y22.090
xy-9.137
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.035 -0.232 0.000
y -0.232 9.162 0.000
z 0.000 0.000 6.795


<r2> (average value of r2) Å2
<r2> 229.985
(<r2>)1/2 15.165