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All results from a given calculation for C5H8O2 (Acetylacetone)

using model chemistry: HF/CEP-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 HF/CEP-31G
 hartrees
Energy at 0K-63.328305
Energy at 298.15K-63.337020
HF Energy-63.328305
Nuclear repulsion energy159.550561
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 HF/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 A 3352 3021 19.07      
2 A 3307 2981 39.41      
3 A 3279 2956 14.21      
4 A 3227 2909 0.62      
5 A 1870 1685 19.29      
6 A 1625 1465 9.90      
7 A 1616 1457 30.62      
8 A 1605 1447 8.36      
9 A 1562 1408 3.89      
10 A 1407 1268 31.07      
11 A 1268 1143 0.94      
12 A 1205 1086 0.59      
13 A 1065 960 0.25      
14 A 858 774 0.02      
15 A 675 609 0.70      
16 A 512 462 16.65      
17 A 340 306 0.67      
18 A 168 151 1.68      
19 A 148 134 0.84      
20 A 47 42 14.12      
21 B 3358 3027 19.27      
22 B 3350 3020 32.22      
23 B 3306 2980 11.47      
24 B 3227 2909 22.46      
25 B 1849 1667 371.34      
26 B 1616 1457 4.83      
27 B 1608 1449 43.83      
28 B 1562 1408 58.69      
29 B 1454 1311 75.98      
30 B 1351 1218 132.59      
31 B 1178 1062 8.29      
32 B 1132 1020 0.89      
33 B 1026 925 0.94      
34 B 879 792 1.23      
35 B 579 522 31.52      
36 B 539 486 15.74      
37 B 427 385 2.80      
38 B 156 140 0.06      
39 B 51 46 17.04      

Unscaled Zero Point Vibrational Energy (zpe) 28891.4 cm-1
Scaled (by 0.9014) Zero Point Vibrational Energy (zpe) 26042.7 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 HF/CEP-31G
ABC
0.13684 0.06262 0.04947

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.992
C2 0.000 1.254 0.104
C3 0.000 -1.254 0.104
C4 -1.346 1.810 -0.332
C5 1.346 -1.810 -0.332
O6 1.068 1.763 -0.242
O7 -1.068 -1.763 -0.242
H8 -0.889 -0.023 1.612
H9 0.889 0.023 1.612
H10 -1.201 2.607 -1.054
H11 -1.960 1.022 -0.764
H12 -1.877 2.201 0.536
H13 1.201 -2.607 -1.054
H14 1.960 -1.022 -0.764
H15 1.877 -2.201 0.536

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 O6 O7 H8 H9 H10 H11 H12 H13 H14 H15
C11.53721.53722.61592.61592.40262.40261.08401.08403.52492.82342.92863.52492.82342.9286
C21.53722.50881.52013.37531.23263.21952.16732.14032.14742.15622.14634.20623.12703.9561
C31.53722.50883.37531.52013.21951.23262.14032.16734.20623.12703.95612.14742.15622.1463
C42.61591.52013.37534.51142.41653.58502.71083.45971.08471.08821.09045.14964.37495.2184
C52.61593.37531.52014.51143.58502.41653.45972.71085.14964.37495.21841.08471.08821.0904
O62.40261.23263.21952.41653.58504.12283.23392.54852.55373.16133.07784.44672.97074.1198
O72.40263.21951.23263.58502.41654.12282.54853.23394.44672.97074.11982.55373.16133.0778
H81.08402.16732.14032.71083.45973.23392.54851.77923.75762.80772.66094.26033.84213.6816
H91.08402.14032.16733.45972.71082.54853.23391.77924.26033.84213.68163.75762.80772.6609
H103.52492.14744.20621.08475.14962.55374.44673.75764.26031.78101.77455.74064.82175.9262
H112.82342.15623.12701.08824.37493.16132.97072.80773.84211.78101.75674.82174.42165.1774
H122.92862.14633.95611.09045.21843.07784.11982.66093.68161.77451.75675.92625.17745.7857
H133.52494.20622.14745.14961.08474.44672.55374.26033.75765.74064.82175.92621.78101.7745
H142.82343.12702.15624.37491.08822.97073.16133.84212.80774.82174.42165.17741.78101.7567
H152.92863.95612.14635.21841.09044.11983.07783.68162.66095.92625.17745.78571.77451.7567

picture of Acetylacetone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 117.653 C1 C2 O6 119.915
C1 C3 C5 117.653 C1 C3 O7 119.915
C2 C1 C3 109.377 C2 C1 H8 110.348
C2 C1 H9 108.235 C2 C4 H10 109.936
C2 C4 H11 110.420 C2 C4 H12 109.514
C3 C1 H8 108.235 C3 C1 H9 110.348
C3 C5 H13 109.936 C3 C5 H14 110.420
C3 C5 H15 109.514 C4 C2 O6 122.426
C5 C3 O7 122.426 H8 C1 H9 110.296
H10 C4 H11 110.097 H10 C4 H12 109.348
H11 C4 H12 107.483 H13 C5 H14 110.097
H13 C5 H15 109.348 H14 C5 H15 107.483
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.111      
2 C -0.042      
3 C -0.042      
4 C -0.299      
5 C -0.299      
6 O -0.205      
7 O -0.205      
8 H 0.161      
9 H 0.161      
10 H 0.169      
11 H 0.154      
12 H 0.117      
13 H 0.169      
14 H 0.154      
15 H 0.117      


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 1.877 1.877
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -46.341 -13.015 0.000
y -13.015 -48.642 0.000
z 0.000 0.000 -40.255
Traceless
 xyz
x -1.892 -13.015 0.000
y -13.015 -5.345 0.000
z 0.000 0.000 7.237
Polar
3z2-r214.473
x2-y22.302
xy-13.015
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.714 0.493 0.000
y 0.493 7.819 0.000
z 0.000 0.000 6.172


<r2> (average value of r2) Å2
<r2> 191.781
(<r2>)1/2 13.848