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All results from a given calculation for C5H8O2 (Acetylacetone)

using model chemistry: CID/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 CID/6-31G
 hartrees
Energy at 0K-344.166768
Energy at 298.15K-344.175397
HF Energy-343.566375
Nuclear repulsion energy294.232748
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 CID/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 3248 3038 7.28      
2 A 3199 2991 7.95      
3 A 3161 2956 3.05      
4 A 3129 2926 0.22      
5 A 1821 1703 12.24      
6 A 1582 1479 0.23      
7 A 1577 1475 30.69      
8 A 1570 1468 8.99      
9 A 1514 1416 5.53      
10 A 1360 1272 29.85      
11 A 1227 1148 1.77      
12 A 1165 1089 0.66      
13 A 1030 964 0.59      
14 A 832 778 0.02      
15 A 660 617 0.99      
16 A 506 473 10.76      
17 A 339 317 0.76      
18 A 167 157 0.10      
19 A 152 143 1.46      
20 A 50 47 10.33      
21 B 3248 3037 8.57      
22 B 3228 3019 5.81      
23 B 3198 2991 2.29      
24 B 3128 2925 4.59      
25 B 1800 1684 221.44      
26 B 1578 1476 10.01      
27 B 1576 1473 28.11      
28 B 1515 1417 70.03      
29 B 1376 1287 67.19      
30 B 1296 1212 164.26      
31 B 1133 1060 6.88      
32 B 1095 1024 0.68      
33 B 973 910 4.40      
34 B 849 794 2.06      
35 B 568 531 29.15      
36 B 524 490 5.44      
37 B 426 398 1.62      
38 B 163 152 0.26      
39 B 41 38 14.17      

Unscaled Zero Point Vibrational Energy (zpe) 28001.5 cm-1
Scaled (by 0.9352) Zero Point Vibrational Energy (zpe) 26187.0 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 CID/6-31G
ABC
0.13653 0.06401 0.05040

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.999
C2 0.000 1.244 0.109
C3 0.000 -1.244 0.109
C4 -1.343 1.776 -0.327
C5 1.343 -1.776 -0.327
O6 1.068 1.749 -0.255
O7 -1.068 -1.749 -0.255
H8 -0.893 -0.023 1.624
H9 0.893 0.023 1.624
H10 -1.206 2.550 -1.080
H11 -1.958 0.965 -0.727
H12 -1.874 2.198 0.532
H13 1.206 -2.550 -1.080
H14 1.958 -0.965 -0.727
H15 1.874 -2.198 0.532

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 O6 O7 H8 H9 H10 H11 H12 H13 H14 H15
C11.52961.52962.59122.59122.40172.40171.09041.09043.50362.78242.92563.50362.78242.9256
C21.52962.48801.50883.33371.23553.19802.16762.14132.13802.14662.14474.15433.06793.9416
C31.52962.48803.33371.50883.19801.23552.14132.16764.15433.06793.94162.13802.14662.1447
C42.59121.50883.33374.45332.41203.53602.69133.44661.08871.09291.09415.07694.30935.1842
C52.59123.33371.50884.45333.53602.41203.44662.69135.07694.30935.18421.08871.09291.0941
O62.40171.23553.19802.41203.53604.09753.24212.55702.54763.16043.07754.37902.89504.1042
O72.40173.19801.23553.53602.41204.09752.55703.24214.37902.89504.10422.54763.16043.0775
H81.09042.16762.14132.69133.44663.24212.55701.78663.74532.76352.66184.25463.81333.6848
H91.09042.14132.16763.44662.69132.55703.24211.78664.25463.81333.68483.74532.76352.6618
H103.50362.13804.15431.08875.07692.54764.37903.74534.25461.78881.78015.64074.74205.8839
H112.78242.14663.06791.09294.30933.16042.89502.76353.81331.78881.76404.74204.36545.1254
H122.92562.14473.94161.09415.18423.07754.10422.66183.68481.78011.76405.88395.12545.7762
H133.50364.15432.13805.07691.08874.37902.54764.25463.74535.64074.74205.88391.78881.7801
H142.78243.06792.14664.30931.09292.89503.16043.81332.76354.74204.36545.12541.78881.7640
H152.92563.94162.14475.18421.09414.10423.07753.68482.66185.88395.12545.77621.78011.7640

picture of Acetylacetone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 117.038 C1 C2 O6 120.217
C1 C3 C5 117.038 C1 C3 O7 120.217
C2 C1 C3 108.833 C2 C1 H8 110.528
C2 C1 H9 108.466 C2 C4 H10 109.738
C2 C4 H11 110.161 C2 C4 H12 109.942
C3 C1 H8 108.466 C3 C1 H9 110.528
C3 C5 H13 109.738 C3 C5 H14 110.161
C3 C5 H15 109.942 C4 C2 O6 122.713
C5 C3 O7 122.713 H8 C1 H9 110.013
H10 C4 H11 110.161 H10 C4 H12 109.282
H11 C4 H12 107.524 H13 C5 H14 110.161
H13 C5 H15 109.282 H14 C5 H15 107.524
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability