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All results from a given calculation for C5H8O2 (Acetylacetone)

using model chemistry: TPSSh/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at TPSSh/3-21G*
 hartrees
Energy at 0K-343.904270
Energy at 298.15K-343.912870
HF Energy-343.904270
Nuclear repulsion energy296.273579
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 TPSSh/3-21G*
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 3159 3050 10.38      
2 A 3102 2996 3.78      
3 A 3096 2989 2.80      
4 A 3040 2935 0.10      
5 A 1730 1671 9.80      
6 A 1539 1487 20.47      
7 A 1531 1478 2.32      
8 A 1505 1453 15.76      
9 A 1432 1383 4.17      
10 A 1267 1224 30.83      
11 A 1153 1113 4.97      
12 A 1112 1074 2.56      
13 A 940 907 2.42      
14 A 776 749 0.01      
15 A 631 609 1.52      
16 A 463 447 4.82      
17 A 330 319 0.97      
18 A 214 206 0.36      
19 A 154 148 0.32      
20 A 77 74 6.13      
21 B 3178 3069 4.55      
22 B 3158 3050 7.59      
23 B 3096 2990 0.06      
24 B 3039 2935 5.11      
25 B 1705 1647 164.72      
26 B 1539 1486 8.34      
27 B 1526 1473 35.77      
28 B 1432 1383 113.44      
29 B 1265 1221 53.02      
30 B 1166 1126 221.00      
31 B 1071 1034 31.79      
32 B 1039 1003 3.13      
33 B 882 852 53.29      
34 B 768 742 15.66      
35 B 532 513 24.45      
36 B 497 480 4.79      
37 B 415 401 0.58      
38 B 213 206 1.37      
39 B 63 61 11.67      

Unscaled Zero Point Vibrational Energy (zpe) 26914.6 cm-1
Scaled (by 0.9657) Zero Point Vibrational Energy (zpe) 25991.5 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 TPSSh/3-21G*
ABC
0.12953 0.06921 0.05334

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/3-21G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.064
C2 0.000 1.217 0.115
C3 0.000 -1.217 0.115
C4 -1.400 1.613 -0.315
C5 1.400 -1.613 -0.315
O6 1.051 1.720 -0.306
O7 -1.051 -1.720 -0.306
H8 -0.908 -0.010 1.671
H9 0.908 0.010 1.671
H10 -1.362 2.311 -1.155
H11 -1.952 0.702 -0.585
H12 -1.924 2.082 0.529
H13 1.362 -2.311 -1.155
H14 1.952 -0.702 -0.585
H15 1.924 -2.082 0.529

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 O6 O7 H8 H9 H10 H11 H12 H13 H14 H15
C11.54281.54282.54272.54272.43682.43681.09271.09273.48172.64982.88533.48172.64982.8853
C21.54282.43311.51753.18661.23903.14692.18002.16822.16052.13652.15053.98932.82513.8416
C31.54282.43313.18661.51753.14691.23902.16822.18003.98932.82513.84162.16052.13652.1505
C42.54271.51753.18664.27252.45373.35142.61223.44151.09271.09911.09934.87244.08305.0423
C52.54273.18661.51754.27253.35142.45373.44152.61224.87244.08305.04231.09271.09911.0993
O62.43681.23903.14692.45373.35144.03113.27742.61702.62623.18323.11184.13122.59893.9895
O72.43683.14691.23903.35142.45374.03112.61703.27744.13122.59893.98952.62623.18323.1118
H81.09272.18002.16822.61223.44153.27742.61701.81713.68572.58562.59134.29393.70803.6906
H91.09272.16822.18003.44152.61222.61703.27741.81714.29393.70803.69063.68572.58562.5913
H103.48172.16053.98931.09274.87242.62624.13123.68574.29391.80631.79085.36584.51565.7398
H112.64982.13652.82511.09914.08303.18322.59892.58563.70801.80631.77434.51564.14894.9011
H122.88532.15053.84161.09935.04233.11183.98952.59133.69061.79081.77435.73984.90115.6708
H133.48173.98932.16054.87241.09274.13122.62624.29393.68575.36584.51565.73981.80631.7908
H142.64982.82512.13654.08301.09912.59893.18323.70802.58564.51564.14894.90111.80631.7743
H152.88533.84162.15055.04231.09933.98953.11183.69062.59135.73984.90115.67081.79081.7743

picture of Acetylacetone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 112.370 C1 C2 O6 121.935
C1 C3 C5 112.370 C1 C3 O7 121.935
C2 C1 C3 104.090 C2 C1 H8 110.443
C2 C1 H9 109.522 C2 C4 H10 110.672
C2 C4 H11 108.417 C2 C4 H12 109.498
C3 C1 H8 109.522 C3 C1 H9 110.443
C3 C5 H13 110.672 C3 C5 H14 108.417
C3 C5 H15 109.498 C4 C2 O6 125.477
C5 C3 O7 125.477 H8 C1 H9 112.495
H10 C4 H11 110.999 H10 C4 H12 109.564
H11 C4 H12 107.626 H13 C5 H14 110.999
H13 C5 H15 109.564 H14 C5 H15 107.626
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.582      
2 C 0.422      
3 C 0.422      
4 C -0.666      
5 C -0.666      
6 O -0.435      
7 O -0.435      
8 H 0.249      
9 H 0.249      
10 H 0.239      
11 H 0.248      
12 H 0.235      
13 H 0.239      
14 H 0.248      
15 H 0.235      


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 1.449 1.449
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.606 -0.313 0.000
y -0.313 8.657 0.000
z 0.000 0.000 6.412


<r2> (average value of r2) Å2
<r2> 224.360
(<r2>)1/2 14.979