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All results from a given calculation for C5H8O2 (Acetylacetone)

using model chemistry: HF/STO-3G

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/STO-3G
 hartrees
Energy at 0K-339.344868
Energy at 298.15K-339.353160
HF Energy-339.344868
Nuclear repulsion energy291.808810
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/STO-3G
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 3764 3073 0.03      
2 A 3743 3056 0.05      
3 A 3611 2949 0.27      
4 A 3567 2913 0.25      
5 A 2130 1739 0.47      
6 A 1809 1477 1.64      
7 A 1806 1475 4.62      
8 A 1781 1454 1.27      
9 A 1705 1392 2.48      
10 A 1473 1203 32.35      
11 A 1350 1102 9.85      
12 A 1246 1018 0.41      
13 A 1147 937 0.01      
14 A 899 734 0.00      
15 A 692 565 0.59      
16 A 502 410 9.80      
17 A 361 295 0.16      
18 A 168 138 0.87      
19 A 138 113 0.05      
20 A 31 25 3.13      
21 B 3764 3073 0.44      
22 B 3743 3056 0.13      
23 B 3740 3054 0.20      
24 B 3567 2913 0.64      
25 B 2115 1727 68.85      
26 B 1808 1476 7.72      
27 B 1806 1474 3.25      
28 B 1706 1393 6.83      
29 B 1562 1276 20.06      
30 B 1403 1146 129.11      
31 B 1242 1014 2.63      
32 B 1194 975 0.24      
33 B 1078 880 0.32      
34 B 934 762 0.19      
35 B 578 472 17.84      
36 B 544 444 6.19      
37 B 415 338 0.77      
38 B 140 114 0.03      
39 B 56 46 4.20      

Unscaled Zero Point Vibrational Energy (zpe) 31658.3 cm-1
Scaled (by 0.8165) Zero Point Vibrational Energy (zpe) 25849.0 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 HF/STO-3G
ABC
0.13483 0.06101 0.04928

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/STO-3G

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.004
C2 -0.589 1.137 0.128
C3 0.589 -1.137 0.128
C4 -1.956 0.838 -0.517
C5 1.956 -0.838 -0.517
O6 0.000 2.191 -0.037
O7 0.000 -2.191 -0.037
H8 -0.784 -0.412 1.634
H9 0.784 0.412 1.634
H10 -2.242 1.648 -1.180
H11 -1.911 -0.090 -1.082
H12 -2.714 0.726 0.254
H13 2.242 -1.648 -1.180
H14 1.911 0.090 -1.082
H15 2.714 -0.726 0.254

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 O6 O7 H8 H9 H10 H11 H12 H13 H14 H15
C11.55131.55132.61602.61602.42582.42581.08731.08733.53752.83002.90763.53752.83002.9076
C21.55132.56091.54173.28541.21853.38382.16962.16302.16952.17162.16794.18112.96793.7940
C31.55132.56093.28541.54173.38381.21852.16302.16964.18112.96793.79402.16952.17162.1679
C42.61601.54173.28544.25652.42693.63742.75043.51021.08511.08641.08664.92413.97924.9851
C52.61603.28541.54174.25653.63742.42693.51022.75044.92413.97924.98511.08511.08641.0866
O62.42581.21853.38382.42693.63744.38203.19162.56372.57493.15323.09744.59023.02623.9951
O72.42583.38381.21853.63742.42694.38202.56373.19164.59023.02623.99512.57493.15323.0974
H81.08732.16962.16302.75043.51023.19162.56371.77223.78022.95782.63134.31373.85893.7734
H91.08732.16302.16963.51022.75042.56373.19161.77224.31373.85893.77343.78022.95782.6313
H103.53752.16954.18111.08514.92412.57494.59023.78024.31371.77131.76875.56524.43695.6794
H112.83002.17162.96791.08643.97923.15323.02622.95783.85891.77131.75924.43693.82574.8554
H122.90762.16793.79401.08664.98513.09743.99512.63133.77341.76871.75925.67944.85545.6184
H133.53754.18112.16954.92411.08514.59022.57494.31373.78025.56524.43695.67941.77131.7687
H142.83002.96792.17163.97921.08643.02623.15323.85892.95784.43693.82574.85541.77131.7592
H152.90763.79402.16794.98511.08663.99513.09743.77342.63135.67944.85545.61841.76871.7592

picture of Acetylacetone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 115.510 C1 C2 O6 121.818
C1 C3 C5 115.510 C1 C3 O7 121.818
C2 C1 C3 111.255 C2 C1 H8 109.353
C2 C1 H9 108.845 C2 C4 H10 110.153
C2 C4 H11 110.237 C2 C4 H12 109.929
C3 C1 H8 108.845 C3 C1 H9 109.353
C3 C5 H13 110.153 C3 C5 H14 110.237
C3 C5 H15 109.929 C4 C2 O6 122.671
C5 C3 O7 122.671 H8 C1 H9 109.160
H10 C4 H11 109.315 H10 C4 H12 109.059
H11 C4 H12 108.108 H13 C5 H14 109.315
H13 C5 H15 109.059 H14 C5 H15 108.108
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.158      
2 C 0.208      
3 C 0.208      
4 C -0.209      
5 C -0.209      
6 O -0.223      
7 O -0.223      
8 H 0.076      
9 H 0.076      
10 H 0.077      
11 H 0.075      
12 H 0.074      
13 H 0.077      
14 H 0.075      
15 H 0.074      


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 0.402 0.402
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -36.197 -2.554 0.000
y -2.554 -48.928 0.000
z 0.000 0.000 -37.369
Traceless
 xyz
x 6.951 -2.554 0.000
y -2.554 -12.144 0.000
z 0.000 0.000 5.193
Polar
3z2-r210.386
x2-y212.730
xy-2.554
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.403 0.502 0.000
y 0.502 5.315 0.000
z 0.000 0.000 3.331


<r2> (average value of r2) Å2
<r2> 236.571
(<r2>)1/2 15.381