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All results from a given calculation for C5H8O2 (Acetylacetone)

using model chemistry: PBE1PBE/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 PBE1PBE/3-21G
 hartrees
Energy at 0K-343.494222
Energy at 298.15K-343.502989
HF Energy-343.494222
Nuclear repulsion energy297.982591
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 PBE1PBE/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 3191 3065 5.27      
2 A 3132 3008 2.06      
3 A 3128 3004 0.03      
4 A 3065 2944 0.12      
5 A 1790 1719 11.39      
6 A 1534 1473 26.79      
7 A 1525 1465 1.51      
8 A 1501 1442 21.24      
9 A 1435 1378 7.24      
10 A 1289 1238 31.91      
11 A 1166 1120 5.64      
12 A 1126 1081 4.15      
13 A 962 924 0.96      
14 A 803 771 0.01      
15 A 649 623 1.45      
16 A 479 460 5.33      
17 A 342 329 1.16      
18 A 219 211 0.36      
19 A 160 153 0.33      
20 A 76 73 6.55      
21 B 3208 3081 1.65      
22 B 3191 3064 3.65      
23 B 3131 3007 0.31      
24 B 3065 2944 2.49      
25 B 1766 1696 188.40      
26 B 1533 1472 8.63      
27 B 1520 1460 34.28      
28 B 1436 1379 142.66      
29 B 1282 1232 73.48      
30 B 1192 1145 234.49      
31 B 1084 1041 14.88      
32 B 1047 1005 0.82      
33 B 909 873 31.02      
34 B 802 770 9.39      
35 B 549 527 21.95      
36 B 514 494 6.47      
37 B 430 413 0.83      
38 B 219 210 1.65      
39 B 64 61 12.74      

Unscaled Zero Point Vibrational Energy (zpe) 27255.7 cm-1
Scaled (by 0.9604) Zero Point Vibrational Energy (zpe) 26176.3 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 PBE1PBE/3-21G
ABC
0.13131 0.06995 0.05395

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/3-21G

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.055
C2 0.000 1.209 0.114
C3 0.000 -1.209 0.114
C4 -1.388 1.603 -0.320
C5 1.388 -1.603 -0.320
O6 1.045 1.713 -0.296
O7 -1.045 -1.713 -0.296
H8 -0.907 -0.012 1.663
H9 0.907 0.012 1.663
H10 -1.346 2.300 -1.160
H11 -1.942 0.695 -0.592
H12 -1.916 2.074 0.520
H13 1.346 -2.300 -1.160
H14 1.942 -0.695 -0.592
H15 1.916 -2.074 0.520

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 O6 O7 H8 H9 H10 H11 H12 H13 H14 H15
C11.53181.53182.52752.52752.41892.41891.09221.09223.46512.63912.87403.46512.63912.8740
C21.53182.41801.50703.16631.23053.13042.17082.15752.15062.12912.14123.96842.80963.8230
C31.53182.41803.16631.50703.13041.23052.15752.17083.96842.80963.82302.15062.12912.1412
C42.52751.50703.16634.24162.43553.33462.60263.42551.09191.09811.09814.83924.05525.0148
C52.52753.16631.50704.24163.33462.43553.42552.60264.83924.05525.01481.09191.09811.0981
O62.41891.23053.13042.43553.33464.01353.25932.59832.60903.16923.09244.11632.58693.9710
O72.41893.13041.23053.33462.43554.01352.59833.25934.11632.58693.97102.60903.16923.0924
H81.09222.17082.15752.60263.42553.25932.59831.81433.67512.57972.58394.27563.69693.6784
H91.09222.15752.17083.42552.60262.59833.25931.81434.27563.69693.67843.67512.57972.5839
H103.46512.15063.96841.09194.83922.60904.11633.67514.27561.80381.78825.32984.48355.7093
H112.63912.12912.80961.09814.05523.16922.58692.57973.69691.80381.77164.48354.12474.8772
H122.87402.14123.82301.09815.01483.09243.97102.58393.67841.78821.77165.70934.87725.6475
H133.46513.96842.15064.83921.09194.11632.60904.27563.67515.32984.48355.70931.80381.7882
H142.63912.80962.12914.05521.09812.58693.16923.69692.57974.48354.12474.87721.80381.7716
H152.87403.82302.14125.01481.09813.97103.09243.67842.58395.70934.87725.64751.78821.7716

picture of Acetylacetone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 112.555 C1 C2 O6 121.875
C1 C3 C5 112.555 C1 C3 O7 121.875
C2 C1 C3 104.232 C2 C1 H8 110.518
C2 C1 H9 109.477 C2 C4 H10 110.679
C2 C4 H11 108.615 C2 C4 H12 109.555
C3 C1 H8 109.477 C3 C1 H9 110.518
C3 C5 H13 110.679 C3 C5 H14 108.615
C3 C5 H15 109.555 C4 C2 O6 125.367
C5 C3 O7 125.367 H8 C1 H9 112.318
H10 C4 H11 110.910 H10 C4 H12 109.477
H11 C4 H12 107.540 H13 C5 H14 110.910
H13 C5 H15 109.477 H14 C5 H15 107.540
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.619      
2 C 0.437      
3 C 0.437      
4 C -0.713      
5 C -0.713      
6 O -0.444      
7 O -0.444      
8 H 0.263      
9 H 0.263      
10 H 0.254      
11 H 0.263      
12 H 0.250      
13 H 0.254      
14 H 0.263      
15 H 0.250      


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 1.477 1.477
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -43.204 -8.720 0.000
y -8.720 -45.977 0.000
z 0.000 0.000 -40.323
Traceless
 xyz
x -0.054 -8.720 0.000
y -8.720 -4.213 0.000
z 0.000 0.000 4.267
Polar
3z2-r28.534
x2-y22.773
xy-8.720
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.411 -0.210 0.000
y -0.210 8.197 0.000
z 0.000 0.000 6.279


<r2> (average value of r2) Å2
<r2> 222.139
(<r2>)1/2 14.904