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All results from a given calculation for C5H8O2 (Acetylacetone)

using model chemistry: B1B95/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at B1B95/6-31G**
 hartrees
Energy at 0K-345.639107
Energy at 298.15K-345.647487
HF Energy-345.639107
Nuclear repulsion energy297.476859
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 B1B95/6-31G**
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 3209 3064 6.06      
2 A 3151 3008 4.29      
3 A 3120 2979 1.91      
4 A 3080 2941 0.33      
5 A 1866 1782 20.93      
6 A 1500 1432 7.90      
7 A 1497 1429 16.84      
8 A 1484 1417 8.31      
9 A 1410 1346 8.79      
10 A 1292 1234 26.93      
11 A 1155 1103 1.67      
12 A 1085 1036 0.87      
13 A 951 908 0.51      
14 A 803 767 0.19      
15 A 626 598 1.39      
16 A 488 466 6.73      
17 A 316 301 0.75      
18 A 174 166 0.19      
19 A 134 128 0.99      
20 A 61 58 7.22      
21 B 3209 3064 6.23      
22 B 3193 3049 5.17      
23 B 3150 3008 0.48      
24 B 3080 2940 2.20      
25 B 1840 1757 312.23      
26 B 1497 1429 1.40      
27 B 1493 1426 24.72      
28 B 1409 1346 105.40      
29 B 1268 1210 155.00      
30 B 1207 1153 140.15      
31 B 1069 1020 4.55      
32 B 1004 959 0.87      
33 B 907 866 16.10      
34 B 822 785 8.46      
35 B 544 519 27.07      
36 B 498 476 1.11      
37 B 402 384 1.12      
38 B 173 166 0.61      
39 B 27 26 11.26      

Unscaled Zero Point Vibrational Energy (zpe) 27097.3 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 25872.5 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 B1B95/6-31G**
ABC
0.13777 0.06636 0.05218

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31G**

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.013
C2 0.000 1.226 0.104
C3 0.000 -1.226 0.104
C4 -1.353 1.738 -0.301
C5 1.353 -1.738 -0.301
O6 1.040 1.701 -0.292
O7 -1.040 -1.701 -0.292
H8 -0.898 -0.031 1.631
H9 0.898 0.031 1.631
H10 -1.254 2.494 -1.079
H11 -1.974 0.907 -0.647
H12 -1.859 2.172 0.568
H13 1.254 -2.494 -1.079
H14 1.974 -0.907 -0.647
H15 1.859 -2.172 0.568

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 O6 O7 H8 H9 H10 H11 H12 H13 H14 H15
C11.52631.52632.56532.56532.38292.38291.09061.09063.48862.73492.89353.48862.73492.8935
C21.52632.45221.50273.28391.20993.13152.17182.13692.14032.13662.13654.10033.00243.9011
C31.52632.45223.28391.50273.13151.20992.13692.17184.10033.00243.90112.14032.13662.1365
C42.56531.50273.28394.40612.39343.45372.65883.42321.08881.09401.09465.03174.26525.1347
C52.56533.28391.50274.40613.45372.39343.42322.65885.03174.26525.13471.08881.09401.0946
O62.38291.20993.13152.39343.45373.98743.23302.55092.55183.13723.05994.27352.79334.0510
O72.38293.13151.20993.45372.39343.98742.55093.23304.27352.79334.05102.55183.13723.0599
H81.09062.17182.13692.65883.42323.23302.55091.79783.72062.68862.62794.24793.76993.6496
H91.09062.13692.17183.42322.65882.55093.23301.79784.24793.76993.64963.72062.68862.6279
H103.48862.14034.10031.08885.03172.55184.27353.72064.24791.79501.78305.58334.70945.8460
H112.73492.13663.00241.09404.26523.13722.79332.68863.76991.79501.75784.70944.34555.0648
H122.89352.13653.90111.09465.13473.05994.05102.62793.64961.78301.75785.84605.06485.7180
H133.48864.10032.14035.03171.08884.27352.55184.24793.72065.58334.70945.84601.79501.7830
H142.73493.00242.13664.26521.09402.79333.13723.76992.68864.70944.34555.06481.79501.7578
H152.89353.90112.13655.13471.09464.05103.05993.64962.62795.84605.06485.71801.78301.7578

picture of Acetylacetone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 115.760 C1 C2 O6 120.683
C1 C3 C5 115.760 C1 C3 O7 120.683
C2 C1 C3 106.902 C2 C1 H8 111.088
C2 C1 H9 108.341 C2 C4 H10 110.340
C2 C4 H11 109.734 C2 C4 H12 109.696
C3 C1 H8 108.341 C3 C1 H9 111.088
C3 C5 H13 110.340 C3 C5 H14 109.734
C3 C5 H15 109.696 C4 C2 O6 123.492
C5 C3 O7 123.492 H8 C1 H9 111.016
H10 C4 H11 110.639 H10 C4 H12 109.498
H11 C4 H12 106.868 H13 C5 H14 110.639
H13 C5 H15 109.498 H14 C5 H15 106.868
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.467      
2 C 0.432      
3 C 0.432      
4 C -0.579      
5 C -0.579      
6 O -0.425      
7 O -0.425      
8 H 0.199      
9 H 0.199      
10 H 0.201      
11 H 0.211      
12 H 0.193      
13 H 0.201      
14 H 0.211      
15 H 0.193      


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 1.537 1.537
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -42.910 -9.017 0.000
y -9.017 -44.831 0.000
z 0.000 0.000 -39.603
Traceless
 xyz
x -0.693 -9.017 0.000
y -9.017 -3.574 0.000
z 0.000 0.000 4.267
Polar
3z2-r28.535
x2-y21.921
xy-9.017
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.953 -0.229 0.000
y -0.229 8.964 0.000
z 0.000 0.000 6.761


<r2> (average value of r2) Å2
<r2> 227.254
(<r2>)1/2 15.075