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All results from a given calculation for C5H10O (3-Pentanone)

using model chemistry: HF/CEP-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at HF/CEP-31G*
 hartrees
Energy at 0K-48.963161
Energy at 298.15K 
HF Energy-48.963161
Nuclear repulsion energy133.451617
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/CEP-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 A1 3298 2962 89.42      
2 A1 3235 2905 18.69      
3 A1 3224 2895 43.14      
4 A1 1984 1781 206.29      
5 A1 1625 1459 9.41      
6 A1 1604 1440 7.86      
7 A1 1554 1395 6.40      
8 A1 1487 1335 0.75      
9 A1 1203 1080 3.13      
10 A1 1084 973 3.53      
11 A1 843 757 0.01      
12 A1 425 382 0.54      
13 A1 202 182 0.63      
14 A2 3317 2979 0.00      
15 A2 3254 2922 0.00      
16 A2 1620 1455 0.00      
17 A2 1373 1233 0.00      
18 A2 1089 978 0.00      
19 A2 756 679 0.00      
20 A2 240 216 0.00      
21 A2 15 14 0.00      
22 B1 3318 2979 136.66      
23 B1 3266 2933 45.40      
24 B1 1620 1455 9.57      
25 B1 1421 1276 2.04      
26 B1 1239 1112 0.00      
27 B1 875 786 9.36      
28 B1 499 448 1.22      
29 B1 224 201 0.56      
30 B1 63 57 0.53      
31 B2 3298 2961 24.60      
32 B2 3231 2902 76.88      
33 B2 3215 2887 37.31      
34 B2 1627 1461 9.29      
35 B2 1593 1431 1.31      
36 B2 1564 1405 11.25      
37 B2 1527 1371 8.59      
38 B2 1230 1104 63.71      
39 B2 1101 988 9.92      
40 B2 1022 918 11.70      
41 B2 663 596 13.09      
42 B2 323 290 13.33      

Unscaled Zero Point Vibrational Energy (zpe) 33174.1 cm-1
Scaled (by 0.898) Zero Point Vibrational Energy (zpe) 29790.3 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 HF/CEP-31G*
ABC
0.29804 0.06411 0.05489

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.291
C2 0.000 0.000 0.086
C3 0.000 1.300 -0.727
C4 0.000 -1.300 -0.727
C5 0.000 2.568 0.140
C6 0.000 -2.568 0.140
H7 0.872 1.280 -1.385
H8 -0.872 1.280 -1.385
H9 -0.872 -1.280 -1.385
H10 0.872 -1.280 -1.385
H11 0.000 3.456 -0.494
H12 -0.880 2.600 0.783
H13 0.880 2.600 0.783
H14 0.000 -3.456 -0.494
H15 0.880 -2.600 0.783
H16 -0.880 -2.600 0.783

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14 H15 H16
O11.20522.40012.40012.81382.81383.09133.09133.09133.09133.88962.79142.79143.88962.79142.7914
C21.20521.53291.53292.56862.56862.13532.13532.13532.13533.50442.83192.83193.50442.83192.8319
C32.40011.53292.59971.53633.96391.09251.09252.80122.80122.16892.17772.17774.76174.27334.2733
C42.40011.53292.59973.96391.53632.80122.80121.09251.09254.76174.27334.27332.16892.17772.1777
C52.81382.56861.53633.96395.13592.17872.17874.22974.22971.09131.08941.08946.05745.28155.2815
C62.81382.56863.96391.53635.13594.22974.22972.17872.17876.05745.28155.28151.09131.08941.0894
H73.09132.13531.09252.80122.17874.22971.74393.09682.55912.50843.08362.53794.89714.44394.7766
H83.09132.13531.09252.80122.17874.22971.74392.55913.09682.50842.53793.08364.89714.77664.4439
H93.09132.13532.80121.09254.22972.17873.09682.55911.74394.89714.44394.77662.50843.08362.5379
H103.09132.13532.80121.09254.22972.17872.55913.09681.74394.89714.77664.44392.50842.53793.0836
H113.88963.50442.16894.76171.09136.05742.50842.50844.89714.89711.77061.77066.91236.25136.2513
H122.79142.83192.17774.27331.08945.28153.08362.53794.44394.77661.77061.75916.25135.48955.2000
H132.79142.83192.17774.27331.08945.28152.53793.08364.77664.44391.77061.75916.25135.20005.4895
H143.88963.50444.76172.16896.05741.09134.89714.89712.50842.50846.91236.25136.25131.77061.7706
H152.79142.83194.27332.17775.28151.08944.44394.77663.08362.53796.25135.48955.20001.77061.7591
H162.79142.83194.27332.17775.28151.08944.77664.44392.53793.08366.25135.20005.48951.77061.7591

picture of 3-Pentanone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C3 122.005 O1 C2 C4 122.005
C2 C3 C5 113.625 C2 C3 H7 107.662
C2 C3 H8 107.662 C2 C4 C6 113.625
C2 C4 H9 107.662 C2 C4 H10 107.662
C3 C2 C4 115.990 C3 C5 H11 110.106
C3 C5 H12 110.915 C3 C5 H13 110.915
C4 C6 H14 110.106 C4 C6 H15 110.915
C4 C6 H16 110.915 C5 C3 H7 110.812
C5 C3 H8 110.812 C6 C4 H9 110.812
C6 C4 H10 110.812 H7 C3 H8 105.903
H9 C4 H10 105.903 H11 C5 H12 108.573
H11 C5 H13 108.573 H12 C5 H13 107.673
H14 C6 H15 108.573 H14 C6 H16 108.573
H15 C6 H16 107.673
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.197      
2 C -0.166      
3 C -0.060      
4 C -0.060      
5 C -0.301      
6 C -0.301      
7 H 0.090      
8 H 0.090      
9 H 0.090      
10 H 0.090      
11 H 0.131      
12 H 0.115      
13 H 0.115      
14 H 0.131      
15 H 0.115      
16 H 0.115      


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 -3.057 3.057
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -36.644 0.000 0.000
y 0.000 -37.043 0.000
z 0.000 0.000 -41.909
Traceless
 xyz
x 2.833 0.000 0.000
y 0.000 2.234 0.000
z 0.000 0.000 -5.066
Polar
3z2-r2-10.132
x2-y20.399
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.306 0.000 0.000
y 0.000 8.877 0.000
z 0.000 0.000 7.915


<r2> (average value of r2) Å2
<r2> 178.971
(<r2>)1/2 13.378