return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: PBEPBE/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at PBEPBE/6-31+G**
 hartrees
Energy at 0K-271.447416
Energy at 298.15K 
HF Energy-271.447416
Nuclear repulsion energy237.192792
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 PBEPBE/6-31+G**
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 3073 3038 26.61      
2 A1 2994 2960 3.05      
3 A1 2963 2930 28.49      
4 A1 1727 1707 124.22      
5 A1 1455 1438 7.85      
6 A1 1413 1397 19.53      
7 A1 1368 1352 14.59      
8 A1 1301 1286 8.94      
9 A1 1086 1074 1.33      
10 A1 1002 990 2.75      
11 A1 763 754 3.22      
12 A1 400 395 0.44      
13 A1 188 186 0.95      
14 A2 3077 3042 0.00      
15 A2 2986 2952 0.00      
16 A2 1446 1430 0.00      
17 A2 1217 1203 0.00      
18 A2 964 953 0.00      
19 A2 685 677 0.00      
20 A2 193 191 0.00      
21 A2 25 25 0.00      
22 B1 3077 3042 37.81      
23 B1 2997 2963 16.27      
24 B1 1446 1430 18.70      
25 B1 1261 1246 1.06      
26 B1 1096 1083 0.55      
27 B1 797 788 10.81      
28 B1 451 446 0.31      
29 B1 172 170 0.19      
30 B1 68 67 0.26      
31 B2 3072 3037 12.42      
32 B2 2994 2960 49.97      
33 B2 2954 2920 14.47      
34 B2 1454 1438 13.26      
35 B2 1398 1382 3.41      
36 B2 1367 1352 2.53      
37 B2 1335 1320 37.69      
38 B2 1105 1092 53.96      
39 B2 976 965 15.27      
40 B2 951 940 23.00      
41 B2 601 594 1.34      
42 B2 294 291 11.58      

Unscaled Zero Point Vibrational Energy (zpe) 30095.6 cm-1
Scaled (by 0.9886) Zero Point Vibrational Energy (zpe) 29752.5 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 PBEPBE/6-31+G**
ABC
0.29315 0.06418 0.05480

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.301
C2 0.000 0.000 0.072
C3 0.000 1.299 -0.733
C4 0.000 -1.299 -0.733
C5 0.000 2.565 0.125
C6 0.000 -2.565 0.125
H7 0.877 1.274 -1.409
H8 -0.877 1.274 -1.409
H9 -0.877 -1.274 -1.409
H10 0.877 -1.274 -1.409
H11 0.000 3.466 -0.510
H12 -0.886 2.598 0.778
H13 0.886 2.598 0.778
H14 0.000 -3.466 -0.510
H15 0.886 -2.598 0.778
H16 -0.886 -2.598 0.778

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14 H15 H16
O11.22942.41392.41392.82202.82203.12103.12103.12103.12103.91072.79462.79463.91072.79462.7946
C21.22941.52851.52852.56552.56552.14172.14172.14172.14173.51452.83462.83463.51452.83462.8346
C32.41391.52852.59891.52863.95841.10791.10792.80182.80182.17802.18062.18064.77074.27334.2733
C42.41391.52852.59893.95841.52862.80182.80181.10791.10794.77074.27334.27332.17802.18062.1806
C52.82202.56551.52863.95845.12992.18822.18824.22624.22621.10191.10141.10146.06425.27945.2794
C62.82202.56553.95841.52865.12994.22624.22622.18822.18826.06425.27945.27941.10191.10141.1014
H73.12102.14171.10792.80182.18824.22621.75423.09372.54822.52643.10592.55714.90384.44764.7843
H83.12102.14171.10792.80182.18824.22621.75422.54823.09372.52642.55713.10594.90384.78434.4476
H93.12102.14172.80181.10794.22622.18823.09372.54821.75424.90384.44764.78432.52643.10592.5571
H103.12102.14172.80181.10794.22622.18822.54823.09371.75424.90384.78434.44762.52642.55713.1059
H113.91073.51452.17804.77071.10196.06422.52642.52644.90384.90381.78781.78786.93206.26266.2626
H122.79462.83462.18064.27331.10145.27943.10592.55714.44764.78431.78781.77176.26265.49045.1968
H132.79462.83462.18064.27331.10145.27942.55713.10594.78434.44761.78781.77176.26265.19685.4904
H143.91073.51454.77072.17806.06421.10194.90384.90382.52642.52646.93206.26266.26261.78781.7878
H152.79462.83464.27332.18065.27941.10144.44764.78433.10592.55716.26265.49045.19681.78781.7717
H162.79462.83464.27332.18065.27941.10144.78434.44762.55713.10596.26265.19685.49041.78781.7717

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 121.772 O1 C2 C4 121.772
C2 C3 C5 114.109 C2 C3 H7 107.580
C2 C3 H8 107.580 C2 C4 C6 114.109
C2 C4 H9 107.580 C2 C4 H10 107.580
C3 C2 C4 116.455 C3 C5 H11 110.735
C3 C5 H12 110.978 C3 C5 H13 110.978
C4 C6 H14 110.735 C4 C6 H15 110.978
C4 C6 H16 110.978 C5 C3 H7 111.187
C5 C3 H8 111.187 C6 C4 H9 111.187
C6 C4 H10 111.187 H7 C3 H8 104.679
H9 C4 H10 104.679 H11 C5 H12 108.470
H11 C5 H13 108.470 H12 C5 H13 107.084
H14 C6 H15 108.470 H14 C6 H16 108.470
H15 C6 H16 107.084
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.367      
2 C 0.119      
3 C -0.059      
4 C -0.059      
5 C -0.724      
6 C -0.724      
7 H 0.183      
8 H 0.183      
9 H 0.183      
10 H 0.183      
11 H 0.164      
12 H 0.188      
13 H 0.188      
14 H 0.164      
15 H 0.188      
16 H 0.188      


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 -2.793 2.793
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -37.631 0.000 0.000
y 0.000 -37.366 0.000
z 0.000 0.000 -42.034
Traceless
 xyz
x 2.069 0.000 0.000
y 0.000 2.467 0.000
z 0.000 0.000 -4.535
Polar
3z2-r2-9.071
x2-y2-0.265
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.680 0.000 0.000
y 0.000 11.331 0.000
z 0.000 0.000 9.929


<r2> (average value of r2) Å2
<r2> 218.415
(<r2>)1/2 14.779