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

using model chemistry: CCSD/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at CCSD/6-31G(2df,p)
 hartrees
Energy at 0K-271.146638
Energy at 298.15K 
HF Energy-270.064455
Nuclear repulsion energy239.361092
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 CCSD/6-31G(2df,p)
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 3179 3006 23.19      
2 A1 3101 2932 1.09      
3 A1 3082 2914 21.10      
4 A1 1842 1742 95.19      
5 A1 1530 1447 6.38      
6 A1 1500 1418 11.19      
7 A1 1448 1369 8.25      
8 A1 1387 1311 3.03      
9 A1 1138 1076 1.66      
10 A1 1040 984 1.97      
11 A1 801 757 1.35      
12 A1 412 390 0.37      
13 A1 196 185 0.55      
14 A2 3187 3013 0.00      
15 A2 3109 2939 0.00      
16 A2 1525 1442 0.00      
17 A2 1286 1216 0.00      
18 A2 1019 963 0.00      
19 A2 725 686 0.00      
20 A2 223 211 0.00      
21 A2 38 36 0.00      
22 B1 3187 3014 32.34      
23 B1 3118 2949 15.26      
24 B1 1525 1442 10.53      
25 B1 1328 1256 0.68      
26 B1 1162 1099 0.08      
27 B1 831 785 8.66      
28 B1 475 449 0.05      
29 B1 204 192 0.30      
30 B1 68 64 0.23      
31 B2 3179 3005 12.51      
32 B2 3100 2931 32.01      
33 B2 3074 2906 8.90      
34 B2 1531 1447 10.05      
35 B2 1489 1407 1.73      
36 B2 1447 1369 0.22      
37 B2 1428 1350 30.12      
38 B2 1166 1103 58.45      
39 B2 1037 980 9.18      
40 B2 990 936 13.48      
41 B2 634 599 6.98      
42 B2 313 296 12.28      

Unscaled Zero Point Vibrational Energy (zpe) 31525.0 cm-1
Scaled (by 0.9455) Zero Point Vibrational Energy (zpe) 29806.9 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 CCSD/6-31G(2df,p)
ABC
0.29828 0.06551 0.05591

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.274
C2 0.000 0.000 0.064
C3 0.000 1.292 -0.739
C4 0.000 -1.292 -0.739
C5 0.000 2.537 0.142
C6 0.000 -2.537 0.142
H7 0.872 1.275 -1.403
H8 -0.872 1.275 -1.403
H9 -0.872 -1.275 -1.403
H10 0.872 -1.275 -1.403
H11 0.000 3.441 -0.470
H12 -0.879 2.553 0.788
H13 0.879 2.553 0.788
H14 0.000 -3.441 -0.470
H15 0.879 -2.553 0.788
H16 -0.879 -2.553 0.788

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14 H15 H16
O11.21012.39142.39142.77772.77773.09083.09083.09083.09083.85782.74332.74333.85782.74332.7433
C21.21011.52061.52062.53782.53782.13042.13042.13042.13043.48252.79542.79543.48252.79542.7954
C32.39141.52062.58321.52503.92821.09641.09642.79112.79112.16662.16662.16664.74064.22894.2289
C42.39141.52062.58323.92821.52502.79112.79111.09641.09644.74064.22894.22892.16662.16662.1666
C52.77772.53781.52503.92825.07322.17682.17684.20454.20451.09201.09101.09106.00925.20515.2051
C62.77772.53783.92821.52505.07324.20454.20452.17682.17686.00925.20515.20511.09201.09101.0910
H73.09082.13041.09642.79112.17684.20451.74413.08982.55052.51483.08212.53644.88664.41084.7457
H83.09082.13041.09642.79112.17684.20451.74412.55053.08982.51482.53643.08214.88664.74574.4108
H93.09082.13042.79111.09644.20452.17683.08982.55051.74414.88664.41084.74572.51483.08212.5364
H103.09082.13042.79111.09644.20452.17682.55053.08981.74414.88664.74574.41082.51482.53643.0821
H113.85783.48252.16664.74061.09206.00922.51482.51484.88664.88661.77301.77306.88286.18756.1875
H122.74332.79542.16664.22891.09105.20513.08212.53644.41084.74571.77301.75806.18755.39995.1057
H132.74332.79542.16664.22891.09105.20512.53643.08214.74574.41081.77301.75806.18755.10575.3999
H143.85783.48254.74062.16666.00921.09204.88664.88662.51482.51486.88286.18756.18751.77301.7730
H152.74332.79544.22892.16665.20511.09104.41084.74573.08212.53646.18755.39995.10571.77301.7580
H162.74332.79544.22892.16665.20511.09104.74574.41082.53643.08216.18755.10575.39991.77301.7580

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 121.855 O1 C2 C4 121.855
C2 C3 C5 112.873 C2 C3 H7 107.887
C2 C3 H8 107.887 C2 C4 C6 112.873
C2 C4 H9 107.887 C2 C4 H10 107.887
C3 C2 C4 116.291 C3 C5 H11 110.677
C3 C5 H12 110.740 C3 C5 H13 110.740
C4 C6 H14 110.677 C4 C6 H15 110.740
C4 C6 H16 110.740 C5 C3 H7 111.228
C5 C3 H8 111.228 C6 C4 H9 111.228
C6 C4 H10 111.228 H7 C3 H8 105.377
H9 C4 H10 105.377 H11 C5 H12 108.617
H11 C5 H13 108.617 H12 C5 H13 107.348
H14 C6 H15 108.617 H14 C6 H16 108.617
H15 C6 H16 107.348
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability