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: MP2/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2/aug-cc-pVDZ
 hartrees
Energy at 0K-270.992658
Energy at 298.15K 
HF Energy-270.064610
Nuclear repulsion energy237.878621
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 MP2/aug-cc-pVDZ
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 3169 3039 23.14      
2 A1 3077 2951 1.72      
3 A1 3057 2931 25.91      
4 A1 1727 1656 84.90      
5 A1 1488 1427 5.14      
6 A1 1449 1390 16.17      
7 A1 1399 1341 9.78      
8 A1 1342 1287 2.90      
9 A1 1122 1076 0.93      
10 A1 1029 987 2.20      
11 A1 788 756 2.41      
12 A1 411 394 0.37      
13 A1 194 186 0.91      
14 A2 3174 3044 0.00      
15 A2 3094 2967 0.00      
16 A2 1484 1423 0.00      
17 A2 1254 1203 0.00      
18 A2 992 951 0.00      
19 A2 705 676 0.00      
20 A2 223 213 0.00      
21 A2 25i 24i 0.00      
22 B1 3174 3044 38.05      
23 B1 3104 2977 14.98      
24 B1 1484 1423 13.27      
25 B1 1298 1245 0.91      
26 B1 1128 1082 0.20      
27 B1 810 777 6.51      
28 B1 462 443 0.02      
29 B1 205 196 0.30      
30 B1 65 63 0.31      
31 B2 3169 3039 14.58      
32 B2 3076 2950 42.99      
33 B2 3049 2924 11.92      
34 B2 1489 1428 11.45      
35 B2 1437 1378 1.88      
36 B2 1400 1342 5.97      
37 B2 1388 1331 29.63      
38 B2 1146 1099 44.62      
39 B2 1017 975 17.47      
40 B2 981 941 10.41      
41 B2 617 592 4.59      
42 B2 306 293 11.24      

Unscaled Zero Point Vibrational Energy (zpe) 30977.2 cm-1
Scaled (by 0.959) Zero Point Vibrational Energy (zpe) 29707.1 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 MP2/aug-cc-pVDZ
ABC
0.29320 0.06488 0.05532

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/aug-cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.295
C2 0.000 0.000 0.064
C3 0.000 1.295 -0.739
C4 0.000 -1.295 -0.739
C5 0.000 2.550 0.133
C6 0.000 -2.550 0.133
H7 0.880 1.271 -1.407
H8 -0.880 1.271 -1.407
H9 -0.880 -1.271 -1.407
H10 0.880 -1.271 -1.407
H11 0.000 3.455 -0.493
H12 -0.887 2.572 0.783
H13 0.887 2.572 0.783
H14 0.000 -3.455 -0.493
H15 0.887 -2.572 0.783
H16 -0.887 -2.572 0.783

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14 H15 H16
O11.23112.41102.41102.80232.80233.11333.11333.11333.11333.89052.76862.76863.89052.76862.7686
C21.23111.52341.52342.55092.55092.13402.13402.13402.13403.49972.81412.81413.49972.81412.8141
C32.41101.52342.58951.52823.94231.10521.10522.79362.79362.17422.17562.17564.75624.24904.2490
C42.41101.52342.58953.94231.52822.79362.79361.10521.10524.75624.24904.24902.17422.17562.1756
C52.80232.55091.52823.94235.10002.18682.18684.21274.21271.10061.09971.09976.03765.23885.2388
C62.80232.55093.94231.52825.10004.21274.21272.18682.18686.03765.23885.23881.10061.09971.0997
H73.11332.13401.10522.79362.18684.21271.75943.09162.54212.52583.10012.54744.89354.42344.7632
H83.11332.13401.10522.79362.18684.21271.75942.54213.09162.52582.54743.10014.89354.76324.4234
H93.11332.13402.79361.10524.21272.18683.09162.54211.75944.89354.42344.76322.52583.10012.5474
H103.11332.13402.79361.10524.21272.18682.54213.09161.75944.89354.76324.42342.52582.54743.1001
H113.89053.49972.17424.75621.10066.03762.52582.52584.89354.89351.78731.78736.91026.22436.2243
H122.76862.81412.17564.24901.09975.23883.10012.54744.42344.76321.78731.77396.22435.44155.1443
H132.76862.81412.17564.24901.09975.23882.54743.10014.76324.42341.78731.77396.22435.14435.4415
H143.89053.49974.75622.17426.03761.10064.89354.89352.52582.52586.91026.22436.22431.78731.7873
H152.76862.81414.24902.17565.23881.09974.42344.76323.10012.54746.22435.44155.14431.78731.7739
H162.76862.81414.24902.17565.23881.09974.76324.42342.54743.10016.22435.14435.44151.78731.7739

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 121.796 O1 C2 C4 121.796
C2 C3 C5 113.427 C2 C3 H7 107.489
C2 C3 H8 107.489 C2 C4 C6 113.427
C2 C4 H9 107.489 C2 C4 H10 107.489
C3 C2 C4 116.408 C3 C5 H11 110.547
C3 C5 H12 110.706 C3 C5 H13 110.706
C4 C6 H14 110.547 C4 C6 H15 110.706
C4 C6 H16 110.706 C5 C3 H7 111.265
C5 C3 H8 111.265 C6 C4 H9 111.265
C6 C4 H10 111.265 H7 C3 H8 105.492
H9 C4 H10 105.492 H11 C5 H12 108.639
H11 C5 H13 108.639 H12 C5 H13 107.512
H14 C6 H15 108.639 H14 C6 H16 108.639
H15 C6 H16 107.512
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability