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-pVTZ

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-pVTZ
 hartrees
Energy at 0K-271.241121
Energy at 298.15K 
HF Energy-270.132218
Nuclear repulsion energy239.723093
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-pVTZ
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 3172 3023 18.42      
2 A1 3084 2938 1.98      
3 A1 3066 2922 19.96      
4 A1 1749 1667 87.89      
5 A1 1518 1446 5.31      
6 A1 1472 1403 19.39      
7 A1 1422 1355 9.72      
8 A1 1358 1294 4.11      
9 A1 1130 1077 1.54      
10 A1 1035 987 1.97      
11 A1 793 756 2.73      
12 A1 412 392 0.37      
13 A1 195 186 0.93      
14 A2 3176 3026 0.00      
15 A2 3099 2953 0.00      
16 A2 1513 1441 0.00      
17 A2 1273 1213 0.00      
18 A2 1009 961 0.00      
19 A2 711 678 0.00      
20 A2 223 212 0.00      
21 A2 15 14 0.00      
22 B1 3176 3027 29.84      
23 B1 3109 2963 10.32      
24 B1 1513 1442 14.39      
25 B1 1317 1255 0.66      
26 B1 1145 1091 0.22      
27 B1 821 782 7.73      
28 B1 462 441 0.00      
29 B1 205 196 0.33      
30 B1 67 63 0.32      
31 B2 3172 3023 11.96      
32 B2 3083 2938 38.32      
33 B2 3058 2914 11.14      
34 B2 1518 1446 10.94      
35 B2 1460 1391 2.66      
36 B2 1421 1354 0.33      
37 B2 1398 1332 35.55      
38 B2 1154 1100 48.91      
39 B2 1024 976 13.70      
40 B2 986 939 15.53      
41 B2 624 594 4.16      
42 B2 308 294 11.20      

Unscaled Zero Point Vibrational Energy (zpe) 31222.6 cm-1
Scaled (by 0.9529) Zero Point Vibrational Energy (zpe) 29752.0 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-pVTZ
ABC
0.29759 0.06585 0.05613

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.285
C2 0.000 0.000 0.065
C3 0.000 1.286 -0.735
C4 0.000 -1.286 -0.735
C5 0.000 2.532 0.133
C6 0.000 -2.532 0.133
H7 0.870 1.261 -1.397
H8 -0.870 1.261 -1.397
H9 -0.870 -1.261 -1.397
H10 0.870 -1.261 -1.397
H11 0.000 3.429 -0.484
H12 -0.877 2.552 0.777
H13 0.877 2.552 0.777
H14 0.000 -3.429 -0.484
H15 0.877 -2.552 0.777
H16 -0.877 -2.552 0.777

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14 H15 H16
O11.22012.39462.39462.78182.78183.08913.08913.08913.08913.85862.74562.74563.85862.74562.7456
C21.22011.51431.51432.53262.53262.11802.11802.11802.11803.47282.79032.79033.47282.79032.7903
C32.39461.51432.57131.51843.91471.09381.09382.77182.77182.15822.15792.15794.72154.21644.2164
C42.39461.51432.57133.91471.51842.77182.77181.09381.09384.72154.21644.21642.15822.15792.1579
C52.78182.53261.51843.91475.06352.17062.17064.18144.18141.08881.08811.08815.99275.19845.1984
C62.78182.53263.91471.51845.06354.18144.18142.17062.17065.99275.19845.19841.08881.08811.0881
H73.08912.11801.09382.77182.17064.18141.74083.06492.52252.50833.07292.52784.85714.38894.7239
H83.08912.11801.09382.77182.17064.18141.74082.52253.06492.50832.52783.07294.85714.72394.3889
H93.08912.11802.77181.09384.18142.17063.06492.52251.74084.85714.38894.72392.50833.07292.5278
H103.08912.11802.77181.09384.18142.17062.52253.06491.74084.85714.72394.38892.50832.52783.0729
H113.85863.47282.15824.72151.08885.99272.50832.50834.85714.85711.76851.76856.85846.17476.1747
H122.74562.79032.15794.21641.08815.19843.07292.52784.38894.72391.76851.75376.17475.39615.1031
H132.74562.79032.15794.21641.08815.19842.52783.07294.72394.38891.76851.75376.17475.10315.3961
H143.85863.47284.72152.15825.99271.08884.85714.85712.50832.50836.85846.17476.17471.76851.7685
H152.74562.79034.21642.15795.19841.08814.38894.72393.07292.52786.17475.39615.10311.76851.7537
H162.74562.79034.21642.15795.19841.08814.72394.38892.52783.07296.17475.10315.39611.76851.7537

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 121.894 O1 C2 C4 121.894
C2 C3 C5 113.258 C2 C3 H7 107.508
C2 C3 H8 107.508 C2 C4 C6 113.258
C2 C4 H9 107.508 C2 C4 H10 107.508
C3 C2 C4 116.211 C3 C5 H11 110.670
C3 C5 H12 110.680 C3 C5 H13 110.680
C4 C6 H14 110.670 C4 C6 H15 110.680
C4 C6 H16 110.680 C5 C3 H7 111.354
C5 C3 H8 111.354 C6 C4 H9 111.354
C6 C4 H10 111.354 H7 C3 H8 105.451
H9 C4 H10 105.451 H11 C5 H12 108.665
H11 C5 H13 108.665 H12 C5 H13 107.384
H14 C6 H15 108.665 H14 C6 H16 108.665
H15 C6 H16 107.384
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability