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All results from a given calculation for C5H10O (2-Pentanone)

using model chemistry: MP2/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 2 yes C1 1A

Conformer 1 (CS)

Jump to S1C2
Vibrational Frequencies calculated at MP2/6-311G**
Rotational Constants (cm-1) from geometry optimized at MP2/6-311G**
See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-311G**
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C1)

Jump to S1C1
Energy calculated at MP2/6-311G**
 hartrees
Energy at 0K-271.039224
Energy at 298.15K-271.049771
HF Energy-270.099988
Nuclear repulsion energy235.753253
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 MP2/6-311G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A 3202 3042 8.81      
2 A 3162 3005 39.13      
3 A 3162 3004 51.34      
4 A 3161 3004 0.60      
5 A 3140 2983 0.03      
6 A 3098 2944 10.12      
7 A 3096 2942 15.02      
8 A 3077 2924 4.91      
9 A 3069 2916 25.96      
10 A 3053 2901 11.63      
11 A 1779 1691 89.75      
12 A 1527 1451 4.99      
13 A 1522 1446 6.91      
14 A 1508 1433 2.54      
15 A 1499 1424 11.11      
16 A 1488 1414 14.48      
17 A 1469 1396 5.28      
18 A 1431 1360 8.69      
19 A 1419 1348 39.88      
20 A 1397 1327 25.57      
21 A 1341 1274 1.39      
22 A 1329 1263 18.99      
23 A 1267 1203 0.00      
24 A 1197 1137 51.79      
25 A 1148 1091 0.12      
26 A 1147 1090 0.47      
27 A 1085 1031 0.25      
28 A 986 937 0.69      
29 A 976 928 4.09      
30 A 928 882 8.29      
31 A 849 807 0.92      
32 A 835 794 0.92      
33 A 734 698 2.47      
34 A 601 571 11.99      
35 A 471 447 0.41      
36 A 393 374 0.92      
37 A 343 326 2.65      
38 A 250 238 0.03      
39 A 175 167 4.01      
40 A 110 104 0.08      
41 A 98 93 0.47      
42 A 58 55 0.52      

Unscaled Zero Point Vibrational Energy (zpe) 31289.1 cm-1
Scaled (by 0.9502) Zero Point Vibrational Energy (zpe) 29730.9 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 MP2/6-311G**
ABC
0.27675 0.05996 0.05122

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-311G**

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.746 -0.290 -0.005
C2 -1.399 0.427 0.074
C3 -0.226 -0.536 -0.068
C4 1.133 0.145 -0.024
C5 2.338 -0.775 0.042
O6 1.246 1.358 -0.033
H7 -3.576 0.415 0.104
H8 -2.861 -0.800 -0.967
H9 -2.837 -1.042 0.786
H10 -1.325 1.189 -0.707
H11 -1.308 0.957 1.028
H12 -0.252 -1.308 0.714
H13 -0.289 -1.081 -1.021
H14 3.249 -0.205 -0.146
H15 2.391 -1.222 1.040
H16 2.244 -1.591 -0.680

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 O6 H7 H8 H9 H10 H11 H12 H13 H14 H15 H16
C11.52822.53293.90365.10754.31921.09371.09491.09492.16782.16602.78832.77435.99725.32465.2010
C21.52821.52402.54933.92522.80632.17712.17382.17491.09401.09502.17542.16924.69534.24414.2319
C32.53291.52401.52122.57762.39943.48612.79612.79292.14322.14521.09881.09983.49152.92352.7547
C43.90362.54931.52121.51741.21764.71814.21084.22202.75642.77912.13892.12622.14782.14122.1632
C55.10753.92522.57761.51742.39656.03245.29565.23504.22314.15502.72852.85061.09051.09551.0939
O64.31922.80632.39941.21762.39654.91524.73224.80632.66362.79433.14753.04672.54213.01923.1795
H71.09372.17713.48614.71816.03244.91521.76991.76992.51422.50843.79293.78216.85696.25756.2052
H81.09492.17382.79614.21085.29564.73221.76991.76972.52613.07873.14482.58746.19295.63795.1734
H91.09492.17492.79294.22205.23504.80631.76991.76973.08052.52862.59953.12396.21315.23715.3164
H102.16781.09402.14322.75644.22312.66362.51422.52613.08051.74983.06672.51534.81424.76174.5242
H112.16601.09502.14522.77914.15502.79432.50843.07872.52861.74982.51873.06474.84654.29304.6932
H122.78832.17541.09882.13892.72853.14753.79293.14482.59953.06672.51871.75073.76982.66432.8729
H132.77432.16921.09982.12622.85063.04673.78212.58743.12392.51533.06471.75073.74843.38412.6062
H145.99724.69533.49152.14781.09052.54216.85696.19296.21314.81424.84653.76983.74841.78261.7938
H155.32464.24412.92352.14121.09553.01926.25755.63795.23714.76174.29302.66433.38411.78261.7655
H165.20104.23192.75472.16321.09393.17956.20525.17345.31644.52424.69322.87292.60621.79381.7655

picture of 2-Pentanone state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 112.169 C1 C2 H10 110.434
C1 C2 H11 110.232 C2 C1 H7 111.193
C2 C1 H8 110.854 C2 C1 H9 110.947
C2 C3 C4 113.680 C2 C3 H12 111.039
C2 C3 H13 110.479 C3 C2 H10 108.784
C3 C2 H11 108.884 C3 C4 C5 116.052
C3 C4 O6 121.949 C4 C3 H12 108.369
C4 C3 H13 107.334 C4 C5 H14 109.807
C4 C5 H15 108.999 C4 C5 H16 110.824
C5 C4 O6 121.997 H7 C1 H8 107.937
H7 C1 H9 107.936 H8 C1 H9 107.834
H10 C2 H11 106.140 H12 C3 H13 105.550
H14 C5 H15 109.266 H14 C5 H16 110.405
H15 C5 H16 107.487
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability