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

using model chemistry: MP3/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP3/6-31G*
 hartrees
Energy at 0K-270.899255
Energy at 298.15K-270.909836
HF Energy-270.031055
Nuclear repulsion energy235.816307
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 MP3/6-31G*
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' 3223 3025 7.84      
2 A' 3179 2983 31.68      
3 A' 3121 2929 14.93      
4 A' 3104 2913 4.51      
5 A' 3095 2905 23.31      
6 A' 3074 2885 10.95      
7 A' 1884 1768 109.70      
8 A' 1568 1472 5.95      
9 A' 1553 1457 2.27      
10 A' 1534 1440 18.39      
11 A' 1525 1432 0.48      
12 A' 1480 1389 15.19      
13 A' 1469 1379 36.43      
14 A' 1448 1359 19.14      
15 A' 1372 1288 16.90      
16 A' 1235 1159 52.33      
17 A' 1170 1099 0.33      
18 A' 1099 1032 0.13      
19 A' 1003 942 1.88      
20 A' 944 886 6.25      
21 A' 862 809 0.20      
22 A' 614 576 15.62      
23 A' 405 380 1.13      
24 A' 352 330 3.27      
25 A' 182 171 4.65      
26 A" 3176 2981 60.29      
27 A" 3174 2979 2.11      
28 A" 3155 2961 0.01      
29 A" 3107 2917 8.31      
30 A" 1561 1465 6.78      
31 A" 1535 1441 12.13      
32 A" 1364 1280 0.15      
33 A" 1299 1219 0.00      
34 A" 1187 1114 0.77      
35 A" 1015 952 0.92      
36 A" 872 818 0.29      
37 A" 751 705 3.61      
38 A" 485 455 0.19      
39 A" 254 238 0.03      
40 A" 112 105 0.02      
41 A" 98 92 0.76      
42 A" 40 38 0.34      

Unscaled Zero Point Vibrational Energy (zpe) 31837.9 cm-1
Scaled (by 0.9386) Zero Point Vibrational Energy (zpe) 29883.0 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 MP3/6-31G*
ABC
0.27938 0.05986 0.05116

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.424 1.326 0.000
C2 -1.459 0.141 0.000
C3 0.000 0.587 0.000
C4 0.991 -0.565 0.000
C5 2.461 -0.199 0.000
O6 0.624 -1.724 0.000
H7 -3.464 0.986 0.000
H8 -2.277 1.955 0.885
H9 -2.277 1.955 -0.885
H10 -1.638 -0.494 0.874
H11 -1.638 -0.494 -0.874
H12 0.214 1.220 -0.873
H13 0.214 1.220 0.873
H14 3.062 -1.109 0.000
H15 2.702 0.404 -0.882
H16 2.702 0.404 0.882

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 O6 H7 H8 H9 H10 H11 H12 H13 H14 H15 H16
C11.52822.53443.90315.11744.31171.09421.09561.09562.16622.16622.78072.78076.00225.28315.2831
C21.52821.52542.54903.93442.79562.17622.17792.17791.09491.09492.17362.17364.69054.26194.2619
C32.53441.52541.51892.58322.39343.48732.80022.80022.14822.14821.09991.09993.50022.84872.8487
C43.90312.54901.51891.51521.21594.71704.22034.22032.77102.77102.13362.13362.14182.15582.1558
C55.11743.93442.58321.51522.38776.04255.27945.27944.20154.20152.79762.79761.09081.09551.0955
O64.31172.79562.39341.21592.38774.90464.76804.76802.71902.71903.09823.09822.51463.10283.1028
H71.09422.17623.48734.71706.04254.90461.76951.76952.50762.50763.78753.78756.85436.25676.2567
H81.09562.17792.80024.22035.27944.76801.76951.76942.53093.08193.13622.59706.21935.50695.2158
H91.09562.17792.80024.22035.27944.76801.76951.76943.08192.53092.59703.13626.21935.21585.5069
H102.16621.09492.14822.77104.20152.71902.50762.53093.08191.74763.06912.52324.82014.76774.4325
H112.16621.09492.14822.77104.20152.71902.50763.08192.53091.74762.52323.06914.82014.43254.7677
H122.78072.17361.09992.13362.79763.09823.78753.13622.59703.06912.52321.74693.78172.61933.1533
H132.78072.17361.09992.13362.79763.09823.78752.59703.13622.52323.06911.74693.78173.15332.6193
H146.00224.69053.50022.14181.09082.51466.85436.21936.21934.82014.82013.78173.78171.78791.7879
H155.28314.26192.84872.15581.09553.10286.25675.50695.21584.76774.43252.61933.15331.78791.7645
H165.28314.26192.84872.15581.09553.10286.25675.21585.50694.43254.76773.15332.61931.78791.7645

picture of 2-Pentanone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 112.189 C1 C2 H10 110.249
C1 C2 H11 110.249 C2 C1 H7 111.080
C2 C1 H8 111.134 C2 C1 H9 111.134
C2 C3 C4 113.717 C2 C3 H12 110.730
C2 C3 H13 110.730 C3 C2 H10 109.027
C3 C2 H11 109.027 C3 C4 C5 116.728
C3 C4 O6 121.738 C4 C3 H12 108.057
C4 C3 H13 108.057 C4 C5 H14 109.467
C4 C5 H15 110.298 C4 C5 H16 110.298
C5 C4 O6 121.534 H7 C1 H8 107.810
H7 C1 H9 107.810 H8 C1 H9 107.713
H10 C2 H11 105.894 H12 C3 H13 105.143
H14 C5 H15 109.728 H14 C5 H16 109.728
H15 C5 H16 107.294
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability