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All results from a given calculation for C5H8O (Cyclopentanone)

using model chemistry: MP3/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at MP3/TZVP
 hartrees
Energy at 0K-269.902535
Energy at 298.15K-269.912248
HF Energy-268.953254
Nuclear repulsion energy236.008360
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/TZVP
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 3177 2971 5.27      
2 A 3163 2958 22.09      
3 A 3099 2898 21.98      
4 A 3096 2895 1.23      
5 A 1899 1776 219.89      
6 A 1540 1440 1.03      
7 A 1487 1390 0.10      
8 A 1388 1298 0.14      
9 A 1349 1262 0.90      
10 A 1253 1171 0.00      
11 A 1207 1129 0.68      
12 A 1062 993 0.62      
13 A 988 924 0.12      
14 A 923 863 0.36      
15 A 840 786 1.12      
16 A 732 685 0.76      
17 A 574 537 4.29      
18 A 240 225 0.11      
19 B 3179 2973 28.52      
20 B 3167 2962 31.27      
21 B 3103 2902 39.25      
22 B 3096 2896 8.05      
23 B 1522 1423 4.27      
24 B 1487 1391 16.04      
25 B 1381 1291 1.27      
26 B 1337 1250 11.80      
27 B 1282 1199 2.40      
28 B 1199 1122 42.92      
29 B 1185 1109 16.49      
30 B 994 929 10.03      
31 B 948 887 0.43      
32 B 868 812 6.87      
33 B 592 554 1.85      
34 B 486 455 8.23      
35 B 457 427 2.60      
36 B 92 86 4.86      

Unscaled Zero Point Vibrational Energy (zpe) 27195.3 cm-1
Scaled (by 0.9352) Zero Point Vibrational Energy (zpe) 25433.0 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/TZVP
ABC
0.22166 0.11248 0.08075

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/TZVP

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 2.121
C2 0.000 0.000 0.921
C3 0.000 1.240 0.030
C4 0.000 -1.240 0.030
C5 0.310 0.705 -1.372
C6 -0.310 -0.705 -1.372
H7 -1.005 1.670 0.070
H8 1.005 -1.670 0.070
H9 0.697 1.985 0.409
H10 -0.697 -1.985 0.409
H11 -0.082 1.336 -2.168
H12 0.082 -1.336 -2.168
H13 1.391 0.628 -1.509
H14 -1.391 -0.628 -1.509

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
O11.20082.43132.43133.57743.57742.82942.82942.71322.71324.49314.49313.93823.9382
C21.20081.52681.52682.41872.41872.12632.12632.16552.16553.36603.36602.86932.8693
C32.43131.52682.48061.53272.41811.09363.07891.08823.32162.20143.38762.16342.7918
C42.43131.52682.48062.41811.53273.07891.09363.32161.08823.38762.20142.79182.1634
C53.57742.41871.53272.41811.54082.17732.86412.22683.37991.08852.20291.09252.1658
C63.57742.41872.41811.53271.54082.86412.17733.37992.22682.20291.08852.16581.0925
H72.82942.12631.09363.07892.17732.86413.89771.76393.68352.44373.90193.05322.8145
H82.82942.12633.07891.09362.86412.17733.89773.68351.76393.90192.44372.81453.0532
H92.71322.16551.08823.32162.22683.37991.76393.68354.20822.76844.24832.44983.8557
H102.71322.16553.32161.08823.37992.22683.68351.76394.20824.24832.76843.85572.4498
H114.49313.36602.20143.38761.08852.20292.44373.90192.76844.24832.67771.76232.4509
H124.49313.36603.38762.20142.20291.08853.90192.44374.24832.76842.67772.45091.7623
H133.93822.86932.16342.79181.09252.16583.05322.81452.44983.85571.76232.45093.0528
H143.93822.86932.79182.16342.16581.09252.81453.05323.85572.44982.45091.76233.0528

picture of Cyclopentanone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C3 125.675 O1 C2 C4 125.675
C2 C3 C5 104.475 C2 C3 H7 107.317
C2 C3 H9 110.694 C2 C4 C6 104.475
C2 C4 H8 107.317 C2 C4 H10 110.694
C3 C2 C4 108.650 C3 C5 C6 103.772
C3 C5 H11 113.163 C3 C5 H13 109.861
C4 C6 C5 103.772 C4 C6 H12 113.163
C4 C6 H14 109.861 C5 C3 H7 110.891
C5 C3 H9 115.303 C5 C6 H12 112.691
C5 C6 H14 109.491 C6 C4 H8 110.891
C6 C4 H10 115.303 C6 C5 H11 112.691
C6 C5 H13 109.491 H7 C3 H9 107.892
H8 C4 H10 107.892 H11 C5 H13 107.805
H12 C6 H14 107.805
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability