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All results from a given calculation for C5H8O (Cyclopentanone)

using model chemistry: MP3=FULL/6-31G*

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=FULL/6-31G*
 hartrees
Energy at 0K-269.744407
Energy at 298.15K-269.754134
HF Energy-268.865090
Nuclear repulsion energy235.525016
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=FULL/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 3181 2984 4.95      
2 A 3169 2974 16.72      
3 A 3109 2917 19.37      
4 A 3104 2912 3.74      
5 A 1919 1800 186.69      
6 A 1574 1477 1.48      
7 A 1520 1427 0.10      
8 A 1396 1310 0.11      
9 A 1358 1275 1.41      
10 A 1266 1188 0.11      
11 A 1222 1147 0.37      
12 A 1075 1008 0.65      
13 A 1000 938 0.17      
14 A 935 877 0.41      
15 A 850 797 0.35      
16 A 745 699 0.77      
17 A 584 548 4.52      
18 A 244 229 0.05      
19 B 3182 2986 24.43      
20 B 3173 2978 22.73      
21 B 3113 2921 31.75      
22 B 3103 2912 6.24      
23 B 1560 1463 5.72      
24 B 1521 1427 19.77      
25 B 1391 1305 2.01      
26 B 1350 1266 11.34      
27 B 1296 1216 2.15      
28 B 1221 1146 64.49      
29 B 1207 1132 1.40      
30 B 1004 942 10.66      
31 B 958 899 0.78      
32 B 879 825 7.65      
33 B 601 564 2.39      
34 B 483 453 6.20      
35 B 463 434 4.86      
36 B 98 92 5.00      

Unscaled Zero Point Vibrational Energy (zpe) 27426.7 cm-1
Scaled (by 0.9383) Zero Point Vibrational Energy (zpe) 25734.4 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=FULL/6-31G*
ABC
0.22111 0.11203 0.08044

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 2.128
C2 0.000 0.000 0.919
C3 0.000 1.241 0.030
C4 0.000 -1.241 0.030
C5 0.308 0.706 -1.374
C6 -0.308 -0.706 -1.374
H7 -1.005 1.681 0.073
H8 1.005 -1.681 0.073
H9 0.700 1.989 0.410
H10 -0.700 -1.989 0.410
H11 -0.086 1.340 -2.172
H12 0.086 -1.340 -2.172
H13 1.392 0.635 -1.516
H14 -1.392 -0.635 -1.516

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
O11.20932.43792.43793.58563.58562.83892.83892.72012.72014.50534.50533.95283.9528
C21.20931.52651.52652.41862.41862.13342.13342.16912.16913.37023.37022.87622.8762
C32.43791.52652.48171.53302.41971.09783.09041.09283.32652.20603.39362.16722.8013
C42.43791.52652.48172.41971.53303.09041.09783.32651.09283.39362.20602.80132.1672
C53.58562.41861.53302.41971.54072.18332.87742.23163.38531.09312.20761.09642.1701
C63.58562.41862.41971.53301.54072.87742.18333.38532.23162.20761.09312.17011.0964
H72.83892.13341.09783.09042.18332.87743.91731.76473.69822.44993.91933.06072.8357
H82.83892.13343.09041.09782.87742.18333.91733.69821.76473.91932.44992.83573.0607
H92.72012.16911.09283.32652.23163.38531.76473.69824.21702.77624.25732.45423.8694
H102.72012.16913.32651.09283.38532.23163.69821.76474.21704.25732.77623.86942.4542
H114.50533.37022.20603.39361.09312.20762.44993.91932.77624.25732.68541.76492.4567
H124.50533.37023.39362.20602.20761.09313.91932.44994.25732.77622.68542.45671.7649
H133.95282.87622.16722.80131.09642.17013.06072.83572.45423.86941.76492.45673.0606
H143.95282.87622.80132.16722.17011.09642.83573.06073.86942.45422.45671.76493.0606

picture of Cyclopentanone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C3 125.625 O1 C2 C4 125.625
C2 C3 C5 104.463 C2 C3 H7 107.646
C2 C3 H9 110.722 C2 C4 C6 104.463
C2 C4 H8 107.646 C2 C4 H10 110.722
C3 C2 C4 108.749 C3 C5 C6 103.856
C3 C5 H11 113.220 C3 C5 H13 109.907
C4 C6 C5 103.856 C4 C6 H12 113.220
C4 C6 H14 109.907 C5 C3 H7 111.093
C5 C3 H9 115.372 C5 C6 H12 112.792
C5 C6 H14 109.605 C6 C4 H8 111.093
C6 C4 H10 115.372 C6 C5 H11 112.792
C6 C5 H13 109.605 H7 C3 H9 107.327
H8 C4 H10 107.327 H11 C5 H13 107.428
H12 C6 H14 107.428
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability