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All results from a given calculation for C5H8O (Cyclopentanone)

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

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at MP2=FULL/6-311G*
 hartrees
Energy at 0K-269.902300
Energy at 298.15K-269.911992
HF Energy-268.918304
Nuclear repulsion energy235.682041
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=FULL/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 3164 2996 7.54      
2 A 3153 2986 12.86      
3 A 3090 2927 22.16      
4 A 3082 2919 5.35      
5 A 1808 1713 159.69      
6 A 1548 1466 2.79      
7 A 1491 1412 0.25      
8 A 1370 1298 0.03      
9 A 1332 1261 4.77      
10 A 1249 1183 0.10      
11 A 1201 1138 0.04      
12 A 1065 1009 0.95      
13 A 983 931 0.48      
14 A 930 881 0.76      
15 A 837 792 0.53      
16 A 728 690 1.49      
17 A 567 537 4.21      
18 A 255 241 0.11      
19 B 3167 3000 30.35      
20 B 3158 2991 18.84      
21 B 3093 2929 31.63      
22 B 3082 2919 8.64      
23 B 1535 1454 7.76      
24 B 1492 1413 24.07      
25 B 1364 1292 0.61      
26 B 1327 1257 9.06      
27 B 1276 1209 6.58      
28 B 1189 1126 33.83      
29 B 1183 1120 32.25      
30 B 996 943 14.61      
31 B 941 892 0.75      
32 B 864 818 10.23      
33 B 590 559 2.23      
34 B 476 451 4.41      
35 B 453 429 3.84      
36 B 96 91 4.17      

Unscaled Zero Point Vibrational Energy (zpe) 27066.9 cm-1
Scaled (by 0.9471) Zero Point Vibrational Energy (zpe) 25635.1 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=FULL/6-311G*
ABC
0.22207 0.11188 0.08060

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 2.132
C2 0.000 0.000 0.920
C3 0.000 1.238 0.024
C4 0.000 -1.238 0.024
C5 0.318 0.701 -1.372
C6 -0.318 -0.701 -1.372
H7 -1.009 1.668 0.059
H8 1.009 -1.668 0.059
H9 0.688 1.992 0.412
H10 -0.688 -1.992 0.412
H11 -0.059 1.337 -2.176
H12 0.059 -1.337 -2.176
H13 1.402 0.611 -1.501
H14 -1.402 -0.611 -1.501

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
O11.21182.44412.44413.58693.58692.84562.84562.72002.72004.51064.51063.94143.9414
C21.21181.52791.52792.41732.41732.13102.13102.16792.16793.37253.37252.86342.8634
C32.44411.52792.47571.52912.40981.09743.07601.09223.32522.20313.38712.16422.7769
C42.44411.52792.47572.40981.52913.07601.09743.32521.09223.38712.20312.77692.1642
C53.58692.41731.52912.40981.53852.17752.85182.23333.38301.09242.20561.09552.1669
C63.58692.41732.40981.52911.53852.85182.17753.38302.23332.20561.09242.16691.0955
H72.84562.13101.09743.07602.17752.85183.89851.76373.69092.45063.89373.05962.7894
H82.84562.13103.07601.09742.85182.17753.89853.69091.76373.89372.45062.78943.0596
H92.72002.16791.09223.32522.23333.38301.76373.69094.21522.77234.26342.46503.8479
H102.72002.16793.32521.09223.38302.23333.69091.76374.21524.26342.77233.84792.4650
H114.51063.37252.20313.38711.09242.20562.45063.89372.77234.26342.67621.76522.4607
H124.51063.37253.38712.20312.20561.09243.89372.45064.26342.77232.67622.46071.7652
H133.94142.86342.16422.77691.09552.16693.05962.78942.46503.84791.76522.46073.0590
H143.94142.86342.77692.16422.16691.09552.78943.05963.84792.46502.46071.76523.0590

picture of Cyclopentanone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C3 125.887 O1 C2 C4 125.887
C2 C3 C5 104.506 C2 C3 H7 107.397
C2 C3 H9 110.564 C2 C4 C6 104.506
C2 C4 H8 107.397 C2 C4 H10 110.564
C3 C2 C4 108.225 C3 C5 C6 103.541
C3 C5 H11 113.313 C3 C5 H13 109.991
C4 C6 C5 103.541 C4 C6 H12 113.313
C4 C6 H14 109.991 C5 C3 H7 110.933
C5 C3 H9 115.855 C5 C6 H12 112.831
C5 C6 H14 109.551 C6 C4 H8 110.933
C6 C4 H10 115.855 C6 C5 H11 112.831
C6 C5 H13 109.551 H7 C3 H9 107.314
H8 C4 H10 107.314 H11 C5 H13 107.568
H12 C6 H14 107.568
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability