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All results from a given calculation for C5H8O (Methyl cyclopropyl ketone)

using model chemistry: MP2/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/3-21G*
 hartrees
Energy at 0K-267.897383
Energy at 298.15K-267.906139
HF Energy-267.322032
Nuclear repulsion energy228.572592
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 MP2/3-21G*
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' 3310 3148 3.59      
2 A' 3250 3091 3.51      
3 A' 3204 3048 4.76      
4 A' 3190 3035 9.86      
5 A' 3083 2933 2.08      
6 A' 1664 1583 17.89      
7 A' 1563 1487 7.67      
8 A' 1547 1471 12.30      
9 A' 1461 1390 21.78      
10 A' 1418 1349 69.81      
11 A' 1218 1159 102.31      
12 A' 1198 1139 6.14      
13 A' 1145 1089 8.91      
14 A' 1126 1071 7.18      
15 A' 994 946 47.21      
16 A' 885 842 18.47      
17 A' 843 802 3.13      
18 A' 762 724 0.42      
19 A' 588 559 6.27      
20 A' 384 365 4.73      
21 A' 254 241 4.50      
22 A" 3294 3133 0.42      
23 A" 3200 3044 7.59      
24 A" 3150 2997 6.99      
25 A" 1580 1503 11.09      
26 A" 1536 1461 5.35      
27 A" 1261 1200 0.01      
28 A" 1187 1129 3.94      
29 A" 1174 1117 2.81      
30 A" 1115 1061 4.67      
31 A" 933 887 1.71      
32 A" 813 773 4.49      
33 A" 642 611 0.74      
34 A" 271 257 0.08      
35 A" 157 150 0.19      
36 A" 66 63 1.91      

Unscaled Zero Point Vibrational Energy (zpe) 26732.1 cm-1
Scaled (by 0.9513) Zero Point Vibrational Energy (zpe) 25430.3 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 MP2/3-21G*
ABC
0.23292 0.08760 0.07618

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -1.341 -0.848 0.000
C2 -0.087 -0.795 0.000
C3 0.790 -2.046 0.000
C4 0.631 0.515 0.000
C5 -0.087 1.651 0.757
C6 -0.087 1.651 -0.757
H7 0.148 -2.930 0.000
H8 1.433 -2.053 -0.888
H9 1.433 -2.053 0.888
H10 1.714 0.492 0.000
H11 -1.009 1.357 1.246
H12 0.528 2.376 1.276
H13 -1.009 1.357 -1.246
H14 0.528 2.376 -1.276

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
O11.25542.44512.39772.89662.89662.55963.15243.15243.33552.55403.93862.55403.9386
C21.25541.52761.49462.56092.56092.14732.16342.16342.21322.65223.47332.65223.4733
C32.44511.52762.56643.87453.87451.09251.09651.09652.70074.04584.61014.04584.6101
C42.39771.49462.56641.54251.54253.47892.83322.83321.08242.22482.25872.22482.2587
C52.89662.56093.87451.54251.51454.64894.32864.00582.27141.08371.08282.22422.2448
C62.89662.56093.87451.54251.51454.64894.00584.32862.27142.22422.24481.08371.0828
H72.55962.14731.09253.47894.64894.64891.79161.79163.76284.61145.47034.61145.4703
H83.15242.16341.09652.83324.32864.00581.79161.77622.70974.70555.01194.20924.5370
H93.15242.16341.09652.83324.00584.32861.79161.77622.70974.20924.53704.70555.0119
H103.33552.21322.70071.08242.27142.27143.76282.70972.70973.11622.56643.11622.5664
H112.55402.65224.04582.22481.08372.22424.61144.70554.20923.11621.84362.49113.1238
H123.93863.47334.61012.25871.08282.24485.47035.01194.53702.56641.84363.12382.5530
H132.55402.65224.04582.22482.22421.08374.61144.20924.70553.11622.49113.12381.8436
H143.93863.47334.61012.25872.24481.08285.47034.53705.01192.56643.12382.55301.8436

picture of Methyl cyclopropyl ketone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C3 122.646 O1 C2 C4 121.113
C2 C3 H7 108.946 C2 C3 H8 109.979
C2 C3 H9 109.979 C2 C4 C5 114.952
C2 C4 C6 114.952 C2 C4 H10 117.475
C3 C2 C4 116.241 C4 C5 C6 60.599
C4 C5 H11 114.680 C4 C5 H12 117.643
C4 C6 C5 60.599 C4 C6 H13 114.680
C4 C6 H14 117.643 C5 C4 C6 58.802
C5 C4 H10 118.793 C5 C6 H13 116.782
C5 C6 H14 118.653 C6 C4 H10 118.793
C6 C5 H11 116.782 C6 C5 H12 118.653
H7 C3 H8 109.870 H7 C3 H9 109.870
H8 C3 H9 108.189 H11 C5 H12 116.627
H13 C6 H14 116.627
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability