return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: MP2=FULL/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=FULL/3-21G
 hartrees
Energy at 0K-267.907620
Energy at 298.15K-267.916395
HF Energy-267.322096
Nuclear repulsion energy228.620874
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/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 3161 3.53      
2 A' 3250 3104 3.47      
3 A' 3204 3059 4.73      
4 A' 3191 3047 9.78      
5 A' 3084 2944 2.06      
6 A' 1664 1589 17.91      
7 A' 1563 1492 7.64      
8 A' 1547 1477 12.33      
9 A' 1462 1396 21.88      
10 A' 1419 1354 70.13      
11 A' 1219 1164 102.36      
12 A' 1198 1144 5.97      
13 A' 1145 1093 8.95      
14 A' 1126 1076 7.16      
15 A' 995 950 46.97      
16 A' 885 845 18.47      
17 A' 843 805 3.12      
18 A' 762 727 0.42      
19 A' 588 562 6.27      
20 A' 384 367 4.73      
21 A' 254 242 4.49      
22 A" 3294 3146 0.42      
23 A" 3201 3056 7.51      
24 A" 3151 3009 6.93      
25 A" 1580 1509 11.12      
26 A" 1536 1467 5.40      
27 A" 1261 1204 0.00      
28 A" 1187 1133 3.92      
29 A" 1175 1122 2.88      
30 A" 1115 1065 4.67      
31 A" 933 891 1.69      
32 A" 813 777 4.51      
33 A" 643 614 0.74      
34 A" 271 259 0.08      
35 A" 157 150 0.19      
36 A" 66 63 1.91      

Unscaled Zero Point Vibrational Energy (zpe) 26738.6 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 25530.0 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 MP2=FULL/3-21G
ABC
0.23302 0.08764 0.07622

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -1.341 -0.847 0.000
C2 -0.087 -0.795 0.000
C3 0.789 -2.046 0.000
C4 0.632 0.515 0.000
C5 -0.087 1.651 0.757
C6 -0.087 1.651 -0.757
H7 0.147 -2.929 0.000
H8 1.432 -2.053 -0.888
H9 1.432 -2.053 0.888
H10 1.714 0.491 0.000
H11 -1.008 1.357 1.245
H12 0.527 2.376 1.276
H13 -1.008 1.357 -1.245
H14 0.527 2.376 -1.276

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
O11.25532.44462.39722.89562.89562.55903.15193.15193.33492.55293.93762.55293.9376
C21.25531.52721.49422.56012.56012.14692.16312.16312.21272.65133.47252.65133.4725
C32.44461.52722.56603.87363.87361.09231.09631.09632.70034.04464.60934.04464.6093
C42.39721.49422.56601.54221.54223.47832.83292.83291.08232.22442.25842.22442.2584
C52.89562.56013.87361.54221.51424.64774.32794.00522.27121.08351.08272.22382.2444
C62.89562.56013.87361.54221.51424.64774.00524.32792.27122.22382.24441.08351.0827
H72.55902.14691.09233.47834.64774.64771.79141.79143.76234.61005.46934.61005.4693
H83.15192.16311.09632.83294.32794.00521.79141.77602.70954.70455.01144.20834.5366
H93.15192.16311.09632.83294.00524.32791.79141.77602.70954.20834.53664.70455.0114
H103.33492.21272.70031.08232.27122.27123.76232.70952.70953.11572.56623.11572.5662
H112.55292.65134.04462.22441.08352.22384.61004.70454.20833.11571.84332.49073.1233
H123.93763.47254.60932.25841.08272.24445.46935.01144.53662.56621.84333.12332.5525
H132.55292.65134.04462.22442.22381.08354.61004.20834.70453.11572.49073.12331.8433
H143.93763.47254.60932.25842.24441.08275.46934.53665.01142.56623.12332.55251.8433

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 122.636 O1 C2 C4 121.109
C2 C3 H7 108.948 C2 C3 H8 109.986
C2 C3 H9 109.986 C2 C4 C5 114.938
C2 C4 C6 114.938 C2 C4 H10 117.471
C3 C2 C4 116.255 C4 C5 C6 60.597
C4 C5 H11 114.681 C4 C5 H12 117.651
C4 C6 C5 60.597 C4 C6 H13 114.681
C4 C6 H14 117.651 C5 C4 C6 58.805
C5 C4 H10 118.810 C5 C6 H13 116.782
C5 C6 H14 118.652 C6 C4 H10 118.810
C6 C5 H11 116.782 C6 C5 H12 118.652
H7 C3 H8 109.865 H7 C3 H9 109.865
H8 C3 H9 108.183 H11 C5 H12 116.623
H13 C6 H14 116.623
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability