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: B2PLYP=FULL/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B2PLYP=FULL/6-31G*
 hartrees
Energy at 0K-270.243050
Energy at 298.15K-270.251722
HF Energy-269.962690
Nuclear repulsion energy230.250146
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 B2PLYP=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' 3288 3118 6.37      
2 A' 3212 3046 10.38      
3 A' 3202 3037 9.02      
4 A' 3190 3025 9.48      
5 A' 3080 2921 3.10      
6 A' 1783 1691 99.73      
7 A' 1537 1458 8.99      
8 A' 1515 1437 12.63      
9 A' 1450 1375 101.95      
10 A' 1422 1349 7.64      
11 A' 1249 1185 12.77      
12 A' 1221 1158 80.98      
13 A' 1133 1074 13.49      
14 A' 1091 1035 10.85      
15 A' 994 943 46.68      
16 A' 938 890 16.70      
17 A' 826 783 2.08      
18 A' 766 726 0.15      
19 A' 596 565 10.68      
20 A' 377 357 4.18      
21 A' 245 232 4.36      
22 A" 3275 3106 0.48      
23 A" 3188 3023 13.16      
24 A" 3145 2982 9.12      
25 A" 1525 1446 9.36      
26 A" 1498 1421 2.66      
27 A" 1240 1176 0.12      
28 A" 1153 1094 1.87      
29 A" 1117 1060 1.81      
30 A" 1075 1020 4.80      
31 A" 900 854 0.03      
32 A" 850 806 4.40      
33 A" 610 578 1.84      
34 A" 262 248 0.40      
35 A" 143 135 0.07      
36 A" 73 69 1.93      

Unscaled Zero Point Vibrational Energy (zpe) 26583.3 cm-1
Scaled (by 0.9484) Zero Point Vibrational Energy (zpe) 25211.6 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 B2PLYP=FULL/6-31G*
ABC
0.24001 0.08765 0.07657

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -1.483 -0.551 0.000
C2 -0.276 -0.757 0.000
C3 0.298 -2.158 0.000
C4 0.702 0.369 0.000
C5 0.298 1.631 0.744
C6 0.298 1.631 -0.744
H7 -0.510 -2.889 0.000
H8 0.932 -2.307 -0.881
H9 0.932 -2.307 0.881
H10 1.754 0.102 0.000
H11 -0.663 1.590 1.243
H12 1.080 2.168 1.269
H13 -0.663 1.590 -1.243
H14 1.080 2.168 -1.269

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
O11.22452.39842.37072.91332.91332.53183.11213.11213.30202.60863.94592.60863.9459
C21.22451.51351.49122.56642.56642.14442.15252.15252.20412.68463.46462.68463.4646
C32.39841.51352.55863.86113.86111.08971.09511.09512.68844.06424.57524.06424.5752
C42.37071.49122.55861.51981.51983.47582.82582.82581.08512.21392.23392.21392.2339
C52.91332.56643.86111.51981.48734.65144.30633.99052.23821.08391.08402.20762.2250
C62.91332.56643.86111.51981.48734.65143.99054.30632.23822.20762.22501.08391.0840
H72.53182.14441.08973.47584.65144.65141.78691.78693.75134.65105.45044.65105.4504
H83.11212.15251.09512.82584.30633.99051.78691.76162.69344.71594.96624.22594.4935
H93.11212.15251.09512.82583.99054.30631.78691.76162.69344.22594.49354.71594.9662
H103.30202.20412.68841.08512.23822.23823.75132.69342.69343.09862.51633.09862.5163
H112.60862.68464.06422.21391.08392.20764.65104.71594.22593.09861.83592.48693.1118
H123.94593.46464.57522.23391.08402.22505.45044.96624.49352.51631.83593.11182.5386
H132.60862.68464.06422.21392.20761.08394.65104.22594.71593.09862.48693.11181.8359
H143.94593.46464.57522.23392.22501.08405.45044.49354.96622.51633.11182.53861.8359

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 121.958 O1 C2 C4 121.290
C2 C3 H7 109.857 C2 C3 H8 110.178
C2 C3 H9 110.178 C2 C4 C5 116.927
C2 C4 C6 116.927 C2 C4 H10 116.758
C3 C2 C4 116.753 C4 C5 C6 60.704
C4 C5 H11 115.471 C4 C5 H12 117.181
C4 C6 C5 60.704 C4 C6 H13 115.471
C4 C6 H14 117.181 C5 C4 C6 58.591
C5 C4 H10 117.492 C5 C6 H13 117.459
C5 C6 H14 119.004 C6 C4 H10 117.492
C6 C5 H11 117.459 C6 C5 H12 119.004
H7 C3 H8 109.749 H7 C3 H9 109.749
H8 C3 H9 107.089 H11 C5 H12 115.736
H13 C6 H14 115.736
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability