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: QCISD/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 QCISD/6-31G**
 hartrees
Energy at 0K-269.768681
Energy at 298.15K-269.777420
HF Energy-268.846356
Nuclear repulsion energy230.320288
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 QCISD/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' 3321 3127 8.35      
2 A' 3243 3053 10.19      
3 A' 3233 3043 9.78      
4 A' 3221 3032 10.01      
5 A' 3106 2924 4.36      
6 A' 1808 1702 97.17      
7 A' 1560 1468 10.96      
8 A' 1527 1438 9.69      
9 A' 1472 1385 87.32      
10 A' 1435 1351 4.69      
11 A' 1261 1187 10.66      
12 A' 1234 1162 77.14      
13 A' 1143 1076 8.00      
14 A' 1118 1053 10.11      
15 A' 1009 950 38.77      
16 A' 952 896 11.60      
17 A' 829 781 1.20      
18 A' 772 727 0.18      
19 A' 599 564 13.53      
20 A' 377 355 3.86      
21 A' 246 232 4.33      
22 A" 3310 3116 0.40      
23 A" 3217 3028 14.17      
24 A" 3181 2995 11.33      
25 A" 1535 1445 7.56      
26 A" 1512 1423 1.40      
27 A" 1251 1178 0.13      
28 A" 1171 1102 1.75      
29 A" 1140 1073 1.61      
30 A" 1083 1020 2.16      
31 A" 926 872 0.30      
32 A" 864 814 4.78      
33 A" 611 575 2.55      
34 A" 267 251 0.60      
35 A" 143 134 0.01      
36 A" 72 68 1.69      

Unscaled Zero Point Vibrational Energy (zpe) 26873.4 cm-1
Scaled (by 0.9414) Zero Point Vibrational Energy (zpe) 25298.7 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 QCISD/6-31G**
ABC
0.23979 0.08771 0.07662

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -1.484 -0.549 0.000
C2 -0.276 -0.758 0.000
C3 0.298 -2.159 0.000
C4 0.703 0.372 0.000
C5 0.298 1.628 0.745
C6 0.298 1.628 -0.745
H7 -0.508 -2.887 0.000
H8 0.929 -2.302 -0.880
H9 0.929 -2.302 0.880
H10 1.753 0.106 0.000
H11 -0.661 1.589 1.242
H12 1.076 2.169 1.267
H13 -0.661 1.589 -1.242
H14 1.076 2.169 -1.267

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
O11.22572.40152.37312.91112.91112.53323.10893.10893.30212.60643.94282.60643.9428
C21.22571.51381.49532.56562.56562.14152.14662.14662.20512.68363.46412.68363.4641
C32.40151.51382.56273.86013.86011.08701.09201.09202.69144.06354.57574.06354.5757
C42.37311.49532.56271.51631.51633.47682.82352.82351.08262.21042.22992.21042.2299
C52.91112.56563.86011.51631.49044.64744.29953.98272.23361.08101.08112.20682.2235
C62.91112.56563.86011.51631.49044.64743.98274.29952.23362.20682.22351.08101.0811
H72.53322.14151.08703.47684.64744.64741.78401.78403.75114.64815.44774.64815.4477
H83.10892.14661.09202.82354.29953.98271.78401.76062.69264.70854.96134.21864.4894
H93.10892.14661.09202.82353.98274.29951.78401.76062.69264.21864.48944.70854.9613
H103.30212.20512.69141.08262.23362.23363.75112.69262.69263.09332.51343.09332.5134
H112.60642.68364.06352.21041.08102.20684.64814.70854.21863.09331.83152.48373.1058
H123.94283.46414.57572.22991.08112.22355.44774.96134.48942.51341.83153.10582.5331
H132.60642.68364.06352.21042.20681.08104.64814.21864.70853.09332.48373.10581.8315
H143.94283.46414.57572.22992.22351.08115.44774.48944.96132.51343.10582.53311.8315

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 122.119 O1 C2 C4 121.100
C2 C3 H7 109.767 C2 C3 H8 109.874
C2 C3 H9 109.874 C2 C4 C5 116.842
C2 C4 C6 116.842 C2 C4 H10 116.700
C3 C2 C4 116.782 C4 C5 C6 60.564
C4 C5 H11 115.638 C4 C5 H12 117.321
C4 C6 C5 60.564 C4 C6 H13 115.638
C4 C6 H14 117.321 C5 C4 C6 58.873
C5 C4 H10 117.543 C5 C6 H13 117.351
C5 C6 H14 118.833 C6 C4 H10 117.543
C6 C5 H11 117.351 C6 C5 H12 118.833
H7 C3 H8 109.923 H7 C3 H9 109.923
H8 C3 H9 107.448 H11 C5 H12 115.798
H13 C6 H14 115.798
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability