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: PBEPBE/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 PBEPBE/3-21G
 hartrees
Energy at 0K-268.710661
Energy at 298.15K-268.719251
HF Energy-268.710661
Nuclear repulsion energy228.712647
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 PBEPBE/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' 3207 3178 2.47      
2 A' 3156 3127 4.43      
3 A' 3103 3075 9.80      
4 A' 3098 3069 7.50      
5 A' 2980 2953 1.38      
6 A' 1670 1655 51.89      
7 A' 1473 1459 11.45      
8 A' 1451 1437 12.37      
9 A' 1374 1362 35.15      
10 A' 1353 1341 98.67      
11 A' 1176 1166 45.58      
12 A' 1161 1151 53.63      
13 A' 1094 1084 17.28      
14 A' 1044 1034 17.18      
15 A' 949 940 45.20      
16 A' 876 868 21.42      
17 A' 798 790 4.98      
18 A' 750 743 0.19      
19 A' 572 567 3.69      
20 A' 376 373 5.83      
21 A' 253 250 4.70      
22 A" 3190 3161 0.41      
23 A" 3097 3069 9.37      
24 A" 3041 3013 5.28      
25 A" 1495 1481 13.88      
26 A" 1435 1422 10.51      
27 A" 1194 1183 0.00      
28 A" 1105 1095 4.58      
29 A" 1089 1079 1.05      
30 A" 1050 1041 10.91      
31 A" 864 856 3.94      
32 A" 789 782 2.53      
33 A" 623 617 0.11      
34 A" 261 258 0.03      
35 A" 142 140 0.54      
36 A" 77 76 2.50      

Unscaled Zero Point Vibrational Energy (zpe) 25681.3 cm-1
Scaled (by 0.9909) Zero Point Vibrational Energy (zpe) 25447.6 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 PBEPBE/3-21G
ABC
0.23247 0.08825 0.07658

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -1.340 -0.838 0.000
C2 -0.091 -0.792 0.000
C3 0.788 -2.039 0.000
C4 0.639 0.510 0.000
C5 -0.091 1.646 0.755
C6 -0.091 1.646 -0.755
H7 0.155 -2.939 0.000
H8 1.442 -2.038 -0.892
H9 1.442 -2.038 0.892
H10 1.729 0.488 0.000
H11 -1.017 1.329 1.241
H12 0.529 2.374 1.281
H13 -1.017 1.329 -1.241
H14 0.529 2.374 -1.281

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
O11.25062.44382.39482.88162.88162.57853.15893.15893.34342.51863.93172.51863.9317
C21.25061.52511.49302.55262.55262.16022.16722.16722.22482.62693.47192.62693.4719
C32.44381.52512.55363.86273.86271.09991.10621.10622.69644.01804.60274.01804.6027
C42.39481.49302.55361.54651.54653.48262.81692.81691.09022.22532.26442.22532.2644
C52.88162.55263.86271.54651.51094.65274.31663.99222.28481.09281.09152.22362.2501
C62.88162.55263.86271.54651.51094.65273.99224.31662.28482.22362.25011.09281.0915
H72.57852.16021.09993.48264.65274.65271.80651.80653.77064.59675.47794.59675.4779
H83.15892.16721.10622.81694.31663.99221.80651.78402.69414.68365.00234.18434.5223
H93.15892.16721.10622.81693.99224.31661.80651.78402.69414.18434.52234.68365.0023
H103.34342.22482.69641.09022.28482.28483.77062.69412.69413.12832.57623.12832.5762
H112.51862.62694.01802.22531.09282.22364.59674.68364.18433.12831.86682.48223.1377
H123.93173.47194.60272.26441.09152.25015.47795.00234.52232.57621.86683.13772.5624
H132.51862.62694.01802.22532.22361.09284.59674.18434.68363.12832.48223.13771.8668
H143.93173.47194.60272.26442.25011.09155.47794.52235.00232.57623.13772.56241.8668

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 123.086 O1 C2 C4 121.335
C2 C3 H7 109.697 C2 C3 H8 109.875
C2 C3 H9 109.875 C2 C4 C5 114.229
C2 C4 C6 114.229 C2 C4 H10 118.072
C3 C2 C4 115.579 C4 C5 C6 60.759
C4 C5 H11 113.839 C4 C5 H12 117.221
C4 C6 C5 60.759 C4 C6 H13 113.839
C4 C6 H14 117.221 C5 C4 C6 58.483
C5 C4 H10 119.100 C5 C6 H13 116.386
C5 C6 H14 118.792 C6 C4 H10 119.100
C6 C5 H11 116.386 C6 C5 H12 118.792
H7 C3 H8 109.941 H7 C3 H9 109.941
H8 C3 H9 107.482 H11 C5 H12 117.436
H13 C6 H14 117.436
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.433      
2 C 0.446      
3 C -0.671      
4 C -0.411      
5 C -0.374      
6 C -0.374      
7 H 0.234      
8 H 0.229      
9 H 0.229      
10 H 0.204      
11 H 0.240      
12 H 0.220      
13 H 0.240      
14 H 0.220      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.498 0.521 0.000 2.552
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -38.320 -1.620 0.000
y -1.620 -34.625 0.000
z 0.000 0.000 -36.031
Traceless
 xyz
x -2.992 -1.620 0.000
y -1.620 2.550 0.000
z 0.000 0.000 0.442
Polar
3z2-r20.884
x2-y2-3.695
xy-1.620
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.298 -0.205 0.000
y -0.205 8.979 0.000
z 0.000 0.000 6.084


<r2> (average value of r2) Å2
<r2> 168.376
(<r2>)1/2 12.976