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/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 PBEPBE/6-31G*
 hartrees
Energy at 0K-270.197907
Energy at 298.15K-270.206364
HF Energy-270.197907
Nuclear repulsion energy228.969736
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/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' 3186 3141 5.86      
2 A' 3113 3068 12.23      
3 A' 3108 3064 8.43      
4 A' 3089 3045 10.29      
5 A' 2981 2938 2.81      
6 A' 1736 1712 104.53      
7 A' 1462 1441 9.04      
8 A' 1446 1425 13.51      
9 A' 1382 1362 109.13      
10 A' 1348 1328 11.73      
11 A' 1209 1191 3.53      
12 A' 1168 1151 91.09      
13 A' 1085 1069 17.81      
14 A' 1028 1014 11.40      
15 A' 949 935 53.75      
16 A' 916 903 5.95      
17 A' 791 780 3.79      
18 A' 739 728 0.15      
19 A' 575 567 7.51      
20 A' 364 359 4.18      
21 A' 234 231 4.30      
22 A" 3173 3127 0.51      
23 A" 3089 3045 14.58      
24 A" 3045 3001 7.44      
25 A" 1455 1434 10.09      
26 A" 1425 1404 4.01      
27 A" 1185 1168 0.10      
28 A" 1096 1080 1.87      
29 A" 1051 1036 1.25      
30 A" 1020 1005 6.95      
31 A" 853 841 0.03      
32 A" 820 808 3.88      
33 A" 586 577 0.75      
34 A" 247 243 0.20      
35 A" 140 138 0.19      
36 A" 71 70 2.08      

Unscaled Zero Point Vibrational Energy (zpe) 25579.9 cm-1
Scaled (by 0.9857) Zero Point Vibrational Energy (zpe) 25214.1 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/6-31G*
ABC
0.23711 0.08685 0.07579

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -1.492 -0.553 0.000
C2 -0.278 -0.760 0.000
C3 0.300 -2.166 0.000
C4 0.706 0.369 0.000
C5 0.300 1.640 0.746
C6 0.300 1.640 -0.746
H7 -0.511 -2.908 0.000
H8 0.943 -2.318 -0.886
H9 0.943 -2.318 0.886
H10 1.768 0.101 0.000
H11 -0.671 1.592 1.248
H12 1.089 2.177 1.281
H13 -0.671 1.592 -1.248
H14 1.089 2.177 -1.281

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
O11.23132.41072.38372.92882.92882.55073.13473.13473.32512.61473.96952.61473.9695
C21.23131.52021.49762.57892.57892.16072.16862.16862.22012.69213.48382.69213.4838
C32.41071.52022.56713.87853.87851.09941.10551.10552.70124.07784.59654.07784.5965
C42.38371.49762.56711.52911.52913.49562.83872.83871.09502.22572.24902.22572.2490
C52.92882.57893.87851.52911.49244.67974.32924.01202.25391.09431.09392.21892.2403
C62.92882.57893.87851.52911.49244.67974.01204.32922.25392.21892.24031.09431.0939
H72.55072.16071.09943.49564.67974.67971.80241.80243.77524.67335.48294.67335.4829
H83.13472.16861.10552.83874.32924.01201.80241.77292.70534.73844.99234.24574.5147
H93.13472.16861.10552.83874.01204.32921.80241.77292.70534.24574.51474.73844.9923
H103.32512.22012.70121.09502.25392.25393.77522.70532.70533.11972.53213.11972.5321
H112.61472.69214.07782.22571.09432.21894.67334.73844.24573.11971.85492.49673.1361
H123.96953.48384.59652.24901.09392.24035.48294.99234.51472.53211.85493.13612.5612
H132.61472.69214.07782.22572.21891.09434.67334.24574.73843.11972.49673.13611.8549
H143.96953.48384.59652.24902.24031.09395.48294.51474.99232.53213.13612.56121.8549

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 122.008 O1 C2 C4 121.430
C2 C3 H7 110.103 C2 C3 H8 110.365
C2 C3 H9 110.365 C2 C4 C5 116.869
C2 C4 C6 116.869 C2 C4 H10 116.961
C3 C2 C4 116.562 C4 C5 C6 60.792
C4 C5 H11 115.069 C4 C5 H12 117.079
C4 C6 C5 60.792 C4 C6 H13 115.069
C4 C6 H14 117.079 C5 C4 C6 58.416
C5 C4 H10 117.430 C5 C6 H13 117.316
C5 C6 H14 119.243 C6 C4 H10 117.430
C6 C5 H11 117.316 C6 C5 H12 119.243
H7 C3 H8 109.664 H7 C3 H9 109.664
H8 C3 H9 106.615 H11 C5 H12 115.916
H13 C6 H14 115.916
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.435      
2 C 0.444      
3 C -0.582      
4 C -0.216      
5 C -0.321      
6 C -0.321      
7 H 0.190      
8 H 0.183      
9 H 0.183      
10 H 0.151      
11 H 0.192      
12 H 0.170      
13 H 0.192      
14 H 0.170      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.670 0.050 0.000 2.671
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -38.799 -0.849 0.000
y -0.849 -33.786 0.000
z 0.000 0.000 -35.537
Traceless
 xyz
x -4.137 -0.849 0.000
y -0.849 3.382 0.000
z 0.000 0.000 0.755
Polar
3z2-r21.510
x2-y2-5.013
xy-0.849
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.875 0.257 0.000
y 0.257 9.621 0.000
z 0.000 0.000 6.586


<r2> (average value of r2) Å2
<r2> 169.401
(<r2>)1/2 13.015