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 (Cyclopentanone)

using model chemistry: M06-2X/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at M06-2X/6-311G**
 hartrees
Energy at 0K-270.520008
Energy at 298.15K-270.529680
HF Energy-270.520008
Nuclear repulsion energy236.039760
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 M06-2X/6-311G**
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 3145 3145 3.11      
2 A 3120 3120 14.72      
3 A 3061 3061 20.90      
4 A 3054 3054 1.59      
5 A 1895 1895 261.11      
6 A 1513 1513 2.35      
7 A 1457 1457 0.19      
8 A 1346 1346 0.01      
9 A 1313 1313 3.16      
10 A 1222 1222 0.11      
11 A 1186 1186 0.22      
12 A 1050 1050 0.70      
13 A 962 962 0.32      
14 A 918 918 0.64      
15 A 823 823 0.81      
16 A 719 719 0.77      
17 A 564 564 5.72      
18 A 243 243 0.09      
19 B 3145 3145 11.17      
20 B 3127 3127 23.58      
21 B 3066 3066 30.47      
22 B 3054 3054 3.57      
23 B 1498 1498 6.89      
24 B 1458 1458 23.21      
25 B 1345 1345 1.82      
26 B 1305 1305 12.20      
27 B 1264 1264 4.11      
28 B 1176 1176 35.69      
29 B 1167 1167 36.52      
30 B 984 984 13.18      
31 B 928 928 0.99      
32 B 851 851 10.53      
33 B 584 584 2.88      
34 B 479 479 6.28      
35 B 457 457 3.44      
36 B 105 105 4.87      

Unscaled Zero Point Vibrational Energy (zpe) 26791.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 26791.9 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 M06-2X/6-311G**
ABC
0.22184 0.11248 0.08082

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/6-311G**

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 2.121
C2 0.000 0.000 0.922
C3 0.000 1.239 0.028
C4 0.000 -1.239 0.028
C5 0.314 0.703 -1.371
C6 -0.314 -0.703 -1.371
H7 -1.010 1.663 0.069
H8 1.010 -1.663 0.069
H9 0.688 1.991 0.414
H10 -0.688 -1.991 0.414
H11 -0.069 1.337 -2.171
H12 0.069 -1.337 -2.171
H13 1.397 0.619 -1.502
H14 -1.397 -0.619 -1.502

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
O11.19892.43222.43223.57613.57612.82762.82762.71112.71114.49614.49613.93233.9323
C21.19891.52801.52802.41922.41922.12422.12422.16682.16683.37053.37052.86582.8658
C32.43221.52802.47871.53102.41481.09583.07291.08983.32512.20283.38792.16292.7837
C42.43221.52802.47872.41481.53103.07291.09583.32511.08983.38792.20282.78372.1629
C53.57612.41921.53102.41481.54052.17862.85602.23283.38391.08982.20491.09412.1664
C63.57612.41922.41481.53101.54052.85602.17863.38392.23282.20491.08982.16641.0941
H72.82762.12421.09583.07292.17862.85603.89061.76403.68372.45153.89583.05772.7975
H82.82762.12423.07291.09582.85602.17863.89063.68371.76403.89582.45152.79753.0577
H92.71112.16681.08983.32512.23283.38391.76403.68374.21292.77254.25902.46083.8516
H102.71112.16683.32511.08983.38392.23283.68371.76404.21294.25902.77253.85162.4608
H114.49613.37052.20283.38791.08982.20492.45153.89582.77254.25902.67671.76372.4568
H124.49613.37053.38792.20282.20491.08983.89582.45154.25902.77252.67672.45681.7637
H133.93232.86582.16292.78371.09412.16643.05772.79752.46083.85161.76372.45683.0560
H143.93232.86582.78372.16292.16641.09412.79753.05773.85162.46082.45681.76373.0560

picture of Cyclopentanone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C3 125.801 O1 C2 C4 125.801
C2 C3 C5 104.525 C2 C3 H7 106.951
C2 C3 H9 110.615 C2 C4 C6 104.525
C2 C4 H8 106.951 C2 C4 H10 110.615
C3 C2 C4 108.398 C3 C5 C6 103.659
C3 C5 H11 113.311 C3 C5 H13 109.837
C4 C6 C5 103.659 C4 C6 H12 113.311
C4 C6 H14 109.837 C5 C3 H7 110.979
C5 C3 H9 115.822 C5 C6 H12 112.793
C5 C6 H14 109.459 C6 C4 H8 110.979
C6 C4 H10 115.822 C6 C5 H11 112.793
C6 C5 H13 109.459 H7 C3 H9 107.624
H8 C4 H10 107.624 H11 C5 H13 107.721
H12 C6 H14 107.721
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at M06-2X/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.317      
2 C 0.255      
3 C -0.329      
4 C -0.329      
5 C -0.313      
6 C -0.313      
7 H 0.179      
8 H 0.179      
9 H 0.177      
10 H 0.177      
11 H 0.159      
12 H 0.159      
13 H 0.158      
14 H 0.158      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -2.988 2.988
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -35.346 -0.210 0.000
y -0.210 -35.268 0.000
z 0.000 0.000 -44.525
Traceless
 xyz
x 4.551 -0.210 0.000
y -0.210 4.667 0.000
z 0.000 0.000 -9.218
Polar
3z2-r2-18.437
x2-y2-0.077
xy-0.210
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.668 0.076 0.000
y 0.076 8.262 0.000
z 0.000 0.000 8.861


<r2> (average value of r2) Å2
<r2> 152.174
(<r2>)1/2 12.336