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/STO-3G

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/STO-3G
 hartrees
Energy at 0K-267.179473
Energy at 298.15K-267.188860
HF Energy-267.179473
Nuclear repulsion energy232.048120
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/STO-3G
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 3536 3536 0.05      
2 A 3523 3523 0.05      
3 A 3426 3426 0.54      
4 A 3410 3410 1.40      
5 A 1971 1971 42.93      
6 A 1696 1696 0.10      
7 A 1653 1653 0.01      
8 A 1505 1505 1.25      
9 A 1451 1451 0.08      
10 A 1345 1345 0.35      
11 A 1303 1303 0.09      
12 A 1160 1160 0.52      
13 A 1078 1078 0.12      
14 A 1000 1000 0.11      
15 A 877 877 0.04      
16 A 792 792 0.93      
17 A 598 598 0.81      
18 A 220 220 0.00      
19 B 3542 3542 0.77      
20 B 3523 3523 0.23      
21 B 3425 3425 1.19      
22 B 3408 3408 2.90      
23 B 1683 1683 0.99      
24 B 1653 1653 6.30      
25 B 1493 1493 2.44      
26 B 1429 1429 2.10      
27 B 1373 1373 0.41      
28 B 1253 1253 2.67      
29 B 1239 1239 58.75      
30 B 1079 1079 7.58      
31 B 1017 1017 0.99      
32 B 913 913 6.30      
33 B 613 613 2.77      
34 B 473 473 6.07      
35 B 461 461 1.07      
36 B 88 88 1.86      

Unscaled Zero Point Vibrational Energy (zpe) 29603.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 29603.2 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/STO-3G
ABC
0.21461 0.10822 0.07757

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/STO-3G

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 2.177
C2 0.000 0.000 0.943
C3 0.000 1.265 0.022
C4 0.000 -1.265 0.022
C5 0.299 0.717 -1.393
C6 -0.299 -0.717 -1.393
H7 -0.997 1.727 0.058
H8 0.997 -1.727 0.058
H9 0.731 2.008 0.365
H10 -0.731 -2.008 0.365
H11 -0.133 1.342 -2.183
H12 0.133 -1.342 -2.183
H13 1.384 0.664 -1.550
H14 -1.384 -0.664 -1.550

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
O11.23422.49972.49973.65353.65352.90992.90992.80202.80204.56454.56454.03074.0307
C21.23421.56551.56552.46162.46162.18182.18182.21382.21383.40513.40512.92752.9275
C32.49971.56552.53101.54612.45351.09943.15451.09723.37162.21033.41762.17872.8471
C42.49971.56552.53102.45351.54613.15451.09943.37161.09723.41762.21032.84712.1787
C53.65352.46161.54612.45351.55352.19202.92682.22313.40221.09672.21211.09772.1822
C63.65352.46162.45351.54611.55352.92682.19203.40222.22312.21211.09672.18221.0977
H72.90992.18181.09943.15452.19202.92683.98851.77773.75692.43293.96523.06362.9070
H82.90992.18183.15451.09942.92682.19203.98853.75691.77773.96522.43292.90703.0636
H92.80202.21381.09723.37162.22313.40221.77773.75694.27382.77194.25142.42873.9086
H102.80202.21383.37161.09723.40222.22313.75691.77774.27384.25142.77193.90862.4287
H114.56453.40512.21033.41761.09672.21212.43293.96522.77194.25142.69771.77852.4474
H124.56453.40513.41762.21032.21211.09673.96522.43294.25142.77192.69772.44741.7785
H134.03072.92752.17872.84711.09772.18223.06362.90702.42873.90861.77852.44743.0696
H144.03072.92752.84712.17872.18221.09772.90703.06363.90862.42872.44741.77853.0696

picture of Cyclopentanone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C3 126.062 O1 C2 C4 126.062
C2 C3 C5 104.576 C2 C3 H7 108.650
C2 C3 H9 111.274 C2 C4 C6 104.576
C2 C4 H8 108.650 C2 C4 H10 111.274
C3 C2 C4 107.876 C3 C5 C6 104.664
C3 C5 H11 112.402 C3 C5 H13 109.827
C4 C6 C5 104.664 C4 C6 H12 112.402
C4 C6 H14 109.827 C5 C3 H7 110.775
C5 C3 H9 113.416 C5 C6 H12 112.013
C5 C6 H14 109.599 C6 C4 H8 110.775
C6 C4 H10 113.416 C6 C5 H11 112.013
C6 C5 H13 109.599 H7 C3 H9 108.063
H8 C4 H10 108.063 H11 C5 H13 108.288
H12 C6 H14 108.288
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at M06-2X/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.190      
2 C 0.167      
3 C -0.156      
4 C -0.156      
5 C -0.129      
6 C -0.129      
7 H 0.078      
8 H 0.078      
9 H 0.079      
10 H 0.079      
11 H 0.071      
12 H 0.071      
13 H 0.068      
14 H 0.068      


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 -1.769 1.769
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.803 -0.149 0.000
y -0.149 -33.310 0.000
z 0.000 0.000 -39.159
Traceless
 xyz
x 3.432 -0.149 0.000
y -0.149 2.670 0.000
z 0.000 0.000 -6.102
Polar
3z2-r2-12.205
x2-y20.508
xy-0.149
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.313 0.011 0.000
y 0.011 4.132 0.000
z 0.000 0.000 4.859


<r2> (average value of r2) Å2
<r2> 154.964
(<r2>)1/2 12.448