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 C4H6O (Cyclobutanone)

using model chemistry: HSEh1PBE/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at HSEh1PBE/6-31+G**
 hartrees
Energy at 0K-230.988816
Energy at 298.15K 
HF Energy-230.988816
Nuclear repulsion energy169.892858
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 HSEh1PBE/6-31+G**
Rotational Constants (cm-1) from geometry optimized at HSEh1PBE/6-31+G**
ABC
0.32305 0.17636 0.13475

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -0.168 1.866 0.000
C2 -0.044 0.670 0.000
C3 0.065 -0.379 1.105
C4 0.065 -0.379 -1.105
C5 0.065 -1.471 0.000
H6 0.982 -2.065 0.000
H7 -0.789 -2.151 0.000
H8 -0.821 -0.431 1.746
H9 -0.821 -0.431 -1.746
H10 0.943 -0.247 1.746
H11 0.943 -0.247 -1.746

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
O11.20212.51222.51223.34514.09524.06452.95802.95802.95772.9577
C21.20211.52691.52692.14402.92082.91782.20552.20552.20552.2055
C32.51221.52692.20941.55392.21452.25671.09522.98581.09522.9854
C42.51221.52692.20941.55392.21452.25672.98581.09522.98541.0952
C53.34512.14401.55391.55391.09191.09202.21732.21732.30582.3058
H64.09522.92082.21452.21451.09191.77332.99472.99472.52022.5202
H74.06452.91782.25672.25671.09201.77332.45122.45123.11033.1103
H82.95802.20551.09522.98582.21732.99472.45123.49221.77403.9165
H92.95802.20552.98581.09522.21732.99472.45123.49223.91651.7740
H102.95772.20551.09522.98542.30582.52023.11031.77403.91653.4912
H112.95772.20552.98541.09522.30582.52023.11033.91651.77403.4912

picture of Cyclobutanone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C3 133.658 O1 C2 C4 133.658
C2 C3 C5 88.198 C2 C3 H8 113.497
C2 C3 H10 113.492 C2 C4 C5 88.198
C2 C4 H9 113.497 C2 C4 H11 113.492
C3 C2 C4 92.684 C3 C5 C4 90.620
C3 C5 H6 112.473 C3 C5 H7 115.961
C4 C5 H6 112.473 C4 C5 H7 115.961
C5 C3 H8 112.498 C5 C3 H10 120.016
C5 C4 H9 112.498 C5 C4 H11 120.016
H6 C5 H7 108.580 H8 C3 H10 108.173
H9 C4 H11 108.173
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.419      
2 C 0.280      
3 C -0.347      
4 C -0.347      
5 C -0.284      
6 H 0.177      
7 H 0.195      
8 H 0.189      
9 H 0.189      
10 H 0.185      
11 H 0.185      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.041 -3.404 0.000 3.404
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.897 -0.870 0.000
y -0.870 -35.950 0.000
z 0.000 0.000 -29.045
Traceless
 xyz
x 3.600 -0.870 0.000
y -0.870 -6.979 0.000
z 0.000 0.000 3.378
Polar
3z2-r26.757
x2-y27.053
xy-0.870
xz0.000
yz0.000


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


<r2> (average value of r2) Å2
<r2> 100.524
(<r2>)1/2 10.026