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: HF/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at HF/STO-3G
 hartrees
Energy at 0K-226.928969
Energy at 298.15K-226.936021
Nuclear repulsion energy166.708218
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 HF/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' 3754 3065 0.64      
2 A' 3733 3048 0.01      
3 A' 3629 2963 0.29      
4 A' 3608 2946 0.65      
5 A' 2198 1795 48.10      
6 A' 1819 1485 0.04      
7 A' 1781 1454 0.10      
8 A' 1558 1272 2.14      
9 A' 1443 1178 0.07      
10 A' 1288 1051 0.72      
11 A' 1165 951 0.17      
12 A' 1021 834 0.09      
13 A' 873 713 2.34      
14 A' 790 645 0.53      
15 A' 465 380 0.84      
16 A' 99 81 1.87      
17 A" 3733 3048 0.00      
18 A" 3607 2945 1.36      
19 A" 1778 1452 2.72      
20 A" 1575 1286 8.16      
21 A" 1492 1218 1.30      
22 A" 1455 1188 0.00      
23 A" 1298 1060 54.67      
24 A" 1179 963 0.00      
25 A" 1162 949 0.38      
26 A" 846 691 0.00      
27 A" 525 428 13.07      

Unscaled Zero Point Vibrational Energy (zpe) 23936.4 cm-1
Scaled (by 0.8165) Zero Point Vibrational Energy (zpe) 19544.1 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 HF/STO-3G
ABC
0.36043 0.15794 0.11703

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 1.895 0.000
C2 0.000 0.686 0.000
C3 -0.000 -0.390 1.113
C4 -0.000 -0.390 -1.113
C5 -0.000 -1.476 0.000
H6 -0.884 -2.108 0.000
H7 0.884 -2.108 0.000
H8 0.885 -0.380 1.746
H9 0.885 -0.380 -1.746
H10 -0.885 -0.380 1.746
H11 -0.885 -0.380 -1.746

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
O11.20902.54242.54243.37184.10004.09973.00143.00143.00143.0014
C21.20901.54881.54882.16272.93102.93072.22892.22892.22892.2289
C32.54241.54882.22691.55552.22982.22971.08772.99321.08772.9929
C42.54241.54882.22691.55552.22982.22972.99321.08772.99291.0877
C53.37182.16271.55551.55551.08621.08622.24352.24352.24332.2433
H64.10002.93102.22982.22981.08621.76713.02693.02692.45642.4564
H74.09972.93072.22972.22971.08621.76712.45642.45643.02683.0268
H83.00142.22891.08772.99322.24353.02692.45643.49181.77013.9145
H93.00142.22892.99321.08772.24353.02692.45643.49183.91451.7701
H103.00142.22891.08772.99292.24332.45643.02681.77013.91453.4911
H113.00142.22892.99291.08772.24332.45643.02683.91451.77013.4911

picture of Cyclobutanone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C3 134.035 O1 C2 C4 134.035
C2 C3 C5 88.325 C2 C3 H8 114.295
C2 C3 H10 114.289 C2 C4 C5 88.325
C2 C4 H9 114.295 C2 C4 H11 114.289
C3 C2 C4 91.930 C3 C5 C4 91.421
C3 C5 H6 113.967 C3 C5 H7 113.960
C4 C5 H6 113.967 C4 C5 H7 113.960
C5 C3 H8 115.007 C5 C3 H10 114.995
C5 C4 H9 115.007 C5 C4 H11 114.995
H6 C5 H7 108.866 H8 C3 H10 108.908
H9 C4 H11 108.908
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.223      
2 C 0.211      
3 C -0.136      
4 C -0.136      
5 C -0.106      
6 H 0.060      
7 H 0.060      
8 H 0.068      
9 H 0.068      
10 H 0.068      
11 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 -1.896 0.000 1.896
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.789 -0.000 0.000
y -0.000 -33.063 0.000
z 0.000 0.000 -27.648
Traceless
 xyz
x 3.567 -0.000 0.000
y -0.000 -5.845 0.000
z 0.000 0.000 2.278
Polar
3z2-r24.556
x2-y26.274
xy-0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.558 0.000 0.000
y 0.000 3.924 0.000
z 0.000 0.000 3.179


<r2> (average value of r2) Å2
<r2> 105.917
(<r2>)1/2 10.292