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: wB97X-D/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at wB97X-D/3-21G*
 hartrees
Energy at 0K-229.890262
Energy at 298.15K-229.897088
HF Energy-229.890262
Nuclear repulsion energy166.120453
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 wB97X-D/3-21G*
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' 3212 3044 12.95      
2 A' 3183 3017 1.09      
3 A' 3146 2982 14.79      
4 A' 3123 2960 6.43      
5 A' 1877 1779 195.75      
6 A' 1546 1465 4.47      
7 A' 1500 1422 1.82      
8 A' 1284 1217 20.83      
9 A' 1259 1194 1.94      
10 A' 1118 1060 1.08      
11 A' 971 921 1.98      
12 A' 861 816 0.68      
13 A' 751 712 8.20      
14 A' 674 639 2.13      
15 A' 445 422 0.02      
16 A' 67 63 3.75      
17 A" 3188 3022 1.58      
18 A" 3119 2956 5.23      
19 A" 1490 1412 32.36      
20 A" 1311 1243 0.00      
21 A" 1269 1203 0.65      
22 A" 1232 1167 0.45      
23 A" 1058 1002 116.72      
24 A" 1026 973 2.60      
25 A" 929 880 0.83      
26 A" 671 636 0.00      
27 A" 457 434 2.09      

Unscaled Zero Point Vibrational Energy (zpe) 20383.3 cm-1
Scaled (by 0.9478) Zero Point Vibrational Energy (zpe) 19319.3 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 wB97X-D/3-21G*
ABC
0.35728 0.15675 0.11675

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -0.028 1.900 0.000
C2 -0.009 0.686 0.000
C3 0.010 -0.390 1.116
C4 0.010 -0.390 -1.116
C5 0.010 -1.492 0.000
H6 0.903 -2.118 0.000
H7 -0.884 -2.114 0.000
H8 -0.876 -0.370 1.756
H9 -0.876 -0.370 -1.756
H10 0.911 -0.354 1.734
H11 0.911 -0.354 -1.734

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
O11.21422.54822.54823.39274.12414.10462.99252.99252.99512.9951
C21.21421.55081.55082.17852.94842.93372.22452.22452.22202.2220
C32.54821.55082.23261.56872.24202.24021.09303.00561.09312.9897
C42.54821.55082.23261.56872.24202.24023.00561.09302.98971.0931
C53.39272.17851.56871.56871.08961.08962.26432.26432.26162.2616
H64.12412.94842.24202.24201.08961.78703.04953.04952.47342.4734
H74.10462.93372.24022.24021.08961.78702.47472.47473.05453.0545
H82.99252.22451.09303.00562.26433.04952.47473.51121.78753.9208
H92.99252.22453.00561.09302.26433.04952.47473.51123.92081.7875
H102.99512.22201.09312.98972.26162.47343.05451.78753.92083.4683
H112.99512.22202.98971.09312.26162.47343.05453.92081.78753.4683

picture of Cyclobutanone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C3 133.960 O1 C2 C4 133.960
C2 C3 C5 88.589 C2 C3 H8 113.445
C2 C3 H10 113.231 C2 C4 C5 88.589
C2 C4 H9 113.445 C2 C4 H11 113.231
C3 C2 C4 92.079 C3 C5 C4 90.733
C3 C5 H6 113.782 C3 C5 H7 113.634
C4 C5 H6 113.782 C4 C5 H7 113.634
C5 C3 H8 115.420 C5 C3 H10 115.177
C5 C4 H9 115.420 C5 C4 H11 115.177
H6 C5 H7 110.179 H8 C3 H10 109.704
H9 C4 H11 109.704
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.447      
2 C 0.412      
3 C -0.485      
4 C -0.485      
5 C -0.457      
6 H 0.226      
7 H 0.233      
8 H 0.248      
9 H 0.248      
10 H 0.253      
11 H 0.253      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.609 -2.624 0.000 2.694
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.397 1.292 0.000
y 1.292 -35.961 0.000
z 0.000 0.000 -28.446
Traceless
 xyz
x 3.807 1.292 0.000
y 1.292 -7.540 0.000
z 0.000 0.000 3.733
Polar
3z2-r27.466
x2-y27.565
xy1.292
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.697 -0.321 0.000
y -0.321 6.320 0.000
z 0.000 0.000 5.821


<r2> (average value of r2) Å2
<r2> 107.420
(<r2>)1/2 10.364