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All results from a given calculation for C4H6O (Cyclobutanone)

using model chemistry: B3PW91/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3PW91/6-31G*
 hartrees
Energy at 0K-231.144608
Energy at 298.15K-231.151331
Nuclear repulsion energy167.392660
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 B3PW91/6-31G*
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' 3165 3028 24.89      
2 A' 3132 2997 4.48      
3 A' 3108 2973 23.85      
4 A' 3083 2949 8.35      
5 A' 1908 1825 277.48      
6 A' 1521 1455 0.86      
7 A' 1467 1403 1.49      
8 A' 1257 1202 5.67      
9 A' 1233 1179 0.34      
10 A' 1107 1059 0.85      
11 A' 989 946 2.03      
12 A' 855 818 1.07      
13 A' 747 714 5.21      
14 A' 678 649 2.06      
15 A' 403 386 0.75      
16 A' 56 54 4.08      
17 A" 3138 3002 2.06      
18 A" 3078 2945 13.05      
19 A" 1452 1389 17.96      
20 A" 1287 1231 8.20      
21 A" 1237 1183 1.09      
22 A" 1202 1150 2.55      
23 A" 1104 1056 94.37      
24 A" 961 920 0.21      
25 A" 950 909 0.33      
26 A" 636 608 0.00      
27 A" 461 441 3.20      

Unscaled Zero Point Vibrational Energy (zpe) 20107.2 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 19236.6 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 B3PW91/6-31G*
ABC
0.36132 0.16019 0.11881

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -0.106 1.874 0.000
C2 0.000 0.676 0.000
C3 0.064 -0.384 1.106
C4 0.064 -0.384 -1.106
C5 -0.039 -1.471 0.000
H6 -1.000 -1.993 0.000
H7 0.761 -2.214 0.000
H8 1.021 -0.368 1.642
H9 1.021 -0.368 -1.642
H10 -0.742 -0.335 1.845
H11 -0.742 -0.335 -1.845

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
O11.20202.52002.52003.34483.96814.17872.99862.99862.94772.9477
C21.20201.53371.53372.14732.85012.98902.19752.19752.23152.2315
C32.52001.53372.21171.55352.22292.24871.09672.91001.09543.0598
C42.52001.53372.21171.55352.22292.24872.91001.09673.05981.0954
C53.34482.14731.55351.55351.09321.09262.24432.24432.27782.2778
H63.96812.85012.22292.22291.09321.77493.06903.06902.49362.4936
H74.17872.98902.24872.24871.09261.77492.48462.48463.03263.0326
H82.99862.19751.09672.91002.24433.06902.48463.28481.77493.9081
H92.99862.19752.91001.09672.24433.06902.48463.28483.90811.7749
H102.94772.23151.09543.05982.27782.49363.03261.77493.90813.6906
H112.94772.23153.05981.09542.27782.49363.03263.90811.77493.6906

picture of Cyclobutanone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C3 133.837 O1 C2 C4 133.837
C2 C3 C5 88.137 C2 C3 H8 112.256
C2 C3 H10 115.146 C2 C4 C5 88.137
C2 C4 H9 112.256 C2 C4 H11 115.146
C3 C2 C4 92.282 C3 C5 C4 90.771
C3 C5 H6 113.103 C3 C5 H7 115.278
C4 C5 H6 113.103 C4 C5 H7 115.278
C5 C3 H8 114.637 C5 C3 H10 117.574
C5 C4 H9 114.637 C5 C4 H11 117.574
H6 C5 H7 108.591 H8 C3 H10 108.134
H9 C4 H11 108.134
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.422     -0.493
2 C 0.433     0.616
3 C -0.413     -0.339
4 C -0.413     -0.339
5 C -0.352     0.070
6 H 0.182     0.024
7 H 0.178     0.021
8 H 0.202     0.111
9 H 0.202     0.111
10 H 0.201     0.108
11 H 0.201     0.108


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.269 -2.808 0.000 2.821
CHELPG        
AIM        
ESP 0.301 -2.873 0.000 2.889


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.855 0.370 0.000
y 0.370 -35.782 0.000
z 0.000 0.000 -28.183
Traceless
 xyz
x 4.128 0.370 0.000
y 0.370 -7.763 0.000
z 0.000 0.000 3.635
Polar
3z2-r27.271
x2-y27.928
xy0.370
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> 106.035
(<r2>)1/2 10.297