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All results from a given calculation for C4H6O (Cyclobutanone)

using model chemistry: PBEPBE/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 PBEPBE/6-31G**
 hartrees
Energy at 0K-230.948443
Energy at 298.15K-230.955007
Nuclear repulsion energy166.340300
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 PBEPBE/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' 3091 3049 20.99      
2 A' 3056 3014 4.43      
3 A' 3034 2992 23.36      
4 A' 3005 2964 7.00      
5 A' 1834 1808 249.35      
6 A' 1459 1439 0.65      
7 A' 1403 1384 1.94      
8 A' 1199 1182 5.66      
9 A' 1187 1170 0.54      
10 A' 1057 1042 0.52      
11 A' 961 947 2.21      
12 A' 824 812 1.59      
13 A' 720 710 5.53      
14 A' 656 647 1.53      
15 A' 385 380 0.31      
16 A' 45 45 3.69      
17 A" 3061 3019 1.89      
18 A" 3001 2960 11.68      
19 A" 1386 1367 15.75      
20 A" 1231 1214 9.72      
21 A" 1190 1174 0.76      
22 A" 1145 1130 2.69      
23 A" 1052 1038 92.88      
24 A" 922 910 1.11      
25 A" 917 904 0.24      
26 A" 597 589 0.00      
27 A" 444 438 1.71      

Unscaled Zero Point Vibrational Energy (zpe) 19429.7 cm-1
Scaled (by 0.9863) Zero Point Vibrational Energy (zpe) 19163.5 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 PBEPBE/6-31G**
ABC
0.35738 0.15803 0.11729

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -0.288 1.869 0.000
C2 -0.064 0.677 0.000
C3 0.102 -0.380 1.111
C4 0.102 -0.380 -1.111
C5 0.102 -1.476 0.000
H6 -0.811 -2.089 0.000
H7 0.973 -2.146 0.000
H8 1.058 -0.271 1.651
H9 1.058 -0.271 -1.651
H10 -0.708 -0.407 1.859
H11 -0.708 -0.407 -1.859

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
O11.21282.53902.53903.36713.99234.20793.02003.02002.96882.9688
C21.21281.54301.54302.15882.86493.00712.21052.21052.24632.2463
C32.53901.54302.22291.56032.23342.26071.10392.92561.10253.0791
C42.53901.54302.22291.56032.23342.26072.92561.10393.07911.1025
C53.36712.15881.56031.56031.09991.09942.25652.25652.29202.2920
H63.99232.86492.23342.23341.09991.78563.08643.08642.50912.5091
H74.20793.00712.26072.26071.09941.78562.49922.49923.05043.0504
H83.02002.21051.10392.92562.25653.08642.49923.30231.78383.9321
H93.02002.21052.92561.10392.25653.08642.49923.30233.93211.7838
H102.96882.24631.10253.07912.29202.50913.05041.78383.93213.7184
H112.96882.24633.07911.10252.29202.50913.05043.93211.78383.7184

picture of Cyclobutanone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C3 133.894 O1 C2 C4 133.894
C2 C3 C5 88.158 C2 C3 H8 112.196
C2 C3 H10 115.226 C2 C4 C5 88.158
C2 C4 H9 112.196 C2 C4 H11 115.226
C3 C2 C4 92.163 C3 C5 C4 90.845
C3 C5 H6 113.043 C3 C5 H7 115.323
C4 C5 H6 113.043 C4 C5 H7 115.323
C5 C3 H8 114.684 C5 C3 H10 117.778
C5 C4 H9 114.684 C5 C4 H11 117.778
H6 C5 H7 108.560 H8 C3 H10 107.897
H9 C4 H11 107.897
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.387      
2 C 0.363      
3 C -0.288      
4 C -0.288      
5 C -0.256      
6 H 0.132      
7 H 0.125      
8 H 0.151      
9 H 0.151      
10 H 0.148      
11 H 0.148      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.515 -2.631 0.000 2.681
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.214 1.053 0.000
y 1.053 -35.409 0.000
z 0.000 0.000 -28.300
Traceless
 xyz
x 3.640 1.053 0.000
y 1.053 -7.152 0.000
z 0.000 0.000 3.512
Polar
3z2-r27.023
x2-y27.195
xy1.053
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.221 -0.316 0.000
y -0.316 7.106 0.000
z 0.000 0.000 6.646


<r2> (average value of r2) Å2
<r2> 106.988
(<r2>)1/2 10.344