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All results from a given calculation for C4H6O (Cyclobutanone)

using model chemistry: G4

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at G4
 hartrees
Energy at 0K-231.088948
Energy at 298.15K-231.083841
HF Energy-231.246315
Nuclear repulsion energy167.104264
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 B3LYP/6-31G(2df,p)
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' 3140 3030 25.51      
2 A' 3105 2997 5.03      
3 A' 3085 2977 23.68      
4 A' 3060 2953 7.47      
5 A' 1896 1829 267.27      
6 A' 1496 1444 0.34      
7 A' 1444 1393 1.44      
8 A' 1240 1197 2.25      
9 A' 1221 1178 0.22      
10 A' 1097 1059 0.34      
11 A' 972 938 1.52      
12 A' 844 814 2.12      
13 A' 735 709 3.49      
14 A' 675 652 1.13      
15 A' 407 393 1.12      
16 A' 49 47 3.54      
17 A" 3111 3002 1.65      
18 A" 3056 2949 15.45      
19 A" 1428 1378 13.26      
20 A" 1272 1227 8.97      
21 A" 1226 1183 0.42      
22 A" 1185 1143 1.15      
23 A" 1075 1037 82.96      
24 A" 945 912 0.14      
25 A" 925 893 0.77      
26 A" 622 600 0.01      
27 A" 459 443 2.80      

Unscaled Zero Point Vibrational Energy (zpe) 19883.6 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 19187.7 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 B3LYP/6-31G(2df,p)
ABC
0.35986 0.15975 0.11830

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.093 1.874 0.000
C2 0.000 0.682 0.000
C3 -0.056 -0.384 1.110
C4 -0.056 -0.384 -1.110
C5 0.035 -1.476 0.000
H6 -0.775 -2.206 0.000
H7 0.986 -2.012 0.000
H8 0.759 -0.337 1.838
H9 0.759 -0.337 -1.838
H10 -1.004 -0.365 1.658
H11 -1.004 -0.365 -1.658

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
O11.19562.52082.52083.35134.17193.98812.95112.95112.99462.9946
C21.19561.54021.54022.15912.99082.86952.23402.23402.20322.2032
C32.52081.54022.21981.56002.25152.22931.09353.05851.09482.9256
C42.52081.54022.21981.56002.25152.22933.05851.09352.92561.0948
C53.35132.15911.56001.56001.09061.09132.28012.28012.25022.2502
H64.17192.99082.25152.25151.09061.77163.03713.03712.48812.4881
H73.98812.86952.22932.22931.09131.77162.49732.49733.06943.0694
H82.95112.23401.09353.05852.28013.03712.49733.67531.77173.9149
H92.95112.23403.05851.09352.28013.03712.49733.67533.91491.7717
H102.99462.20321.09482.92562.25022.48813.06941.77173.91493.3159
H112.99462.20322.92561.09482.25022.48813.06943.91491.77173.3159

picture of Cyclobutanone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C3 133.821 O1 C2 C4 133.821
C2 C3 C5 88.459 C2 C3 H8 113.658
C2 C3 H10 113.658 C2 C4 C5 88.459
C2 C4 H9 113.658 C2 C4 H11 113.658
C3 C2 C4 92.359 C3 C5 C4 90.723
C3 C5 H6 114.247 C3 C5 H7 114.247
C4 C5 H6 114.247 C4 C5 H7 114.247
C5 C3 H8 116.030 C5 C3 H10 116.030
C5 C4 H9 116.030 C5 C4 H11 116.030
H6 C5 H7 108.468 H8 C3 H10 108.134
H9 C4 H11 108.134
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.282      
2 C 0.404      
3 C -0.331      
4 C -0.331      
5 C -0.216      
6 H 0.111      
7 H 0.115      
8 H 0.131      
9 H 0.131      
10 H 0.133      
11 H 0.133      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.220 -2.705 0.000 2.714
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


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> 106.264
(<r2>)1/2 10.308