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All results from a given calculation for C4H6O (Cyclobutanone)

using model chemistry: B3PW91/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3PW91/6-311G*
 hartrees
Energy at 0K-231.195498
Energy at 298.15K-231.202250
Nuclear repulsion energy167.700533
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 B3PW91/6-311G*
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' 3143 3026 33.69      
2 A' 3111 2995 6.47      
3 A' 3088 2973 26.44      
4 A' 3063 2948 9.94      
5 A' 1893 1823 316.08      
6 A' 1509 1452 1.99      
7 A' 1454 1400 1.80      
8 A' 1245 1198 8.66      
9 A' 1229 1184 0.37      
10 A' 1102 1061 0.48      
11 A' 986 950 2.66      
12 A' 853 822 1.35      
13 A' 742 715 5.02      
14 A' 679 654 2.36      
15 A' 405 390 0.66      
16 A' 66 63 3.97      
17 A" 3116 3000 3.48      
18 A" 3058 2944 19.32      
19 A" 1438 1385 24.11      
20 A" 1276 1228 5.54      
21 A" 1234 1188 1.07      
22 A" 1191 1146 2.65      
23 A" 1089 1048 94.94      
24 A" 959 923 0.30      
25 A" 942 907 0.21      
26 A" 632 609 0.01      
27 A" 462 445 3.01      

Unscaled Zero Point Vibrational Energy (zpe) 19982.1 cm-1
Scaled (by 0.9627) Zero Point Vibrational Energy (zpe) 19236.8 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 B3PW91/6-311G*
ABC
0.36211 0.16079 0.11931

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -0.122 1.867 0.000
C2 0.000 0.678 0.000
C3 0.073 -0.383 1.104
C4 0.073 -0.383 -1.104
C5 -0.044 -1.469 0.000
H6 -1.011 -1.975 0.000
H7 0.743 -2.224 0.000
H8 1.036 -0.368 1.624
H9 1.036 -0.368 -1.624
H10 -0.719 -0.331 1.856
H11 -0.719 -0.331 -1.856

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
O11.19502.51432.51433.33663.94364.18152.99592.99592.93832.9383
C21.19501.53341.53342.14742.83952.99582.19242.19242.23172.2317
C32.51431.53342.20761.55232.21952.24821.09502.89301.09343.0642
C42.51431.53342.20761.55232.21952.24822.89301.09503.06421.0934
C53.33662.14741.55231.55231.09141.09072.23972.23972.27882.2788
H63.94362.83952.21952.21951.09141.77103.06783.06782.49622.4962
H74.18152.99582.24822.24821.09071.77102.48362.48363.02703.0270
H82.99592.19241.09502.89302.23973.06782.48363.24811.77113.8977
H92.99592.19242.89301.09502.23973.06782.48363.24813.89771.7711
H102.93832.23171.09343.06422.27882.49623.02701.77113.89773.7116
H112.93832.23173.06421.09342.27882.49623.02703.89771.77113.7116

picture of Cyclobutanone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C3 133.925 O1 C2 C4 133.925
C2 C3 C5 88.202 C2 C3 H8 111.967
C2 C3 H10 115.320 C2 C4 C5 88.202
C2 C4 H9 111.967 C2 C4 H11 115.320
C3 C2 C4 92.087 C3 C5 C4 90.646
C3 C5 H6 113.030 C3 C5 H7 115.452
C4 C5 H6 113.030 C4 C5 H7 115.452
C5 C3 H8 114.455 C5 C3 H10 117.890
C5 C4 H9 114.455 C5 C4 H11 117.890
H6 C5 H7 108.514 H8 C3 H10 108.053
H9 C4 H11 108.053
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.287      
2 C 0.322      
3 C -0.525      
4 C -0.525      
5 C -0.459      
6 H 0.237      
7 H 0.233      
8 H 0.252      
9 H 0.252      
10 H 0.250      
11 H 0.250      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.305 -2.790 0.000 2.807
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.193 0.420 0.000
y 0.420 -36.320 0.000
z 0.000 0.000 -28.794
Traceless
 xyz
x 4.364 0.420 0.000
y 0.420 -7.827 0.000
z 0.000 0.000 3.462
Polar
3z2-r26.925
x2-y28.127
xy0.420
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> 105.885
(<r2>)1/2 10.290