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All results from a given calculation for C4H6O (Cyclobutanone)

using model chemistry: MP2/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2/6-31G**
 hartrees
Energy at 0K-230.530890
Energy at 298.15K-230.537778
HF Energy-229.805347
Nuclear repulsion energy167.592153
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 MP2/6-31G**
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' 3246 3040 21.97      
2 A' 3222 3018 3.24      
3 A' 3174 2972 20.93      
4 A' 3152 2952 5.04      
5 A' 1861 1743 192.15      
6 A' 1554 1455 0.12      
7 A' 1507 1411 2.81      
8 A' 1277 1196 7.05      
9 A' 1251 1172 0.50      
10 A' 1122 1050 0.43      
11 A' 1006 942 1.22      
12 A' 894 837 0.55      
13 A' 753 705 3.52      
14 A' 686 643 2.24      
15 A' 402 376 0.76      
16 A' 104 97 3.05      
17 A" 3227 3022 5.42      
18 A" 3149 2949 9.64      
19 A" 1492 1397 12.08      
20 A" 1306 1223 7.94      
21 A" 1269 1189 4.16      
22 A" 1209 1132 1.73      
23 A" 1120 1048 74.69      
24 A" 974 912 0.52      
25 A" 959 898 0.38      
26 A" 677 634 0.04      
27 A" 464 435 3.59      

Unscaled Zero Point Vibrational Energy (zpe) 20527.2 cm-1
Scaled (by 0.9365) Zero Point Vibrational Energy (zpe) 19223.7 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 MP2/6-31G**
ABC
0.35808 0.16069 0.12022

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -0.230 1.862 0.000
C2 0.000 0.671 0.000
C3 0.140 -0.386 1.102
C4 0.140 -0.386 -1.102
C5 -0.085 -1.454 0.000
H6 -1.107 -1.826 0.000
H7 0.600 -2.298 0.000
H8 1.156 -0.397 1.502
H9 1.156 -0.397 -1.502
H10 -0.567 -0.326 1.928
H11 -0.567 -0.326 -1.928

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
O11.21342.53112.53113.31883.79104.24183.04603.04602.93612.9361
C21.21341.53341.53342.12602.73133.02842.17482.17482.24352.2435
C32.53111.53342.20451.55092.20122.25401.09142.79491.08873.1123
C42.53111.53342.20451.55092.20122.25402.79491.09143.11231.0887
C53.31882.12601.55091.55091.08821.08702.21622.21622.28472.2847
H63.79102.73132.20122.20121.08821.77133.06923.06922.50172.5017
H74.24183.02842.25402.25401.08701.77132.48552.48552.99402.9940
H83.04602.17481.09142.79492.21623.06922.48553.00321.77593.8386
H93.04602.17482.79491.09142.21623.06922.48553.00323.83861.7759
H102.93612.24351.08873.11232.28472.50172.99401.77593.83863.8563
H112.93612.24353.11231.08872.28472.50172.99403.83861.77593.8563

picture of Cyclobutanone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C3 133.945 O1 C2 C4 133.945
C2 C3 C5 87.146 C2 C3 H8 110.781
C2 C3 H10 116.633 C2 C4 C5 87.146
C2 C4 H9 110.781 C2 C4 H11 116.633
C3 C2 C4 91.916 C3 C5 C4 90.587
C3 C5 H6 111.840 C3 C5 H7 116.296
C4 C5 H6 111.840 C4 C5 H7 116.296
C5 C3 H8 112.860 C5 C3 H10 118.847
C5 C4 H9 112.860 C5 C4 H11 118.847
H6 C5 H7 109.044 H8 C3 H10 109.099
H9 C4 H11 109.099
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability