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All results from a given calculation for C4H6O (Cyclobutanone)

using model chemistry: MP2=FULL/3-21G*

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=FULL/3-21G*
 hartrees
Energy at 0K-229.001130
Energy at 298.15K-229.007976
Nuclear repulsion energy164.616068
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=FULL/3-21G*
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' 3210 3043 19.01      
2 A' 3181 3016 3.36      
3 A' 3142 2979 16.40      
4 A' 3117 2955 4.79      
5 A' 1737 1647 113.94      
6 A' 1580 1498 0.68      
7 A' 1543 1463 2.76      
8 A' 1288 1221 15.49      
9 A' 1256 1191 1.76      
10 A' 1119 1061 0.49      
11 A' 944 895 1.12      
12 A' 871 825 0.48      
13 A' 734 696 6.23      
14 A' 651 617 0.30      
15 A' 431 408 0.13      
16 A' 102 97 2.38      
17 A" 3186 3020 3.92      
18 A" 3114 2952 8.75      
19 A" 1531 1451 15.89      
20 A" 1309 1241 0.00      
21 A" 1283 1216 0.65      
22 A" 1226 1162 0.07      
23 A" 1026 972 39.60      
24 A" 1014 961 64.02      
25 A" 891 845 2.21      
26 A" 697 661 0.10      
27 A" 447 423 1.01      

Unscaled Zero Point Vibrational Energy (zpe) 20313.2 cm-1
Scaled (by 0.948) Zero Point Vibrational Energy (zpe) 19256.9 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=FULL/3-21G*
ABC
0.34826 0.15385 0.11494

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -0.523 1.847 0.000
C2 -0.130 0.678 0.000
C3 0.188 -0.370 1.126
C4 0.188 -0.370 -1.126
C5 0.188 -1.480 0.000
H6 -0.742 -2.051 0.000
H7 1.044 -2.155 0.000
H8 1.184 -0.199 1.550
H9 1.184 -0.199 -1.550
H10 -0.550 -0.461 1.926
H11 -0.550 -0.461 -1.926

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
O11.23282.58642.58643.40233.90404.29803.08233.08233.00603.0060
C21.23281.57121.57122.18202.79723.06722.21312.21312.27672.2767
C32.58641.57122.25211.58122.22692.27741.09552.86031.09213.1411
C42.58641.57122.25211.58122.22692.27742.86031.09553.14111.0921
C53.40232.18201.58121.58121.09181.09012.24402.24402.30042.3004
H63.90402.79722.22692.22691.09181.78983.08923.08922.50472.5047
H74.29803.06722.27742.27741.09011.78982.49972.49973.01983.0198
H83.08232.21311.09552.86032.24403.08922.49973.09981.79323.8929
H93.08232.21312.86031.09552.24403.08922.49973.09983.89291.7932
H103.00602.27671.09213.14112.30042.50473.01981.79323.89293.8516
H113.00602.27673.14111.09212.30042.50473.01983.89291.79323.8516

picture of Cyclobutanone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C3 134.196 O1 C2 C4 134.196
C2 C3 C5 87.602 C2 C3 H8 110.918
C2 C3 H10 116.328 C2 C4 C5 87.602
C2 C4 H9 110.918 C2 C4 H11 116.328
C3 C2 C4 91.560 C3 C5 C4 90.816
C3 C5 H6 111.529 C3 C5 H7 115.761
C4 C5 H6 111.529 C4 C5 H7 115.761
C5 C3 H8 112.664 C5 C3 H10 117.585
C5 C4 H9 112.664 C5 C4 H11 117.585
H6 C5 H7 110.237 H8 C3 H10 110.110
H9 C4 H11 110.110
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability