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All results from a given calculation for C4H6O (Cyclobutanone)

using model chemistry: CCD/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 CCD/6-31G*
 hartrees
Energy at 0K-230.514896
Energy at 298.15K-230.521709
HF Energy-229.796396
Nuclear repulsion energy167.210018
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 CCD/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' 3181 3011 26.17      
2 A' 3156 2987 3.60      
3 A' 3124 2956 20.36      
4 A' 3104 2938 6.93      
5 A' 1937 1834 223.98      
6 A' 1556 1472 0.68      
7 A' 1508 1427 1.00      
8 A' 1290 1221 4.67      
9 A' 1249 1183 0.12      
10 A' 1136 1075 0.51      
11 A' 1004 950 1.43      
12 A' 879 832 0.51      
13 A' 764 723 3.39      
14 A' 692 655 2.00      
15 A' 409 387 1.52      
16 A' 56 53 3.68      
17 A" 3161 2992 2.11      
18 A" 3101 2935 12.91      
19 A" 1496 1416 16.85      
20 A" 1313 1243 8.76      
21 A" 1260 1193 2.97      
22 A" 1230 1165 2.30      
23 A" 1144 1083 77.82      
24 A" 984 931 0.13      
25 A" 964 913 0.01      
26 A" 683 646 0.00      
27 A" 471 446 5.20      

Unscaled Zero Point Vibrational Energy (zpe) 20425.3 cm-1
Scaled (by 0.9465) Zero Point Vibrational Energy (zpe) 19332.6 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 CCD/6-31G*
ABC
0.35941 0.16014 0.11872

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -0.071 1.878 0.000
C2 -0.026 0.676 0.000
C3 0.027 -0.383 1.113
C4 0.027 -0.383 -1.113
C5 0.027 -1.475 0.000
H6 0.915 -2.112 0.000
H7 -0.861 -2.115 0.000
H8 -0.843 -0.373 1.779
H9 -0.843 -0.373 -1.779
H10 0.935 -0.327 1.727
H11 0.935 -0.327 -1.727

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
O11.20282.52212.52213.35434.11044.07062.97122.97122.97602.9760
C21.20281.53711.53712.15152.94272.91362.22142.22142.21592.2159
C32.52211.53712.22511.55862.23972.24181.09633.01991.09732.9814
C42.52211.53712.22511.55862.23972.24183.01991.09632.98141.0973
C53.35432.15151.55861.55861.09341.09482.26662.26662.26332.2633
H64.11042.94272.23972.23971.09341.77643.04703.04702.48362.4836
H74.07062.91362.24182.24181.09481.77642.49042.49043.06643.0664
H82.97122.22141.09633.01992.26663.04702.49043.55861.77923.9313
H92.97122.22143.01991.09632.26663.04702.49043.55863.93131.7792
H102.97602.21591.09732.98142.26332.48363.06641.77923.93133.4536
H112.97602.21592.98141.09732.26332.48363.06643.93131.77923.4536

picture of Cyclobutanone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C3 133.628 O1 C2 C4 133.628
C2 C3 C5 88.052 C2 C3 H8 113.984
C2 C3 H10 113.463 C2 C4 C5 88.052
C2 C4 H9 113.984 C2 C4 H11 113.463
C3 C2 C4 92.736 C3 C5 C4 91.091
C3 C5 H6 114.093 C3 C5 H7 114.185
C4 C5 H6 114.093 C4 C5 H7 114.185
C5 C3 H8 116.155 C5 C3 H10 115.809
C5 C4 H9 116.155 C5 C4 H11 115.809
H6 C5 H7 108.545 H8 C3 H10 108.396
H9 C4 H11 108.396
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability