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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-230.174260
Energy at 298.15K-230.181069
HF Energy-229.686607
Nuclear repulsion energy164.689221
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 A1 3111 2977 21.63      
2 A1 3090 2957 8.34      
3 A1 1706 1632 135.24      
4 A1 1568 1500 0.12      
5 A1 1529 1463 0.28      
6 A1 1287 1231 7.68      
7 A1 968 926 1.24      
8 A1 849 812 0.92      
9 A1 671 642 0.43      
10 A2 3151 3015 0.00      
11 A2 1254 1200 0.00      
12 A2 989 947 0.00      
13 A2 726 695 0.00      
14 B1 3176 3039 32.72      
15 B1 3144 3008 3.75      
16 B1 1243 1190 0.00      
17 B1 1140 1091 0.40      
18 B1 783 749 4.35      
19 B1 403 386 1.03      
20 B1 61 58 3.90      
21 B2 3087 2954 15.39      
22 B2 1520 1454 17.59      
23 B2 1302 1246 2.81      
24 B2 1247 1194 0.50      
25 B2 1104 1057 101.33      
26 B2 928 887 0.05      
27 B2 455 435 3.45      

Unscaled Zero Point Vibrational Energy (zpe) 20246.0 cm-1
Scaled (by 0.9568) Zero Point Vibrational Energy (zpe) 19371.4 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
0.35146 0.15470 0.11443

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.920
C2 0.000 0.000 0.673
C3 0.000 1.128 -0.392
C4 0.000 -1.128 -0.392
C5 0.000 0.000 -1.496
H6 0.891 0.000 -2.134
H7 -0.891 0.000 -2.134
H8 -0.892 1.769 -0.363
H9 -0.892 -1.769 -0.363
H10 0.892 1.769 -0.363
H11 0.892 -1.769 -0.363

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
O11.24702.57182.57183.41564.15074.15073.02273.02273.02273.0227
C21.24701.55081.55082.16862.94502.94502.23582.23582.23582.2358
C32.57181.55082.25611.57862.25912.25911.09883.03161.09883.0316
C42.57181.55082.25611.57862.25912.25913.03161.09883.03161.0988
C53.41562.16861.57861.57861.09601.09602.28242.28242.28242.2824
H64.15072.94502.25912.25911.09601.78173.07343.07342.50362.5036
H74.15072.94502.25912.25911.09601.78172.50362.50363.07343.0734
H83.02272.23581.09883.03162.28243.07342.50363.53871.78343.9627
H93.02272.23583.03161.09882.28243.07342.50363.53873.96271.7834
H103.02272.23581.09883.03162.28242.50363.07341.78343.96273.5387
H113.02272.23583.03161.09882.28242.50363.07343.96271.78343.5387

picture of Cyclobutanone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C3 133.334 O1 C2 C4 133.334
C2 C3 C5 87.726 C2 C3 H8 114.001
C2 C3 H10 114.001 C2 C4 C5 87.726
C2 C4 H9 114.001 C2 C4 H11 114.001
C3 C2 C4 93.332 C3 C5 C4 91.216
C3 C5 H6 114.048 C3 C5 H7 114.048
C4 C5 H6 114.048 C4 C5 H7 114.048
C5 C3 H8 115.801 C5 C3 H10 115.801
C5 C4 H9 115.801 C5 C4 H11 115.801
H6 C5 H7 108.745 H8 C3 H10 108.497
H9 C4 H11 108.497
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability