return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for C3H6O (Oxetane)

using model chemistry: CCD/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
1 2 no CS 1A'

Conformer 1 (C2V)

Jump to S1C2
Energy calculated at CCD/3-21G
 hartrees
Energy at 0K-191.259025
Energy at 298.15K-191.266237
HF Energy-190.835866
Nuclear repulsion energy124.738408
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/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 A1 3096 3011 12.56      
2 A1 3075 2990 8.35      
3 A1 1613 1569 0.28      
4 A1 1554 1511 2.67      
5 A1 1376 1338 0.02      
6 A1 992 964 0.01      
7 A1 854 830 6.51      
8 A1 804 782 6.52      
9 A2 3121 3034 0.00      
10 A2 1276 1241 0.00      
11 A2 1144 1113 0.00      
12 A2 880 856 0.00      
13 B1 3156 3069 44.25      
14 B1 3118 3032 40.93      
15 B1 1221 1188 1.90      
16 B1 1110 1079 1.45      
17 B1 775 754 0.69      
18 B1 77 74 3.89      
19 B2 3068 2983 85.11      
20 B2 1587 1543 1.75      
21 B2 1319 1282 15.43      
22 B2 1295 1259 2.80      
23 B2 984 956 38.74      
24 B2 902 877 6.73      

Unscaled Zero Point Vibrational Energy (zpe) 19198.3 cm-1
Scaled (by 0.9723) Zero Point Vibrational Energy (zpe) 18666.5 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/3-21G
ABC
0.37985 0.37385 0.21157

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.117
C2 0.000 0.000 -1.093
C3 0.000 1.077 0.053
C4 0.000 -1.077 0.053
H5 0.898 0.000 -1.718
H6 -0.898 0.000 -1.718
H7 0.901 1.698 0.105
H8 -0.901 1.698 0.105
H9 -0.901 -1.698 0.105
H10 0.901 -1.698 0.105

Atom - Atom Distances (Å)
  O1 C2 C3 C4 H5 H6 H7 H8 H9 H10
O12.20971.51431.51432.97412.97412.17252.17252.17252.1725
C22.20971.57261.57261.09451.09452.26482.26482.26482.2648
C31.51431.57262.15482.25932.25931.09521.09522.91852.9185
C41.51431.57262.15482.25932.25932.91852.91851.09521.0952
H52.97411.09452.25932.25931.79632.49143.07303.07302.4914
H62.97411.09452.25932.25931.79633.07302.49142.49143.0730
H72.17252.26481.09522.91852.49143.07301.80173.84453.3962
H82.17252.26481.09522.91853.07302.49141.80173.39623.8445
H92.17252.26482.91851.09523.07302.49143.84453.39621.8017
H102.17252.26482.91851.09522.49143.07303.39623.84451.8017

picture of Oxetane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C3 C2 91.403 O1 C3 H7 111.710
O1 C3 H8 111.710 O1 C4 C2 91.403
O1 C4 H9 111.710 O1 C4 H10 111.710
C2 C3 H7 115.014 C2 C3 H8 115.014
C2 C4 H9 115.014 C2 C4 H10 115.014
C3 O1 C4 90.709 C3 C2 C4 86.484
C3 C2 H5 114.603 C3 C2 H6 114.603
C4 C2 H5 114.603 C4 C2 H6 114.603
H5 C2 H6 110.287 H7 C3 H8 110.674
H9 C4 H10 110.674
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS)

Jump to S1C1
Energy calculated at CCD/3-21G
 hartrees
Energy at 0K-191.259026
Energy at 298.15K-191.266239
HF Energy-190.835860
Nuclear repulsion energy124.741747
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/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' 3155 3068 44.64      
2 A' 3117 3031 40.59      
3 A' 3096 3010 12.52      
4 A' 3075 2989 8.42      
5 A' 1613 1569 0.28      
6 A' 1554 1511 2.67      
7 A' 1376 1338 0.02      
8 A' 1222 1188 1.91      
9 A' 1110 1079 1.45      
10 A' 992 965 0.01      
11 A' 854 830 6.50      
12 A' 804 782 6.53      
13 A' 775 754 0.69      
14 A' 77 75 3.89      
15 A" 3120 3034 0.00      
16 A" 3068 2983 85.14      
17 A" 1587 1543 1.75      
18 A" 1319 1282 15.52      
19 A" 1296 1260 2.73      
20 A" 1277 1241 0.00      
21 A" 1144 1113 0.00      
22 A" 983 956 38.60      
23 A" 903 878 6.85      
24 A" 881 856 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 19198.8 cm-1
Scaled (by 0.9723) Zero Point Vibrational Energy (zpe) 18667.0 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/3-21G
ABC
0.37991 0.37385 0.21159

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.001 -1.117 0.000
C2 -0.000 1.092 0.000
C3 -0.000 -0.053 1.077
C4 -0.000 -0.053 -1.077
H5 0.898 1.718 0.000
H6 -0.898 1.719 0.000
H7 0.900 -0.104 1.699
H8 -0.902 -0.105 1.697
H9 0.900 -0.104 -1.699
H10 -0.902 -0.105 -1.697

Atom - Atom Distances (Å)
  O1 C2 C3 C4 H5 H6 H7 H8 H9 H10
O12.20971.51441.51442.97382.97492.17262.17262.17262.1726
C22.20971.57231.57231.09461.09462.26472.26452.26472.2645
C31.51441.57232.15452.25912.25931.09531.09532.91892.9178
C41.51441.57232.15452.25912.25932.91892.91781.09531.0953
H52.97381.09462.25912.25911.79602.49153.07302.49153.0730
H62.97491.09462.25932.25931.79603.07282.49143.07282.4914
H72.17262.26471.09532.91892.49153.07281.80163.39783.8445
H82.17262.26451.09532.91783.07302.49141.80163.84453.3948
H92.17262.26472.91891.09532.49153.07283.39783.84451.8016
H102.17262.26452.91781.09533.07302.49143.84453.39481.8016

picture of Oxetane state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C3 C2 91.409 O1 C3 H7 111.713
O1 C3 H8 111.712 O1 C4 C2 91.409
O1 C4 H9 111.713 O1 C4 H10 111.712
C2 C3 H7 115.028 C2 C3 H8 115.008
C2 C4 H9 115.028 C2 C4 H10 115.008
C3 O1 C4 90.689 C3 C2 C4 86.493
C3 C2 H5 114.607 C3 C2 H6 114.622
C4 C2 H5 114.607 C4 C2 H6 114.622
H5 C2 H6 110.247 H7 C3 H8 110.659
H9 C4 H10 110.659
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability