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All results from a given calculation for C3H6O (Oxetane)

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

19 10 17 12 22

States and conformations

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

Conformer 1 (C2V)

Jump to S1C2
Energy calculated at QCISD/6-31G**
 hartrees
Energy at 0K-192.559405
Energy at 298.15K 
HF Energy-191.917469
Nuclear repulsion energy128.063895
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 QCISD/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 3155 2970 24.01      
2 A1 3106 2924 2.38      
3 A1 1608 1514 0.00      
4 A1 1550 1459 1.26      
5 A1 1426 1343 6.60      
6 A1 1076 1013 5.22      
7 A1 958 902 26.67      
8 A1 826 778 4.04      
9 A2 3149 2964 0.00      
10 A2 1269 1195 0.00      
11 A2 1190 1121 0.00      
12 A2 864 814 0.00      
13 B1 3214 3026 37.50      
14 B1 3148 2964 85.12      
15 B1 1229 1157 1.34      
16 B1 1175 1106 2.60      
17 B1 785 739 0.00      
18 B1 56i 53i 3.32      
19 B2 3097 2915 143.95      
20 B2 1580 1487 7.36      
21 B2 1348 1269 0.55      
22 B2 1304 1228 6.89      
23 B2 1073 1010 92.27      
24 B2 977 920 6.24      

Unscaled Zero Point Vibrational Energy (zpe) 19526.0 cm-1
Scaled (by 0.9414) Zero Point Vibrational Energy (zpe) 18381.8 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 QCISD/6-31G**
ABC
0.40299 0.39273 0.22418

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.073
C2 0.000 0.000 -1.074
C3 0.000 1.037 0.063
C4 0.000 -1.037 0.063
H5 0.888 0.000 -1.704
H6 -0.888 0.000 -1.704
H7 0.890 1.668 0.129
H8 -0.890 1.668 0.129
H9 -0.890 -1.668 0.129
H10 0.890 -1.668 0.129

Atom - Atom Distances (Å)
  O1 C2 C3 C4 H5 H6 H7 H8 H9 H10
O12.14751.44851.44852.91552.91552.11362.11362.11362.1136
C22.14751.53901.53901.08831.08832.24092.24092.24092.2409
C31.44851.53902.07492.23252.23251.09261.09262.84912.8491
C41.44851.53902.07492.23252.23252.84912.84911.09261.0926
H52.91551.08832.23252.23251.77552.47813.04963.04962.4781
H62.91551.08832.23252.23251.77553.04962.47812.47813.0496
H72.11362.24091.09262.84912.47813.04961.77943.78143.3366
H82.11362.24091.09262.84913.04962.47811.77943.33663.7814
H92.11362.24092.84911.09263.04962.47813.78143.33661.7794
H102.11362.24092.84911.09262.47813.04963.33663.78141.7794

picture of Oxetane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C3 C2 91.869 O1 C3 H7 111.796
O1 C3 H8 111.796 O1 C4 C2 91.869
O1 C4 H9 111.796 O1 C4 H10 111.796
C2 C3 H7 115.715 C2 C3 H8 115.715
C2 C4 H9 115.715 C2 C4 H10 115.715
C3 O1 C4 91.491 C3 C2 C4 84.772
C3 C2 H5 115.293 C3 C2 H6 115.293
C4 C2 H5 115.293 C4 C2 H6 115.293
H5 C2 H6 109.317 H7 C3 H8 109.027
H9 C4 H10 109.027
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS)

Jump to S1C1
Energy calculated at QCISD/6-31G**
 hartrees
Energy at 0K-192.559436
Energy at 298.15K-192.566733
HF Energy-191.917286
Nuclear repulsion energy128.154639
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 QCISD/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' 3214 3026 38.03      
2 A' 3157 2972 43.51      
3 A' 3150 2965 50.68      
4 A' 3102 2920 18.60      
5 A' 1607 1513 0.04      
6 A' 1550 1459 1.19      
7 A' 1425 1341 6.38      
8 A' 1233 1161 1.12      
9 A' 1181 1112 3.21      
10 A' 1078 1015 5.72      
11 A' 956 900 25.31      
12 A' 859 808 5.76      
13 A' 753 709 0.47      
14 A' 78 74 3.64      
15 A" 3153 2968 12.54      
16 A" 3093 2912 127.47      
17 A" 1578 1486 7.02      
18 A" 1348 1269 0.36      
19 A" 1307 1231 6.49      
20 A" 1264 1190 0.64      
21 A" 1187 1118 0.31      
22 A" 1067 1005 89.50      
23 A" 978 920 4.75      
24 A" 863 812 0.72      

Unscaled Zero Point Vibrational Energy (zpe) 19589.2 cm-1
Scaled (by 0.9414) Zero Point Vibrational Energy (zpe) 18441.3 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 QCISD/6-31G**
ABC
0.40337 0.39274 0.22533

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.151 -1.062 0.000
C2 -0.041 1.073 0.000
C3 -0.041 -0.066 1.035
C4 -0.041 -0.066 -1.035
H5 0.869 1.670 0.000
H6 -0.907 1.732 0.000
H7 0.772 -0.073 1.763
H8 -0.991 -0.205 1.558
H9 0.772 -0.073 -1.763
H10 -0.991 -0.205 -1.558

Atom - Atom Distances (Å)
  O1 C2 C3 C4 H5 H6 H7 H8 H9 H10
O12.14291.44881.44882.82402.98722.11462.11322.11462.1132
C22.14291.53831.53831.08851.08832.25392.22742.25392.2274
C31.44881.53832.06912.21592.24761.09161.09382.91312.7645
C41.44881.53832.06912.21592.24762.91312.76451.09161.0938
H52.82401.08852.21592.21591.77722.48033.06622.48033.0662
H62.98721.08832.24762.24761.77723.03032.48683.03032.4868
H72.11462.25391.09162.91312.48033.03031.78053.52563.7621
H82.11322.22741.09382.76453.06622.48681.78053.76213.1152
H92.11462.25392.91311.09162.48033.03033.52563.76211.7805
H102.11322.22742.76451.09383.06622.48683.76213.11521.7805

picture of Oxetane state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C3 C2 91.630 O1 C3 H7 111.927
O1 C3 H8 111.670 O1 C4 C2 91.630
O1 C4 H9 111.927 O1 C4 H10 111.670
C2 C3 H7 116.955 C2 C3 H8 114.559
C2 C4 H9 116.955 C2 C4 H10 114.559
C3 O1 C4 91.138 C3 C2 C4 84.529
C3 C2 H5 113.943 C3 C2 H6 116.638
C4 C2 H5 113.943 C4 C2 H6 116.638
H5 C2 H6 109.456 H7 C3 H8 109.119
H9 C4 H10 109.119
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability