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All results from a given calculation for C3H6O (Oxetane)

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

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/6-31+G**
 hartrees
Energy at 0K-192.570465
Energy at 298.15K 
HF Energy-191.921893
Nuclear repulsion energy127.858086
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/6-31+G**
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 3147 2975 26.71      
2 A1 3110 2940 1.18      
3 A1 1595 1508 0.10      
4 A1 1541 1457 2.31      
5 A1 1412 1335 5.65      
6 A1 1066 1008 5.68      
7 A1 947 896 34.54      
8 A1 820 775 4.42      
9 A2 3156 2984 0.00      
10 A2 1257 1188 0.00      
11 A2 1177 1112 0.00      
12 A2 858 811 0.00      
13 B1 3207 3032 41.19      
14 B1 3154 2982 60.95      
15 B1 1220 1153 1.03      
16 B1 1165 1101 2.75      
17 B1 785 742 0.02      
18 B1 86i 81i 5.13      
19 B2 3103 2933 141.75      
20 B2 1568 1482 3.79      
21 B2 1341 1268 0.00      
22 B2 1297 1226 8.14      
23 B2 1058 1000 92.15      
24 B2 972 919 6.80      

Unscaled Zero Point Vibrational Energy (zpe) 19433.9 cm-1
Scaled (by 0.9454) Zero Point Vibrational Energy (zpe) 18372.8 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/6-31+G**
ABC
0.40122 0.39183 0.22344

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.075
C2 0.000 0.000 -1.075
C3 0.000 1.041 0.060
C4 0.000 -1.041 0.060
H5 0.888 0.000 -1.705
H6 -0.888 0.000 -1.705
H7 0.892 1.667 0.134
H8 -0.892 1.667 0.134
H9 -0.892 -1.667 0.134
H10 0.892 -1.667 0.134

Atom - Atom Distances (Å)
  O1 C2 C3 C4 H5 H6 H7 H8 H9 H10
O12.15001.45371.45372.91802.91802.11202.11202.11202.1120
C22.15001.54061.54061.08881.08882.24402.24402.24402.2440
C31.45371.54062.08232.23352.23351.09191.09192.85222.8522
C41.45371.54062.08232.23352.23352.85222.85221.09191.0919
H52.91801.08882.23352.23351.77692.48163.05403.05402.4816
H62.91801.08882.23352.23351.77693.05402.48162.48163.0540
H72.11202.24401.09192.85222.48163.05401.78333.78123.3343
H82.11202.24401.09192.85223.05402.48161.78333.33433.7812
H92.11202.24402.85221.09193.05402.48163.78123.33431.7833
H102.11202.24402.85221.09192.48163.05403.33433.78121.7833

picture of Oxetane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C3 C2 91.740 O1 C3 H7 111.335
O1 C3 H8 111.335 O1 C4 C2 91.740
O1 C4 H9 111.335 O1 C4 H10 111.335
C2 C3 H7 115.905 C2 C3 H8 115.905
C2 C4 H9 115.905 C2 C4 H10 115.905
C3 O1 C4 91.485 C3 C2 C4 85.035
C3 C2 H5 115.220 C3 C2 H6 115.220
C4 C2 H5 115.220 C4 C2 H6 115.220
H5 C2 H6 109.368 H7 C3 H8 109.488
H9 C4 H10 109.488
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS)

Jump to S1C1
Energy calculated at QCISD/6-31+G**
 hartrees
Energy at 0K-192.570611
Energy at 298.15K-192.577966
HF Energy-191.921511
Nuclear repulsion energy128.042682
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/6-31+G**
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' 3207 3032 42.13      
2 A' 3163 2990 40.44      
3 A' 3144 2972 27.51      
4 A' 3102 2932 26.90      
5 A' 1593 1506 0.12      
6 A' 1540 1456 2.14      
7 A' 1410 1333 5.11      
8 A' 1227 1160 0.66      
9 A' 1177 1112 3.92      
10 A' 1069 1010 6.88      
11 A' 945 893 29.33      
12 A' 870 823 10.36      
13 A' 733 693 0.57      
14 A' 120 114 5.52      
15 A" 3163 2991 19.86      
16 A" 3096 2927 114.15      
17 A" 1565 1480 3.39      
18 A" 1342 1268 0.05      
19 A" 1301 1230 7.06      
20 A" 1248 1180 1.38      
21 A" 1172 1108 0.75      
22 A" 1047 990 86.90      
23 A" 972 919 3.76      
24 A" 855 809 1.39      

Unscaled Zero Point Vibrational Energy (zpe) 19530.2 cm-1
Scaled (by 0.9454) Zero Point Vibrational Energy (zpe) 18463.9 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 QCISD/6-31+G**
ABC
0.40198 0.39189 0.22575

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.214 -1.051 0.000
C2 -0.058 1.072 0.000
C3 -0.058 -0.067 1.035
C4 -0.058 -0.067 -1.035
H5 0.861 1.656 0.000
H6 -0.918 1.740 0.000
H7 0.723 -0.059 1.797
H8 -1.029 -0.248 1.505
H9 0.723 -0.059 -1.797
H10 -1.029 -0.248 -1.505

Atom - Atom Distances (Å)
  O1 C2 C3 C4 H5 H6 H7 H8 H9 H10
O12.14051.45411.45412.78403.01222.11472.11082.11472.1108
C22.14051.53901.53901.08911.08892.26192.22502.26192.2250
C31.45411.53902.07052.21052.25321.09051.09372.93762.7258
C41.45411.53902.07052.21052.25322.93762.72581.09051.0937
H52.78401.08912.21052.21051.78052.48803.07642.48803.0764
H63.01221.08892.25322.25321.78053.02592.49653.02592.4965
H72.11472.26191.09052.93762.48803.02591.78543.59363.7426
H82.11082.22501.09372.72583.07642.49651.78543.74263.0108
H92.11472.26192.93761.09052.48803.02593.59363.74261.7854
H102.11082.22502.72581.09373.07642.49653.74263.01081.7854

picture of Oxetane state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C3 C2 91.260 O1 C3 H7 111.613
O1 C3 H8 111.095 O1 C4 C2 91.260
O1 C4 H9 111.613 O1 C4 H10 111.095
C2 C3 H7 117.664 C2 C3 H8 114.312
C2 C4 H9 117.664 C2 C4 H10 114.312
C3 O1 C4 90.784 C3 C2 C4 84.546
C3 C2 H5 113.402 C3 C2 H6 117.018
C4 C2 H5 113.402 C4 C2 H6 117.018
H5 C2 H6 109.663 H7 C3 H8 109.650
H9 C4 H10 109.650
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability