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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-192.510335
Energy at 298.15K 
HF Energy-191.907326
Nuclear repulsion energy127.831029
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 3112 2963 22.45      
2 A1 3067 2921 2.68      
3 A1 1600 1524 0.00      
4 A1 1544 1471 2.11      
5 A1 1414 1347 4.24      
6 A1 1076 1025 4.91      
7 A1 957 911 28.55      
8 A1 825 785 4.24      
9 A2 3107 2959 0.00      
10 A2 1262 1201 0.00      
11 A2 1183 1127 0.00      
12 A2 864 823 0.00      
13 B1 3166 3015 37.71      
14 B1 3106 2958 78.61      
15 B1 1225 1166 1.57      
16 B1 1171 1115 1.96      
17 B1 788 751 0.09      
18 B1 54i 52i 3.52      
19 B2 3059 2913 134.88      
20 B2 1571 1496 4.55      
21 B2 1338 1274 0.39      
22 B2 1298 1236 9.29      
23 B2 1072 1021 92.11      
24 B2 978 931 5.71      

Unscaled Zero Point Vibrational Energy (zpe) 19363.7 cm-1
Scaled (by 0.9523) Zero Point Vibrational Energy (zpe) 18440.0 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 QCISD/6-31G*
ABC
0.40174 0.39136 0.22365

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 1.074
C2 0.000 0.000 -1.075
C3 0.000 1.038 0.063
C4 0.000 -1.038 0.063
H5 0.892 0.000 -1.710
H6 -0.892 0.000 -1.710
H7 0.895 1.672 0.132
H8 -0.895 1.672 0.132
H9 -0.895 -1.672 0.132
H10 0.895 -1.672 0.132

Atom - Atom Distances (Å)
  O1 C2 C3 C4 H5 H6 H7 H8 H9 H10
O12.14951.44961.44962.92322.92322.11752.11752.11752.1175
C22.14951.54021.54021.09451.09452.24762.24762.24762.2476
C31.44961.54022.07622.23912.23911.09851.09852.85462.8546
C41.44961.54022.07622.23912.23912.85462.85461.09851.0985
H52.92321.09452.23912.23911.78382.48693.06213.06212.4869
H62.92321.09452.23912.23911.78383.06212.48692.48693.0621
H72.11752.24761.09852.85462.48693.06211.78933.79223.3436
H82.11752.24761.09852.85463.06212.48691.78933.34363.7922
H92.11752.24762.85461.09853.06212.48693.79223.34361.7893
H102.11752.24762.85461.09852.48693.06213.34363.79221.7893

picture of Oxetane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C3 C2 91.883 O1 C3 H7 111.669
O1 C3 H8 111.669 O1 C4 C2 91.883
O1 C4 H9 111.669 O1 C4 H10 111.669
C2 C3 H7 115.801 C2 C3 H8 115.801
C2 C4 H9 115.801 C2 C4 H10 115.801
C3 O1 C4 91.476 C3 C2 C4 84.757
C3 C2 H5 115.351 C3 C2 H6 115.351
C4 C2 H5 115.351 C4 C2 H6 115.351
H5 C2 H6 109.155 H7 C3 H8 109.061
H9 C4 H10 109.061
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS)

Jump to S1C1
Energy calculated at QCISD/6-31G*
 hartrees
Energy at 0K-192.510362
Energy at 298.15K-192.517639
HF Energy-191.907160
Nuclear repulsion energy127.912794
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' 3166 3015 37.94      
2 A' 3114 2965 40.34      
3 A' 3107 2959 46.81      
4 A' 3064 2917 17.86      
5 A' 1599 1523 0.05      
6 A' 1543 1470 2.06      
7 A' 1413 1346 4.10      
8 A' 1228 1169 1.37      
9 A' 1176 1120 2.47      
10 A' 1077 1026 5.43      
11 A' 955 909 27.20      
12 A' 856 815 5.79      
13 A' 756 720 0.64      
14 A' 76 72 3.82      
15 A" 3111 2962 11.94      
16 A" 3055 2910 119.50      
17 A" 1570 1495 4.30      
18 A" 1339 1275 0.23      
19 A" 1300 1238 8.67      
20 A" 1256 1197 0.84      
21 A" 1181 1124 0.32      
22 A" 1067 1016 89.53      
23 A" 978 931 4.31      
24 A" 863 822 0.69      

Unscaled Zero Point Vibrational Energy (zpe) 19423.8 cm-1
Scaled (by 0.9523) Zero Point Vibrational Energy (zpe) 18497.3 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
0.40201 0.39142 0.22470

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 0.145 -1.063 0.000
C2 -0.039 1.074 0.000
C3 -0.039 -0.066 1.036
C4 -0.039 -0.066 -1.036
H5 0.874 1.677 0.000
H6 -0.911 1.736 0.000
H7 0.782 -0.077 1.763
H8 -0.992 -0.205 1.566
H9 0.782 -0.077 -1.763
H10 -0.992 -0.205 -1.566

Atom - Atom Distances (Å)
  O1 C2 C3 C4 H5 H6 H7 H8 H9 H10
O12.14501.44981.44982.83592.99182.11832.11742.11832.1174
C22.14501.53961.53961.09461.09452.26012.23482.26012.2348
C31.44981.53962.07112.22362.25331.09751.09962.91692.7739
C41.44981.53962.07112.22362.25332.91692.77391.09751.0996
H52.83591.09462.22362.22361.78552.48913.07842.48913.0784
H62.99181.09452.25332.25331.78553.04342.49473.04342.4947
H72.11832.26011.09752.91692.48913.04341.79033.52643.7746
H82.11742.23481.09962.77393.07842.49471.79033.77463.1314
H92.11832.26012.91691.09752.48913.04343.52643.77461.7903
H102.11742.23482.77391.09963.07842.49473.77463.13141.7903

picture of Oxetane state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C3 C2 91.651 O1 C3 H7 111.783
O1 C3 H8 111.575 O1 C4 C2 91.651
O1 C4 H9 111.783 O1 C4 H10 111.575
C2 C3 H7 116.978 C2 C3 H8 114.700
C2 C4 H9 116.978 C2 C4 H10 114.700
C3 O1 C4 91.169 C3 C2 C4 84.537
C3 C2 H5 114.088 C3 C2 H6 116.595
C4 C2 H5 114.088 C4 C2 H6 116.595
H5 C2 H6 109.301 H7 C3 H8 109.145
H9 C4 H10 109.145
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability