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: 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-192.247070
Energy at 298.15K 
HF Energy-191.812166
Nuclear repulsion energy124.747832
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 3061 2950 11.27      
2 A1 3047 2936 16.04      
3 A1 1583 1526 0.14      
4 A1 1543 1487 2.17      
5 A1 1364 1314 0.29      
6 A1 1003 967 0.00      
7 A1 836 806 9.73      
8 A1 781 752 11.34      
9 A2 3098 2985 0.00      
10 A2 1259 1213 0.00      
11 A2 1120 1079 0.00      
12 A2 874 842 0.00      
13 B1 3119 3006 84.12      
14 B1 3090 2977 20.89      
15 B1 1214 1170 2.43      
16 B1 1105 1065 1.05      
17 B1 790 761 0.42      
18 B1 43i 41i 5.78      
19 B2 3043 2932 96.56      
20 B2 1561 1504 1.20      
21 B2 1306 1259 13.76      
22 B2 1301 1254 0.00      
23 B2 961 926 12.01      
24 B2 903 870 47.59      

Unscaled Zero Point Vibrational Energy (zpe) 18959.9 cm-1
Scaled (by 0.9636) Zero Point Vibrational Energy (zpe) 18269.7 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
0.37813 0.37658 0.21184

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 1.114
C2 0.000 0.000 -1.084
C3 0.000 1.079 0.047
C4 0.000 -1.079 0.047
H5 0.894 0.000 -1.723
H6 -0.894 0.000 -1.723
H7 0.901 1.706 0.117
H8 -0.901 1.706 0.117
H9 -0.901 -1.706 0.117
H10 0.901 -1.706 0.117

Atom - Atom Distances (Å)
  O1 C2 C3 C4 H5 H6 H7 H8 H9 H10
O12.19741.51741.51742.97482.97482.17142.17142.17142.1714
C22.19741.56351.56351.09971.09972.27232.27232.27232.2723
C31.51741.56352.15892.25852.25851.09951.09952.92822.9282
C41.51741.56352.15892.25852.25852.92822.92821.09951.0995
H52.97481.09972.25852.25851.78882.50943.08563.08562.5094
H62.97481.09972.25852.25851.78883.08562.50942.50943.0856
H72.17142.27231.09952.92822.50943.08561.80203.85833.4116
H82.17142.27231.09952.92823.08562.50941.80203.41163.8583
H92.17142.27232.92821.09953.08562.50943.85833.41161.8020
H102.17142.27232.92821.09952.50943.08563.41163.85831.8020

picture of Oxetane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C3 C2 90.988 O1 C3 H7 111.141
O1 C3 H8 111.141 O1 C4 C2 90.988
O1 C4 H9 111.141 O1 C4 H10 111.141
C2 C3 H7 116.052 C2 C3 H8 116.052
C2 C4 H9 116.052 C2 C4 H10 116.052
C3 O1 C4 90.695 C3 C2 C4 87.329
C3 C2 H5 114.889 C3 C2 H6 114.889
C4 C2 H5 114.889 C4 C2 H6 114.889
H5 C2 H6 108.847 H7 C3 H8 110.057
H9 C4 H10 110.057
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS)

Jump to S1C1
Energy calculated at QCISD/6-31G
 hartrees
Energy at 0K-192.247081
Energy at 298.15K-192.254230
HF Energy-191.811994
Nuclear repulsion energy124.795548
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' 3120 3006 84.14      
2 A' 3092 2979 14.99      
3 A' 3060 2948 14.64      
4 A' 3046 2935 19.16      
5 A' 1583 1525 0.19      
6 A' 1543 1487 2.15      
7 A' 1363 1314 0.29      
8 A' 1216 1172 2.43      
9 A' 1109 1069 1.15      
10 A' 1004 967 0.12      
11 A' 849 818 3.42      
12 A' 805 776 15.44      
13 A' 751 724 3.24      
14 A' 59 57 6.02      
15 A" 3100 2987 4.29      
16 A" 3041 2931 90.48      
17 A" 1561 1504 1.14      
18 A" 1308 1261 10.47      
19 A" 1304 1257 2.97      
20 A" 1254 1209 0.10      
21 A" 1118 1078 0.12      
22 A" 959 924 9.65      
23 A" 907 874 42.40      
24 A" 869 837 6.16      

Unscaled Zero Point Vibrational Energy (zpe) 19010.6 cm-1
Scaled (by 0.9636) Zero Point Vibrational Energy (zpe) 18318.6 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
0.37828 0.37660 0.21246

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 0.122 -1.107 0.000
C2 -0.034 1.082 0.000
C3 -0.034 -0.049 1.078
C4 -0.034 -0.049 -1.078
H5 0.878 1.698 0.000
H6 -0.911 1.745 0.000
H7 0.812 -0.069 1.780
H8 -0.981 -0.177 1.623
H9 0.812 -0.069 -1.780
H10 -0.981 -0.177 -1.623

Atom - Atom Distances (Å)
  O1 C2 C3 C4 H5 H6 H7 H8 H9 H10
O12.19451.51781.51782.90463.03322.17242.17102.17242.1710
C22.19451.56291.56291.09981.09962.28202.26232.28202.2623
C31.51781.56292.15572.24622.26981.09881.10032.97992.8649
C41.51781.56292.15572.24622.26982.97992.86491.09881.1003
H52.90461.09982.24622.24621.78942.50873.09922.50873.0992
H63.03321.09962.26982.26981.78943.07022.51703.07022.5170
H72.17242.28201.09882.97992.50873.07021.80263.55923.8473
H82.17102.26231.10032.86493.09922.51701.80263.84733.2458
H92.17242.28202.97991.09882.50873.07023.55923.84731.8026
H102.17102.26232.86491.10033.09922.51703.84733.24581.8026

picture of Oxetane state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C3 C2 90.842 O1 C3 H7 111.238
O1 C3 H8 111.033 O1 C4 C2 90.842
O1 C4 H9 111.238 O1 C4 H10 111.033
C2 C3 H7 116.967 C2 C3 H8 115.206
C2 C4 H9 116.967 C2 C4 H10 115.206
C3 O1 C4 90.489 C3 C2 C4 87.205
C3 C2 H5 113.905 C3 C2 H6 115.884
C4 C2 H5 113.905 C4 C2 H6 115.884
H5 C2 H6 108.898 H7 C3 H8 110.105
H9 C4 H10 110.105
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability