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 C2H4O3 (1,2,3-trioxolane)

using model chemistry: QCISD/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at QCISD/6-31G
 hartrees
Energy at 0K-302.895840
Energy at 298.15K-302.901957
HF Energy-302.278594
Nuclear repulsion energy184.337377
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' 3142 3027 28.25      
2 A' 3070 2958 20.84      
3 A' 1554 1497 0.28      
4 A' 1346 1297 0.03      
5 A' 1211 1167 1.12      
6 A' 969 934 2.34      
7 A' 875 844 0.39      
8 A' 863 832 19.92      
9 A' 749 722 1.14      
10 A' 616 593 1.35      
11 A' 345 332 5.07      
12 A" 3122 3008 0.21      
13 A" 3060 2949 19.76      
14 A" 1541 1485 0.63      
15 A" 1357 1308 9.86      
16 A" 1243 1198 0.58      
17 A" 1125 1084 0.11      
18 A" 924 890 6.86      
19 A" 687 662 16.41      
20 A" 615 593 7.37      
21 A" 52 50 3.69      

Unscaled Zero Point Vibrational Energy (zpe) 14232.8 cm-1
Scaled (by 0.9636) Zero Point Vibrational Energy (zpe) 13714.8 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
0.24833 0.23111 0.13422

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 -0.550 -1.117 0.000
O2 0.137 -0.490 1.139
O3 0.137 -0.490 -1.139
C4 0.137 0.931 0.789
C5 0.137 0.931 -0.789
H6 1.039 1.367 1.230
H7 1.039 1.367 -1.230
H8 -0.756 1.432 1.185
H9 -0.756 1.432 -1.185

Atom - Atom Distances (Å)
  O1 O2 O3 C4 C5 H6 H7 H8 H9
O11.47081.47082.30002.30003.19523.19522.81902.8190
O21.47082.27901.46372.39592.06673.14302.12023.1461
O31.47082.27902.39591.46373.14302.06673.14612.1202
C42.30001.46372.39591.57861.09442.25441.09802.2244
C52.30002.39591.46371.57862.25441.09442.22441.0980
H63.19522.06673.14301.09442.25442.46051.79663.0101
H73.19523.14302.06672.25441.09442.46053.01011.7966
H82.81902.12023.14611.09802.22441.79663.01012.3706
H92.81903.14612.12022.22441.09803.01011.79662.3706

picture of 1,2,3-trioxolane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 O2 C4 103.214 O1 O3 C5 103.214
O2 O1 O3 101.560 O2 C4 C5 103.841
O2 C4 H6 106.892 O2 C4 H8 110.908
O3 C5 C4 103.841 O3 C5 H7 106.892
O3 C5 H9 110.908 C4 C5 H7 113.759
C4 C5 H9 111.139 C5 C4 H6 113.759
C5 C4 H8 111.139 H6 C4 H8 110.061
H7 C5 H9 110.061
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability