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/cc-pVTZ

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/cc-pVTZ
 hartrees
Energy at 0K-303.617998
Energy at 298.15K-303.624646
HF Energy-302.545251
Nuclear repulsion energy194.175551
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/cc-pVTZ
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' 3168 3027 25.82      
2 A' 3093 2955 46.92      
3 A' 1542 1473 0.17      
4 A' 1374 1313 0.11      
5 A' 1266 1210 2.18      
6 A' 1054 1007 34.08      
7 A' 969 926 12.30      
8 A' 944 902 4.02      
9 A' 873 834 0.76      
10 A' 723 691 1.49      
11 A' 420 402 3.88      
12 A" 3150 3010 0.70      
13 A" 3081 2944 22.17      
14 A" 1524 1456 0.55      
15 A" 1377 1316 1.80      
16 A" 1250 1195 0.01      
17 A" 1177 1125 0.07      
18 A" 1061 1014 2.91      
19 A" 814 778 34.53      
20 A" 745 712 3.65      
21 A" 124 118 3.25      

Unscaled Zero Point Vibrational Energy (zpe) 14864.7 cm-1
Scaled (by 0.9555) Zero Point Vibrational Energy (zpe) 14203.2 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/cc-pVTZ
ABC
0.27674 0.25582 0.14913

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -0.557 -1.041 0.000
O2 0.138 -0.489 1.098
O3 0.138 -0.489 -1.098
C4 0.138 0.894 0.774
C5 0.138 0.894 -0.774
H6 1.039 1.321 1.206
H7 1.039 1.321 -1.206
H8 -0.746 1.394 1.169
H9 -0.746 1.394 -1.169

Atom - Atom Distances (Å)
  O1 O2 O3 C4 C5 H6 H7 H8 H9
O11.41161.41162.19672.19673.09543.09542.70822.7082
O21.41162.19501.41992.32692.02483.06512.08193.0767
O31.41162.19502.32691.41993.06512.02483.07672.0819
C42.19671.41992.32691.54831.08652.21711.09032.1928
C52.19672.32691.41991.54832.21711.08652.19281.0903
H63.09542.02483.06511.08652.21712.41241.78682.9719
H73.09543.06512.02482.21711.08652.41242.97191.7868
H82.70822.08193.07671.09032.19281.78682.97192.3377
H92.70823.07672.08192.19281.09032.97191.78682.3377

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 101.760 O1 O3 C5 101.760
O2 O1 O3 102.067 O2 C4 C5 103.165
O2 C4 H6 107.021 O2 C4 H8 111.397
O3 C5 C4 103.165 O3 C5 H7 107.021
O3 C5 H9 111.397 C4 C5 H7 113.431
C4 C5 H9 111.224 C5 C4 H6 113.431
C5 C4 H8 111.224 H6 C4 H8 110.334
H7 C5 H9 110.334
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability