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/6-311G**

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/6-311G**
 hartrees
Energy at 0K-303.425433
Energy at 298.15K-303.432079
HF Energy-302.504327
Nuclear repulsion energy193.767061
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/6-311G**
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' 3172 3026 31.34      
2 A' 3094 2952 46.33      
3 A' 1544 1473 0.15      
4 A' 1379 1316 0.41      
5 A' 1272 1213 2.39      
6 A' 1049 1001 34.52      
7 A' 965 920 10.76      
8 A' 923 881 3.81      
9 A' 873 833 1.30      
10 A' 725 692 2.17      
11 A' 426 407 4.19      
12 A" 3155 3010 0.61      
13 A" 3083 2941 25.75      
14 A" 1528 1458 0.19      
15 A" 1376 1313 1.47      
16 A" 1246 1188 0.04      
17 A" 1177 1123 0.01      
18 A" 1062 1013 2.69      
19 A" 786 750 36.35      
20 A" 743 709 0.41      
21 A" 132 126 3.97      

Unscaled Zero Point Vibrational Energy (zpe) 14854.6 cm-1
Scaled (by 0.9541) Zero Point Vibrational Energy (zpe) 14172.8 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/6-311G**
ABC
0.27592 0.25429 0.14875

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -0.562 -1.036 0.000
O2 0.140 -0.492 1.098
O3 0.140 -0.492 -1.098
C4 0.140 0.894 0.778
C5 0.140 0.894 -0.778
H6 1.046 1.320 1.213
H7 1.046 1.320 -1.213
H8 -0.750 1.395 1.176
H9 -0.750 1.395 -1.176

Atom - Atom Distances (Å)
  O1 O2 O3 C4 C5 H6 H7 H8 H9
O11.41181.41182.19562.19563.09933.09932.70672.7067
O21.41182.19541.42232.33212.02903.07312.08793.0857
O31.41182.19542.33211.42233.07312.02903.08572.0879
C42.19561.42232.33211.55591.09192.22891.09592.2045
C52.19562.33211.42231.55592.22891.09192.20451.0959
H63.09932.02903.07311.09192.22892.42651.79812.9898
H73.09933.07312.02902.22891.09192.42652.98981.7981
H82.70672.08793.08571.09592.20451.79812.98982.3514
H92.70673.08572.08792.20451.09592.98981.79812.3514

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 101.559 O1 O3 C5 101.559
O2 O1 O3 102.063 O2 C4 C5 102.990
O2 C4 H6 106.874 O2 C4 H8 111.359
O3 C5 C4 102.990 O3 C5 H7 106.874
O3 C5 H9 111.359 C4 C5 H7 113.492
C4 C5 H9 111.279 C5 C4 H6 113.492
C5 C4 H8 111.279 H6 C4 H8 110.541
H7 C5 H9 110.541
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability