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 (trioxolane124)

using model chemistry: CISD/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at CISD/3-21G
 hartrees
Energy at 0K-301.342973
Energy at 298.15K-301.349692
HF Energy-300.853918
Nuclear repulsion energy191.032393
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 CISD/3-21G
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 3256 3065 1.02      
2 A 3186 2999 0.35      
3 A 1649 1553 0.05      
4 A 1473 1387 4.31      
5 A 1261 1187 0.14      
6 A 1174 1106 2.96      
7 A 1065 1002 16.61      
8 A 981 923 7.29      
9 A 914 860 42.92      
10 A 742 699 0.37      
11 A 346 325 6.98      
12 B 3259 3068 51.09      
13 B 3180 2994 78.80      
14 B 1631 1535 9.21      
15 B 1410 1327 2.62      
16 B 1242 1169 1.58      
17 B 1164 1096 17.13      
18 B 1093 1028 166.70      
19 B 917 863 3.55      
20 B 688 648 5.64      
21 B 178 168 26.65      

Unscaled Zero Point Vibrational Energy (zpe) 15404.4 cm-1
Scaled (by 0.9413) Zero Point Vibrational Energy (zpe) 14500.2 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 CISD/3-21G
ABC
0.25954 0.25692 0.14476

See section I.F.4 to change rotational constant units
Geometric Data calculated at CISD/3-21G

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.219
C2 0.000 1.156 0.335
C3 0.000 -1.156 0.335
O4 -0.401 -0.640 -0.976
O5 0.401 0.640 -0.976
H6 -0.993 1.590 0.286
H7 0.993 -1.590 0.286
H8 0.760 1.867 0.639
H9 -0.760 -1.867 0.639

Atom - Atom Distances (Å)
  O1 C2 C3 O4 O5 H6 H7 H8 H9
O11.45521.45522.32132.32132.09442.09442.09712.0971
C21.45522.31292.26021.46561.08522.92141.08403.1320
C31.45522.31291.46562.26022.92141.08523.13201.0840
O42.32132.26021.46561.51032.63052.10733.20042.0603
O52.32131.46562.26021.51032.10732.63052.06033.2004
H62.09441.08522.92142.63052.10733.75041.81033.4829
H72.09442.92141.08522.10732.63053.75043.48291.8103
H82.09711.08403.13203.20042.06031.81033.48294.0310
H92.09713.13201.08402.06033.20043.48291.81034.0310

picture of trioxolane124 state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 O4 73.778 O1 C2 H6 110.212
O1 C2 H8 110.504 O1 C3 O5 73.778
O1 C3 H7 110.212 O1 C3 H9 110.504
C2 O1 C3 105.252 C2 O4 O5 39.848
C3 O5 O4 39.848 O4 C2 H6 97.418
O4 C2 H8 143.897 O5 C3 H7 97.418
O5 C3 H9 143.897 H6 C2 H8 113.136
H7 C3 H9 113.136
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability