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: MP2=FULL/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2=FULL/STO-3G
 hartrees
Energy at 0K-298.837523
Energy at 298.15K-298.844069
HF Energy-298.598244
Nuclear repulsion energy188.869729
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 MP2=FULL/STO-3G
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' 3511 3121 4.12      
2 A' 3382 3006 3.98      
3 A' 1699 1511 0.32      
4 A' 1436 1277 0.23      
5 A' 1289 1145 4.21      
6 A' 1177 1047 4.14      
7 A' 1079 959 0.02      
8 A' 1045 929 0.70      
9 A' 914 813 0.37      
10 A' 732 651 2.18      
11 A' 388 345 3.06      
12 A" 3505 3116 0.62      
13 A" 3378 3002 2.74      
14 A" 1686 1499 0.99      
15 A" 1465 1302 1.10      
16 A" 1343 1193 0.05      
17 A" 1222 1086 1.46      
18 A" 1176 1045 10.29      
19 A" 1051 934 1.17      
20 A" 762 677 2.11      
21 A" 167 149 1.79      

Unscaled Zero Point Vibrational Energy (zpe) 16202.5 cm-1
Scaled (by 0.8889) Zero Point Vibrational Energy (zpe) 14402.4 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 MP2=FULL/STO-3G
ABC
0.25909 0.24425 0.14092

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -0.548 -1.092 0.000
O2 0.136 -0.506 1.133
O3 0.136 -0.506 -1.133
C4 0.136 0.930 0.794
C5 0.136 0.930 -0.794
H6 1.051 1.383 1.230
H7 1.051 1.383 -1.230
H8 -0.763 1.456 1.191
H9 -0.763 1.456 -1.191

Atom - Atom Distances (Å)
  O1 O2 O3 C4 C5 H6 H7 H8 H9
O11.44691.44692.27692.27693.19203.19202.82002.8200
O21.44692.26581.47562.40322.10103.16032.15893.1711
O31.44692.26582.40321.47563.16032.10103.17112.1589
C42.27691.47562.40321.58801.10972.26661.11422.2411
C52.27692.40321.47561.58802.26661.10972.24111.1142
H63.19202.10103.16031.10972.26662.45981.81523.0252
H73.19203.16032.10102.26661.10972.45983.02521.8152
H82.82002.15893.17111.11422.24111.81523.02522.3810
H92.82003.17112.15892.24111.11423.02521.81522.3810

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 102.349 O1 O3 C5 102.349
O2 O1 O3 103.072 O2 C4 C5 103.277
O2 C4 H6 107.875 O2 C4 H8 112.187
O3 C5 C4 103.277 O3 C5 H7 107.875
O3 C5 H9 112.187 C4 C5 H7 113.127
C4 C5 H9 110.847 C5 C4 H6 113.127
C5 C4 H8 110.847 H6 C4 H8 109.413
H7 C5 H9 109.413
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability