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: MP4=FULL/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP4=FULL/3-21G
 hartrees
Energy at 0K-301.394105
Energy at 298.15K 
HF Energy-300.765522
Nuclear repulsion energy183.980980
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 MP4=FULL/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' 3139 3073        
2 A' 3069 3004        
3 A' 1575 1542        
4 A' 1331 1302        
5 A' 1210 1185        
6 A' 915 895        
7 A' 874 856        
8 A' 863 844        
9 A' 818 801        
10 A' 606 593        
11 A' 335 328        
12 A" 3117 3051        
13 A" 3058 2993        
14 A" 1559 1525        
15 A" 1354 1325        
16 A" 1253 1226        
17 A" 1112 1089        
18 A" 927 908        
19 A" 738 722        
20 A" 669 654        
21 A" 32i 31i        

Unscaled Zero Point Vibrational Energy (zpe) 14243.7 cm-1
Scaled (by 0.9788) Zero Point Vibrational Energy (zpe) 13941.8 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 MP4=FULL/3-21G
ABC
0.24806 0.22895 0.13440

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -0.657 -1.097 0.000
O2 0.163 -0.507 1.184
O3 0.163 -0.507 -1.184
C4 0.163 0.939 0.788
C5 0.163 0.939 -0.788
H6 1.078 1.362 1.215
H7 1.078 1.362 -1.215
H8 -0.727 1.449 1.175
H9 -0.727 1.449 -1.175

Atom - Atom Distances (Å)
  O1 O2 O3 C4 C5 H6 H7 H8 H9
O11.55671.55672.33192.33193.24583.24582.80532.8053
O21.55672.36891.49842.44542.08123.17602.14863.1909
O31.55672.36892.44541.49843.17602.08123.19092.1486
C42.33191.49842.44541.57671.09542.24291.09632.2150
C52.33192.44541.49841.57672.24291.09542.21501.0963
H63.24582.08123.17601.09542.24292.42981.80802.9963
H73.24583.17602.08122.24291.09542.42982.99631.8080
H82.80532.14863.19091.09632.21501.80802.99632.3495
H92.80533.19092.14862.21501.09632.99631.80802.3495

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 99.493 O1 O3 C5 99.493
O2 O1 O3 99.084 O2 C4 C5 105.328
O2 C4 H6 105.664 O2 C4 H8 110.853
O3 C5 C4 105.328 O3 C5 H7 105.664
O3 C5 H9 110.853 C4 C5 H7 112.919
C4 C5 H9 110.640 C5 C4 H6 112.919
C5 C4 H8 110.640 H6 C4 H8 111.172
H7 C5 H9 111.172
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability