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: B1B95/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at B1B95/3-21G
 hartrees
Energy at 0K-302.388121
Energy at 298.15K-302.394759
HF Energy-302.388121
Nuclear repulsion energy191.767390
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 B1B95/3-21G
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 3188 3050 0.51      
2 A 3111 2977 0.05      
3 A 1580 1511 0.02      
4 A 1411 1350 0.82      
5 A 1215 1162 0.21      
6 A 1120 1072 0.29      
7 A 1014 970 7.71      
8 A 951 910 11.88      
9 A 894 855 45.21      
10 A 718 687 0.51      
11 A 360 345 7.17      
12 B 3191 3053 46.87      
13 B 3106 2972 86.26      
14 B 1560 1492 3.35      
15 B 1353 1294 4.10      
16 B 1194 1142 1.80      
17 B 1108 1060 9.09      
18 B 1046 1000 156.78      
19 B 875 837 0.89      
20 B 661 632 4.62      
21 B 173 165 22.80      

Unscaled Zero Point Vibrational Energy (zpe) 14912.9 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 14267.2 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 B1B95/3-21G
ABC
0.26078 0.25919 0.14708

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/3-21G

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.219
C2 0.000 1.146 0.327
C3 0.000 -1.146 0.327
O4 -0.424 -0.628 -0.967
O5 0.424 0.628 -0.967
H6 -0.999 1.574 0.262
H7 0.999 -1.574 0.262
H8 0.754 1.866 0.635
H9 -0.754 -1.866 0.635

Atom - Atom Distances (Å)
  O1 C2 C3 O4 O5 H6 H7 H8 H9
O11.45191.45192.31282.31282.09522.09522.09582.0958
C21.45192.29142.23571.45631.08902.89781.08743.1200
C31.45192.29141.45632.23572.89781.08903.12001.0874
O42.31282.23571.45631.51552.58582.10463.18932.0507
O52.31281.45632.23571.51552.10462.58582.05073.1893
H62.09521.08902.89782.58582.10463.72801.81643.4683
H72.09522.89781.08902.10462.58583.72803.46831.8164
H82.09581.08743.12003.18932.05071.81643.46834.0254
H92.09583.12001.08742.05073.18933.46831.81644.0254

picture of trioxolane124 state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 O4 74.294 O1 C2 H6 110.281
O1 C2 H8 110.424 O1 C3 O5 74.294
O1 C3 H7 110.281 O1 C3 H9 110.424
C2 O1 C3 104.208 C2 O4 O5 40.219
C3 O5 O4 40.219 O4 C2 H6 95.919
O4 C2 H8 145.164 O5 C3 H7 95.919
O5 C3 H9 145.164 H6 C2 H8 113.148
H7 C3 H9 113.148
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.506      
2 C 0.047      
3 C 0.047      
4 O -0.280      
5 O -0.280      
6 H 0.237      
7 H 0.237      
8 H 0.249      
9 H 0.249      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 1.133 1.133
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.037 -0.075 0.000
y -0.075 -22.043 0.000
z 0.000 0.000 -34.381
Traceless
 xyz
x 0.175 -0.075 0.000
y -0.075 9.166 0.000
z 0.000 0.000 -9.340
Polar
3z2-r2-18.681
x2-y2-5.994
xy-0.075
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.437 0.397 0.000
y 0.397 5.562 0.000
z 0.000 0.000 3.379


<r2> (average value of r2) Å2
<r2> 86.624
(<r2>)1/2 9.307