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All results from a given calculation for C2H4O2 (1,3-dioxetane)

using model chemistry: HF/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at HF/6-31G*
 hartrees
Energy at 0K-227.731115
Energy at 298.15K-227.737022
Nuclear repulsion energy132.762212
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 HF/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Ag 3244 2915 0.00      
2 Ag 1748 1571 0.00      
3 Ag 1240 1114 0.00      
4 Ag 988 887 0.00      
5 Au 1246 1120 0.00      
6 B1g 1483 1332 0.00      
7 B1g 1117 1004 0.00      
8 B1u 3293 2959 174.22      
9 B1u 1303 1171 35.29      
10 B1u 213 191 20.61      
11 B2g 3286 2953 0.00      
12 B2g 1236 1111 0.00      
13 B2u 1609 1446 51.00      
14 B2u 1082 972 137.76      
15 B3g 1217 1094 0.00      
16 B3u 3228 2901 203.35      
17 B3u 1709 1536 33.78      
18 B3u 1219 1095 319.05      

Unscaled Zero Point Vibrational Energy (zpe) 15230.9 cm-1
Scaled (by 0.8985) Zero Point Vibrational Energy (zpe) 13685.0 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 HF/6-31G*
ABC
0.46893 0.46655 0.25671

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-31G*

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.971 0.000 0.000
C2 0.971 0.000 0.000
O3 0.000 1.015 0.000
O4 0.000 -1.015 0.000
H5 -1.586 0.000 0.892
H6 1.586 0.000 0.892
H7 -1.586 0.000 -0.892
H8 1.586 0.000 -0.892

Atom - Atom Distances (Å)
  C1 C2 O3 O4 H5 H6 H7 H8
C11.94111.40401.40401.08352.70731.08352.7073
C21.94111.40401.40402.70731.08352.70731.0835
O31.40401.40402.02902.08302.08302.08302.0830
O41.40401.40402.02902.08302.08302.08302.0830
H51.08352.70732.08302.08303.17121.78393.6385
H62.70731.08352.08302.08303.17123.63851.7839
H71.08352.70732.08302.08301.78393.63853.1712
H82.70731.08352.08302.08303.63851.78393.1712

picture of 1,3-dioxetane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O3 C2 87.462 C1 O4 C2 87.462
O3 C1 O4 92.538 O3 C1 H5 113.106
O3 C1 H7 113.106 O3 C2 O4 92.538
O3 C2 H6 113.106 O3 C2 H8 113.106
O4 C1 H5 113.106 O4 C1 H7 113.106
O4 C2 H6 113.106 O4 C2 H8 113.106
H5 C1 H7 110.821 H6 C2 H8 110.821
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.300      
2 C 0.300      
3 O -0.626      
4 O -0.626      
5 H 0.163      
6 H 0.163      
7 H 0.163      
8 H 0.163      


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 0.000 0.000
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.233 0.000 0.000
y 0.000 -29.059 0.000
z 0.000 0.000 -22.757
Traceless
 xyz
x 7.675 0.000 0.000
y 0.000 -8.564 0.000
z 0.000 0.000 0.889
Polar
3z2-r21.778
x2-y210.827
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.600 0.000 0.000
y 0.000 2.723 0.000
z 0.000 0.000 3.386


<r2> (average value of r2) Å2
<r2> 55.594
(<r2>)1/2 7.456