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

using model chemistry: B1B95/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at B1B95/6-31G**
 hartrees
Energy at 0K-228.921159
Energy at 298.15K-228.926869
Nuclear repulsion energy131.514715
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 B1B95/6-31G**
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 3033 2896 0.00      
2 Ag 1603 1531 0.00      
3 Ag 1161 1109 0.00      
4 Ag 892 851 0.00      
5 Au 1138 1086 0.00      
6 B1g 1353 1292 0.00      
7 B1g 1061 1013 0.00      
8 B1u 3073 2934 162.98      
9 B1u 1187 1133 18.34      
10 B1u 159 151 13.61      
11 B2g 3068 2930 0.00      
12 B2g 1140 1088 0.00      
13 B2u 1469 1402 26.87      
14 B2u 996 951 98.31      
15 B3g 1072 1024 0.00      
16 B3u 3014 2877 222.65      
17 B3u 1564 1493 24.38      
18 B3u 1131 1080 254.95      

Unscaled Zero Point Vibrational Energy (zpe) 14055.2 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 13419.9 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 B1B95/6-31G**
ABC
0.46529 0.45275 0.25194

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31G**

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.972 0.000 0.000
C2 0.972 0.000 0.000
O3 0.000 1.030 0.000
O4 0.000 -1.030 0.000
H5 -1.598 0.000 0.901
H6 1.598 0.000 0.901
H7 -1.598 0.000 -0.901
H8 1.598 0.000 -0.901

Atom - Atom Distances (Å)
  C1 C2 O3 O4 H5 H6 H7 H8
C11.94321.41621.41621.09792.72341.09792.7234
C21.94321.41621.41622.72341.09792.72341.0979
O31.41621.41622.06062.10452.10452.10452.1045
O41.41621.41622.06062.10452.10452.10452.1045
H51.09792.72342.10452.10453.19671.80293.6700
H62.72341.09792.10452.10453.19673.67001.8029
H71.09792.72342.10452.10451.80293.67003.1967
H82.72341.09792.10452.10453.67001.80293.1967

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 86.640 C1 O4 C2 86.640
O3 C1 O4 93.360 O3 C1 H5 113.057
O3 C1 H7 113.057 O3 C2 O4 93.360
O3 C2 H6 113.057 O3 C2 H8 113.057
O4 C1 H5 113.057 O4 C1 H7 113.057
O4 C2 H6 113.057 O4 C2 H8 113.057
H5 C1 H7 110.381 H6 C2 H8 110.381
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.283      
2 C 0.283      
3 O -0.519      
4 O -0.519      
5 H 0.118      
6 H 0.118      
7 H 0.118      
8 H 0.118      


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 -18.647 0.000 0.000
y 0.000 -28.191 0.000
z 0.000 0.000 -22.625
Traceless
 xyz
x 6.761 0.000 0.000
y 0.000 -7.556 0.000
z 0.000 0.000 0.794
Polar
3z2-r21.589
x2-y29.545
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.070 0.000 0.000
y 0.000 2.940 0.000
z 0.000 0.000 3.646


<r2> (average value of r2) Å2
<r2> 56.243
(<r2>)1/2 7.500