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

using model chemistry: BLYP/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at BLYP/STO-3G
 hartrees
Energy at 0K-225.893060
Energy at 298.15K-225.898261
Nuclear repulsion energy123.647864
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 BLYP/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 Ag 3062 2833 0.00      
2 Ag 1634 1512 0.00      
3 Ag 1068 988 0.00      
4 Ag 824 762 0.00      
5 Au 1070 990 0.00      
6 B1g 1286 1190 0.00      
7 B1g 1084 1003 0.00      
8 B1u 3146 2911 66.78      
9 B1u 1075 995 10.90      
10 B1u 57 53 9.86      
11 B2g 3142 2907 0.00      
12 B2g 1032 955 0.00      
13 B2u 1419 1312 0.16      
14 B2u 919 850 3.82      
15 B3g 967 895 0.00      
16 B3u 3044 2817 66.02      
17 B3u 1601 1482 22.54      
18 B3u 1048 970 55.58      

Unscaled Zero Point Vibrational Energy (zpe) 13739.2 cm-1
Scaled (by 0.9252) Zero Point Vibrational Energy (zpe) 12711.5 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 BLYP/STO-3G
ABC
0.41426 0.39662 0.22080

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

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.035 0.000 0.000
C2 1.035 0.000 0.000
O3 0.000 1.105 0.000
O4 0.000 -1.105 0.000
H5 -1.693 0.000 0.922
H6 1.693 0.000 0.922
H7 -1.693 0.000 -0.922
H8 1.693 0.000 -0.922

Atom - Atom Distances (Å)
  C1 C2 O3 O4 H5 H6 H7 H8
C12.07021.51431.51431.13252.87961.13252.8796
C22.07021.51431.51432.87961.13252.87961.1325
O31.51431.51432.21052.22212.22212.22212.2221
O41.51431.51432.21052.22212.22212.22212.2221
H51.13252.87962.22212.22213.38611.84353.8554
H62.87961.13252.22212.22213.38613.85541.8435
H71.13252.87962.22212.22211.84353.85543.3861
H82.87961.13252.22212.22213.85541.84353.3861

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 86.244 C1 O4 C2 86.244
O3 C1 O4 93.756 O3 C1 H5 113.400
O3 C1 H7 113.400 O3 C2 O4 93.756
O3 C2 H6 113.400 O3 C2 H8 113.400
O4 C1 H5 113.400 O4 C1 H7 113.400
O4 C2 H6 113.400 O4 C2 H8 113.400
H5 C1 H7 108.958 H6 C2 H8 108.958
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.018      
2 C 0.018      
3 O -0.166      
4 O -0.166      
5 H 0.074      
6 H 0.074      
7 H 0.074      
8 H 0.074      


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 -18.318 0.000 0.000
y 0.000 -25.217 0.000
z 0.000 0.000 -21.146
Traceless
 xyz
x 4.863 0.000 0.000
y 0.000 -5.484 0.000
z 0.000 0.000 0.621
Polar
3z2-r21.242
x2-y26.899
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.655 0.000 0.000
y 0.000 1.714 0.000
z 0.000 0.000 1.801


<r2> (average value of r2) Å2
<r2> 60.732
(<r2>)1/2 7.793