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

using model chemistry: BLYP/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 BLYP/6-31G
 hartrees
Energy at 0K-228.856194
Energy at 298.15K-228.861600
Nuclear repulsion energy125.315274
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/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 2982 2959 0.00      
2 Ag 1552 1540 0.00      
3 Ag 974 967 0.00      
4 Ag 785 779 0.00      
5 Au 1038 1030 0.00      
6 B1g 1270 1261 0.00      
7 B1g 864 858 0.00      
8 B1u 3040 3017 145.74      
9 B1u 1093 1085 10.29      
10 B1u 140 139 24.10      
11 B2g 3034 3011 0.00      
12 B2g 1056 1048 0.00      
13 B2u 1358 1348 4.74      
14 B2u 763 757 56.36      
15 B3g 942 935 0.00      
16 B3u 2966 2943 159.55      
17 B3u 1517 1506 15.17      
18 B3u 910 903 165.77      

Unscaled Zero Point Vibrational Energy (zpe) 13141.8 cm-1
Scaled (by 0.9924) Zero Point Vibrational Energy (zpe) 13042.0 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 BLYP/6-31G
ABC
0.41888 0.41289 0.22681

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

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.038 0.000 0.000
C2 1.038 0.000 0.000
O3 0.000 1.082 0.000
O4 0.000 -1.082 0.000
H5 -1.652 0.000 0.915
H6 1.652 0.000 0.915
H7 -1.652 0.000 -0.915
H8 1.652 0.000 -0.915

Atom - Atom Distances (Å)
  C1 C2 O3 O4 H5 H6 H7 H8
C12.07631.49951.49951.10182.84161.10182.8416
C22.07631.49951.49952.84161.10182.84161.1018
O31.49951.49952.16412.17662.17662.17662.1766
O41.49951.49952.16412.17662.17662.17662.1766
H51.10182.84162.17662.17663.30431.82983.7771
H62.84161.10182.17662.17663.30433.77711.8298
H71.10182.84162.17662.17661.82983.77713.3043
H82.84161.10182.17662.17663.77711.82983.3043

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 87.628 C1 O4 C2 87.628
O3 C1 O4 92.372 O3 C1 H5 112.694
O3 C1 H7 112.694 O3 C2 O4 92.372
O3 C2 H6 112.694 O3 C2 H8 112.694
O4 C1 H5 112.694 O4 C1 H7 112.694
O4 C2 H6 112.694 O4 C2 H8 112.694
H5 C1 H7 112.266 H6 C2 H8 112.266
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.175      
2 C 0.175      
3 O -0.471      
4 O -0.471      
5 H 0.148      
6 H 0.148      
7 H 0.148      
8 H 0.148      


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 -18.161 0.000 0.000
y 0.000 -29.958 0.000
z 0.000 0.000 -22.985
Traceless
 xyz
x 8.310 0.000 0.000
y 0.000 -9.385 0.000
z 0.000 0.000 1.075
Polar
3z2-r22.150
x2-y211.796
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.535 0.000 0.000
y 0.000 3.102 0.000
z 0.000 0.000 3.450


<r2> (average value of r2) Å2
<r2> 60.737
(<r2>)1/2 7.793