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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-228.936813
Energy at 298.15K-228.942397
HF Energy-228.936813
Nuclear repulsion energy128.991120
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 2913 2890 0.00      
2 Ag 1568 1555 0.00      
3 Ag 1063 1055 0.00      
4 Ag 848 841 0.00      
5 Au 1081 1072 0.00      
6 B1g 1300 1289 0.00      
7 B1g 950 942 0.00      
8 B1u 2937 2913 201.72      
9 B1u 1138 1129 13.48      
10 B1u 161 160 11.64      
11 B2g 2933 2910 0.00      
12 B2g 1102 1093 0.00      
13 B2u 1412 1401 24.02      
14 B2u 888 880 84.50      
15 B3g 995 986 0.00      
16 B3u 2892 2869 249.85      
17 B3u 1527 1514 32.30      
18 B3u 1024 1015 223.56      

Unscaled Zero Point Vibrational Energy (zpe) 13365.1 cm-1
Scaled (by 0.9919) Zero Point Vibrational Energy (zpe) 13256.8 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
0.44867 0.43426 0.24190

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 -0.984 0.000 0.000
C2 0.984 0.000 0.000
O3 0.000 1.050 0.000
O4 0.000 -1.050 0.000
H5 -1.621 0.000 0.909
H6 1.621 0.000 0.909
H7 -1.621 0.000 -0.909
H8 1.621 0.000 -0.909

Atom - Atom Distances (Å)
  C1 C2 O3 O4 H5 H6 H7 H8
C11.96701.43851.43851.11002.75831.11002.7583
C21.96701.43851.43852.75831.11002.75831.1100
O31.43851.43852.09962.13422.13422.13422.1342
O41.43851.43852.09962.13422.13422.13422.1342
H51.11002.75832.13422.13423.24151.81773.7164
H62.75831.11002.13422.13423.24153.71641.8177
H71.11002.75832.13422.13421.81773.71643.2415
H82.75831.11002.13422.13423.71641.81773.2415

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 86.267 C1 O4 C2 86.267
O3 C1 O4 93.733 O3 C1 H5 113.111
O3 C1 H7 113.111 O3 C2 O4 93.733
O3 C2 H6 113.111 O3 C2 H8 113.111
O4 C1 H5 113.111 O4 C1 H7 113.111
O4 C2 H6 113.111 O4 C2 H8 113.111
H5 C1 H7 109.927 H6 C2 H8 109.927
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 0.192      
2 C 0.192      
3 O -0.451      
4 O -0.451      
5 H 0.130      
6 H 0.130      
7 H 0.130      
8 H 0.130      


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 -19.114 0.000 0.000
y 0.000 -28.176 0.000
z 0.000 0.000 -22.916
Traceless
 xyz
x 6.432 0.000 0.000
y 0.000 -7.161 0.000
z 0.000 0.000 0.729
Polar
3z2-r21.457
x2-y29.062
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.387 0.000 0.000
y 0.000 3.039 0.000
z 0.000 0.000 3.749


<r2> (average value of r2) Å2
<r2> 58.028
(<r2>)1/2 7.618