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

using model chemistry: BLYP/6-311G**

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/6-311G**
 hartrees
Energy at 0K-229.004819
Energy at 298.15K-229.010382
Nuclear repulsion energy128.962263
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/6-311G**
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 2899 2888 0.00      
2 Ag 1534 1528 0.00      
3 Ag 1046 1042 0.00      
4 Ag 850 847 0.00      
5 Au 1076 1072 0.00      
6 B1g 1290 1285 0.00      
7 B1g 927 924 0.00      
8 B1u 2925 2913 191.19      
9 B1u 1126 1122 14.64      
10 B1u 148 147 12.53      
11 B2g 2922 2911 0.00      
12 B2g 1078 1074 0.00      
13 B2u 1387 1382 14.53      
14 B2u 873 870 94.40      
15 B3g 995 991 0.00      
16 B3u 2880 2869 259.46      
17 B3u 1496 1490 19.92      
18 B3u 1005 1001 227.74      

Unscaled Zero Point Vibrational Energy (zpe) 13228.7 cm-1
Scaled (by 0.9961) Zero Point Vibrational Energy (zpe) 13177.1 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/6-311G**
ABC
0.44739 0.43495 0.24169

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/6-311G**

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.994 0.000 0.000
C2 0.994 0.000 0.000
O3 0.000 1.052 0.000
O4 0.000 -1.052 0.000
H5 -1.622 0.000 0.911
H6 1.622 0.000 0.911
H7 -1.622 0.000 -0.911
H8 1.622 0.000 -0.911

Atom - Atom Distances (Å)
  C1 C2 O3 O4 H5 H6 H7 H8
C11.98881.44771.44771.10592.77021.10592.7702
C21.98881.44771.44772.77021.10592.77021.1059
O31.44771.44772.10432.13702.13702.13702.1370
O41.44771.44772.10432.13702.13702.13702.1370
H51.10592.77022.13702.13703.24371.82143.7201
H62.77021.10592.13702.13703.24373.72011.8214
H71.10592.77022.13702.13701.82143.72013.2437
H82.77021.10592.13702.13703.72011.82143.2437

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 86.767 C1 O4 C2 86.767
O3 C1 O4 93.233 O3 C1 H5 112.936
O3 C1 H7 112.936 O3 C2 O4 93.233
O3 C2 H6 112.936 O3 C2 H8 112.936
O4 C1 H5 112.936 O4 C1 H7 112.936
O4 C2 H6 112.936 O4 C2 H8 112.936
H5 C1 H7 110.867 H6 C2 H8 110.867
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.135      
2 C 0.135      
3 O -0.339      
4 O -0.339      
5 H 0.102      
6 H 0.102      
7 H 0.102      
8 H 0.102      


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 -19.113 0.000 0.000
y 0.000 -28.749 0.000
z 0.000 0.000 -23.015
Traceless
 xyz
x 6.769 0.000 0.000
y 0.000 -7.685 0.000
z 0.000 0.000 0.916
Polar
3z2-r21.831
x2-y29.636
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.564 0.000 0.000
y 0.000 3.310 0.000
z 0.000 0.000 3.888


<r2> (average value of r2) Å2
<r2> 58.174
(<r2>)1/2 7.627