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All results from a given calculation for CH3OOCH3 (dimethylperoxide)

using model chemistry: HF/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at HF/3-21G*
 hartrees
Energy at 0K-227.580306
Energy at 298.15K-227.587368
Nuclear repulsion energy132.736413
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 HF/3-21G*
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 3302 2981 0.00      
2 Ag 3225 2911 0.00      
3 Ag 1699 1533 0.00      
4 Ag 1607 1451 0.00      
5 Ag 1367 1234 0.00      
6 Ag 1237 1116 0.00      
7 Ag 957 864 0.00      
8 Ag 498 449 0.00      
9 Au 3300 2979 80.00      
10 Au 1655 1494 8.82      
11 Au 1257 1135 1.17      
12 Au 198 179 3.38      
13 Au 40 36 20.23      
14 Bg 3299 2978 0.00      
15 Bg 1655 1494 0.00      
16 Bg 1261 1138 0.00      
17 Bg 246 222 0.00      
18 Bu 3302 2980 42.06      
19 Bu 3222 2908 64.41      
20 Bu 1693 1529 16.60      
21 Bu 1587 1433 27.64      
22 Bu 1262 1139 2.53      
23 Bu 1090 984 136.73      
24 Bu 301 271 15.82      

Unscaled Zero Point Vibrational Energy (zpe) 19629.5 cm-1
Scaled (by 0.9026) Zero Point Vibrational Energy (zpe) 17717.6 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 HF/3-21G*
ABC
1.04735 0.14966 0.13769

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/3-21G*

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -0.446 0.581 0.000
O2 0.446 -0.581 0.000
C3 0.446 1.716 0.000
C4 -0.446 -1.716 0.000
H5 -0.197 2.584 0.000
H6 1.065 1.705 0.885
H7 1.065 1.705 -0.885
H8 0.197 -2.584 0.000
H9 -1.065 -1.705 0.885
H10 -1.065 -1.705 -0.885

Atom - Atom Distances (Å)
  O1 O2 C3 C4 H5 H6 H7 H8 H9 H10
O11.46471.44442.29652.01872.08092.08093.22912.52732.5273
O21.46472.29651.44443.22912.52732.52732.01872.08092.0809
C31.44442.29653.54621.08031.07931.07934.30703.84283.8428
C42.29651.44443.54624.30703.84283.84281.08031.07931.0793
H52.01873.22911.08034.30701.77411.77415.18254.46394.4639
H62.08092.52731.07933.84281.77411.76904.46394.01994.3919
H72.08092.52731.07933.84281.77411.76904.46394.39194.0199
H83.22912.01874.30701.08035.18254.46394.46391.77411.7741
H92.52732.08093.84281.07934.46394.01994.39191.77411.7690
H102.52732.08093.84281.07934.46394.39194.01991.77411.7690

picture of dimethylperoxide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 O2 C4 104.261 O1 C3 H5 105.264
O1 C3 H6 110.240 O1 C3 H7 110.240
O2 O1 C3 104.261 O2 C4 H8 105.264
O2 C4 H9 110.240 O2 C4 H10 110.240
H5 C3 H6 110.467 H5 C3 H7 110.467
H6 C3 H7 110.070 H8 C4 H9 110.467
H8 C4 H10 110.467 H9 C4 H10 110.070
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.385      
2 O -0.385      
3 C -0.243      
4 C -0.243      
5 H 0.212      
6 H 0.208      
7 H 0.208      
8 H 0.212      
9 H 0.208      
10 H 0.208      


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 -25.537 2.716 0.000
y 2.716 -17.106 0.000
z 0.000 0.000 -25.009
Traceless
 xyz
x -4.480 2.716 0.000
y 2.716 8.167 0.000
z 0.000 0.000 -3.687
Polar
3z2-r2-7.374
x2-y2-8.431
xy2.716
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.544 -0.063 0.000
y -0.063 6.157 0.000
z 0.000 0.000 3.231


<r2> (average value of r2) Å2
<r2> 93.111
(<r2>)1/2 9.649