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All results from a given calculation for CH3OOCH3 (dimethylperoxide)

using model chemistry: mPW1PW91/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at mPW1PW91/3-21G*
 hartrees
Energy at 0K-228.845466
Energy at 298.15K 
Nuclear repulsion energy131.320069
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 mPW1PW91/3-21G*
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 3161 3002 0.00      
2 Ag 3064 2910 0.00      
3 Ag 1594 1514 0.00      
4 Ag 1483 1408 0.00      
5 Ag 1252 1188 0.00      
6 Ag 1078 1024 0.00      
7 Ag 878 834 0.00      
8 Ag 462 439 0.00      
9 Au 3136 2978 83.26      
10 Au 1532 1455 14.60      
11 Au 1162 1103 0.10      
12 Au 195 185 4.03      
13 Au 27i 26i 14.25      
14 Bg 3135 2977 0.00      
15 Bg 1532 1455 0.00      
16 Bg 1167 1109 0.00      
17 Bg 246 233 0.00      
18 Bu 3161 3002 29.53      
19 Bu 3061 2907 60.46      
20 Bu 1587 1507 27.03      
21 Bu 1467 1393 4.69      
22 Bu 1155 1097 3.35      
23 Bu 1020 969 68.21      
24 Bu 284 270 14.71      

Unscaled Zero Point Vibrational Energy (zpe) 18392.2 cm-1
Scaled (by 0.9496) Zero Point Vibrational Energy (zpe) 17465.2 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 mPW1PW91/3-21G*
ABC
0.98460 0.14889 0.13607

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/3-21G*

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -0.464 0.596 0.000
O2 0.464 -0.596 0.000
C3 0.464 1.712 0.000
C4 -0.464 -1.712 0.000
H5 -0.175 2.598 0.000
H6 1.093 1.702 0.894
H7 1.093 1.702 -0.894
H8 0.175 -2.598 0.000
H9 -1.093 -1.702 0.894
H10 -1.093 -1.702 -0.894

Atom - Atom Distances (Å)
  O1 O2 C3 C4 H5 H6 H7 H8 H9 H10
O11.51101.45062.30792.02262.10852.10853.25792.54512.5451
O21.51102.30791.45063.25792.54512.54512.02262.10852.1085
C31.45062.30793.54661.09301.09351.09354.31953.85693.8569
C42.30791.45063.54664.31953.85693.85691.09301.09351.0935
H52.02263.25791.09304.31951.79221.79225.20834.48704.4870
H62.10852.54511.09353.85691.79221.78864.48704.04534.4231
H72.10852.54511.09353.85691.79221.78864.48704.42314.0453
H83.25792.02264.31951.09305.20834.48704.48701.79221.7922
H92.54512.10853.85691.09354.48704.04534.42311.79221.7886
H102.54512.10853.85691.09354.48704.42314.04531.79221.7886

picture of dimethylperoxide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 O2 C4 102.370 O1 C3 H5 104.462
O1 C3 H6 111.172 O1 C3 H7 111.172
O2 O1 C3 102.370 O2 C4 H8 104.462
O2 C4 H9 111.172 O2 C4 H10 111.172
H5 C3 H6 110.099 H5 C3 H7 110.099
H6 C3 H7 109.734 H8 C4 H9 110.099
H8 C4 H10 110.099 H9 C4 H10 109.734
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.304      
2 O -0.304      
3 C -0.361      
4 C -0.361      
5 H 0.228      
6 H 0.218      
7 H 0.218      
8 H 0.228      
9 H 0.218      
10 H 0.218      


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 -25.096 2.209 0.000
y 2.209 -17.511 0.000
z 0.000 0.000 -24.855
Traceless
 xyz
x -3.913 2.209 0.000
y 2.209 7.465 0.000
z 0.000 0.000 -3.552
Polar
3z2-r2-7.104
x2-y2-7.585
xy2.209
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.796 0.199 0.000
y 0.199 6.366 0.000
z 0.000 0.000 3.375


<r2> (average value of r2) Å2
<r2> 94.041
(<r2>)1/2 9.697