return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for CH3OOCH3 (dimethylperoxide)

using model chemistry: mPW1PW91/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at mPW1PW91/6-311G*
 hartrees
Energy at 0K-230.151973
Energy at 298.15K-230.158989
Nuclear repulsion energy134.757944
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 mPW1PW91/6-311G*
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 3159 3015 0.00      
2 Ag 3040 2901 0.00      
3 Ag 1544 1473 0.00      
4 Ag 1474 1407 0.00      
5 Ag 1294 1235 0.00      
6 Ag 1114 1063 0.00      
7 Ag 876 836 0.00      
8 Ag 497 474 0.00      
9 Au 3107 2965 112.49      
10 Au 1482 1414 15.40      
11 Au 1194 1140 1.49      
12 Au 213 204 3.79      
13 Au 20 19 11.34      
14 Bg 3106 2965 0.00      
15 Bg 1480 1413 0.00      
16 Bg 1199 1145 0.00      
17 Bg 272 260 0.00      
18 Bu 3159 3014 38.14      
19 Bu 3036 2898 107.60      
20 Bu 1537 1466 26.90      
21 Bu 1464 1398 3.07      
22 Bu 1195 1141 12.96      
23 Bu 1096 1046 117.94      
24 Bu 307 293 11.29      

Unscaled Zero Point Vibrational Energy (zpe) 18431.5 cm-1
Scaled (by 0.9544) Zero Point Vibrational Energy (zpe) 17591.0 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 mPW1PW91/6-311G*
ABC
1.07537 0.15494 0.14284

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-311G*

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -0.432 0.577 0.000
O2 0.432 -0.577 0.000
C3 0.432 1.679 0.000
C4 -0.432 -1.679 0.000
H5 -0.224 2.549 0.000
H6 1.061 1.689 0.895
H7 1.061 1.689 -0.895
H8 0.224 -2.549 0.000
H9 -1.061 -1.689 0.895
H10 -1.061 -1.689 -0.895

Atom - Atom Distances (Å)
  O1 O2 C3 C4 H5 H6 H7 H8 H9 H10
O11.44181.40102.25591.98362.06632.06633.19442.51622.5162
O21.44182.25591.40103.19442.51622.51621.98362.06632.0663
C31.40102.25593.46771.09021.09391.09394.23363.79173.7917
C42.25591.40103.46774.23363.79173.79171.09021.09391.0939
H51.98363.19441.09024.23361.78711.78715.11854.41224.4122
H62.06632.51621.09393.79171.78711.79014.41223.98974.3729
H72.06632.51621.09393.79171.78711.79014.41224.37293.9897
H83.19441.98364.23361.09025.11854.41224.41221.78711.7871
H92.51622.06633.79171.09394.41223.98974.37291.78711.7901
H102.51622.06633.79171.09394.41224.37293.98971.78711.7901

picture of dimethylperoxide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 O2 C4 105.029 O1 C3 H5 104.854
O1 C3 H6 111.229 O1 C3 H7 111.229
O2 O1 C3 105.029 O2 C4 H8 104.854
O2 C4 H9 111.229 O2 C4 H10 111.229
H5 C3 H6 109.808 H5 C3 H7 109.808
H6 C3 H7 109.805 H8 C4 H9 109.808
H8 C4 H10 109.808 H9 C4 H10 109.805
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.231      
2 O -0.231      
3 C -0.415      
4 C -0.415      
5 H 0.223      
6 H 0.211      
7 H 0.211      
8 H 0.223      
9 H 0.211      
10 H 0.211      


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 -25.619 1.725 0.000
y 1.725 -18.582 0.000
z 0.000 0.000 -25.154
Traceless
 xyz
x -3.751 1.725 0.000
y 1.725 6.804 0.000
z 0.000 0.000 -3.054
Polar
3z2-r2-6.107
x2-y2-7.037
xy1.725
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.320 0.211 0.000
y 0.211 6.489 0.000
z 0.000 0.000 4.055


<r2> (average value of r2) Å2
<r2> 91.051
(<r2>)1/2 9.542