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: B3LYP/CEP-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at B3LYP/CEP-31G*
 hartrees
Energy at 0K-46.762420
Energy at 298.15K-46.769368
Nuclear repulsion energy77.821742
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 B3LYP/CEP-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 3125 3018 0.00      
2 Ag 3022 2919 0.00      
3 Ag 1516 1464 0.00      
4 Ag 1452 1402 0.00      
5 Ag 1258 1215 0.00      
6 Ag 1067 1031 0.00      
7 Ag 846 817 0.00      
8 Ag 473 457 0.00      
9 Au 3091 2985 136.50      
10 Au 1457 1407 9.61      
11 Au 1162 1123 0.24      
12 Au 209 201 4.09      
13 Au 41 40 13.55      
14 Bg 3090 2984 0.00      
15 Bg 1456 1406 0.00      
16 Bg 1165 1125 0.00      
17 Bg 262 253 0.00      
18 Bu 3125 3018 66.86      
19 Bu 3018 2914 127.03      
20 Bu 1509 1458 26.33      
21 Bu 1442 1393 6.14      
22 Bu 1163 1123 10.97      
23 Bu 1046 1010 110.14      
24 Bu 298 288 13.52      

Unscaled Zero Point Vibrational Energy (zpe) 18146.3 cm-1
Scaled (by 0.9657) Zero Point Vibrational Energy (zpe) 17523.9 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 B3LYP/CEP-31G*
ABC
1.02817 0.15017 0.13814

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-31G*

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -0.445 0.590 0.000
O2 0.445 -0.590 0.000
C3 0.445 1.705 0.000
C4 -0.445 -1.705 0.000
H5 -0.216 2.588 0.000
H6 1.080 1.710 0.906
H7 1.080 1.710 -0.906
H8 0.216 -2.588 0.000
H9 -1.080 -1.710 0.906
H10 -1.080 -1.710 -0.906

Atom - Atom Distances (Å)
  O1 O2 C3 C4 H5 H6 H7 H8 H9 H10
O11.47781.42632.29442.01142.09782.09783.24612.55222.5522
O21.47782.29441.42633.24612.55222.55222.01142.09782.0978
C31.42632.29443.52331.10361.10621.10624.29893.84783.8478
C42.29441.42633.52334.29893.84783.84781.10361.10621.1062
H52.01143.24611.10364.29891.80861.80865.19454.47694.4769
H62.09782.55221.10623.84781.80861.81194.47694.04504.4322
H72.09782.55221.10623.84781.80861.81194.47694.43224.0450
H83.24612.01144.29891.10365.19454.47694.47691.80861.8086
H92.55222.09783.84781.10624.47694.04504.43221.80861.8119
H102.55222.09783.84781.10624.47694.43224.04501.80861.8119

picture of dimethylperoxide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 O2 C4 104.366 O1 C3 H5 104.601
O1 C3 H6 111.224 O1 C3 H7 111.224
O2 O1 C3 104.366 O2 C4 H8 104.601
O2 C4 H9 111.224 O2 C4 H10 111.224
H5 C3 H6 109.856 H5 C3 H7 109.856
H6 C3 H7 109.958 H8 C4 H9 109.856
H8 C4 H10 109.856 H9 C4 H10 109.958
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.151      
2 O -0.151      
3 C -0.407      
4 C -0.407      
5 H 0.206      
6 H 0.176      
7 H 0.176      
8 H 0.206      
9 H 0.176      
10 H 0.176      


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 -25.240 2.075 0.000
y 2.075 -17.873 0.000
z 0.000 0.000 -24.758
Traceless
 xyz
x -3.924 2.075 0.000
y 2.075 7.127 0.000
z 0.000 0.000 -3.202
Polar
3z2-r2-6.404
x2-y2-7.367
xy2.075
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.984 0.094 0.000
y 0.094 6.439 0.000
z 0.000 0.000 3.679


<r2> (average value of r2) Å2
<r2> 78.644
(<r2>)1/2 8.868