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-121G

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-121G
 hartrees
Energy at 0K-46.712828
Energy at 298.15K-46.719711
Nuclear repulsion energy76.476053
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-121G
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 3110 3031 0.00      
2 Ag 2989 2913 0.00      
3 Ag 1526 1487 0.00      
4 Ag 1453 1416 0.00      
5 Ag 1234 1202 0.00      
6 Ag 1020 994 0.00      
7 Ag 806 785 0.00      
8 Ag 450 439 0.00      
9 Au 3089 3010 116.04      
10 Au 1469 1432 15.47      
11 Au 1151 1121 0.52      
12 Au 190 185 4.26      
13 Au 57 56 17.34      
14 Bg 3088 3009 0.00      
15 Bg 1469 1431 0.00      
16 Bg 1151 1122 0.00      
17 Bg 236 230 0.00      
18 Bu 3110 3030 47.29      
19 Bu 2986 2910 101.31      
20 Bu 1521 1482 27.55      
21 Bu 1445 1408 2.49      
22 Bu 1150 1121 5.40      
23 Bu 996 970 90.28      
24 Bu 275 268 14.55      

Unscaled Zero Point Vibrational Energy (zpe) 17984.1 cm-1
Scaled (by 0.9745) Zero Point Vibrational Energy (zpe) 17525.5 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-121G
ABC
0.99722 0.14337 0.13176

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-121G

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -0.457 0.609 0.000
O2 0.457 -0.609 0.000
C3 0.457 1.749 0.000
C4 -0.457 -1.749 0.000
H5 -0.203 2.624 0.000
H6 1.083 1.743 0.901
H7 1.083 1.743 -0.901
H8 0.203 -2.624 0.000
H9 -1.083 -1.743 0.901
H10 -1.083 -1.743 -0.901

Atom - Atom Distances (Å)
  O1 O2 C3 C4 H5 H6 H7 H8 H9 H10
O11.52361.46152.35832.03052.11432.11433.29992.59532.5953
O21.52362.35831.46153.29992.59532.59532.03052.11432.1143
C31.46152.35833.61571.09621.09711.09714.38023.92153.9215
C42.35831.46153.61574.38023.92153.92151.09621.09711.0971
H52.03053.29991.09624.38021.80091.80095.26334.54464.5446
H62.11432.59531.09713.92151.80091.80214.54464.10404.4822
H72.11432.59531.09713.92151.80091.80214.54464.48224.1040
H83.29992.03054.38021.09625.26334.54464.54461.80091.8009
H92.59532.11433.92151.09714.54464.10404.48221.80091.8021
H102.59532.11433.92151.09714.54464.48224.10401.80091.8021

picture of dimethylperoxide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 O2 C4 104.358 O1 C3 H5 104.193
O1 C3 H6 110.648 O1 C3 H7 110.648
O2 O1 C3 104.358 O2 C4 H8 104.193
O2 C4 H9 110.648 O2 C4 H10 110.648
H5 C3 H6 110.387 H5 C3 H7 110.387
H6 C3 H7 110.427 H8 C4 H9 110.387
H8 C4 H10 110.387 H9 C4 H10 110.427
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-121G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.189      
2 O -0.189      
3 C -0.288      
4 C -0.288      
5 H 0.167      
6 H 0.155      
7 H 0.155      
8 H 0.167      
9 H 0.155      
10 H 0.155      


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 -26.227 2.491 0.000
y 2.491 -17.503 0.000
z 0.000 0.000 -25.442
Traceless
 xyz
x -4.754 2.491 0.000
y 2.491 8.331 0.000
z 0.000 0.000 -3.577
Polar
3z2-r2-7.154
x2-y2-8.724
xy2.491
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.599 0.121 0.000
y 0.121 7.327 0.000
z 0.000 0.000 4.125


<r2> (average value of r2) Å2
<r2> 81.454
(<r2>)1/2 9.025