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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-46.702422
Energy at 298.15K-46.709240
Nuclear repulsion energy76.288572
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 3149 3050 0.00      
2 Ag 3032 2936 0.00      
3 Ag 1520 1472 0.00      
4 Ag 1450 1404 0.00      
5 Ag 1227 1188 0.00      
6 Ag 1019 987 0.00      
7 Ag 805 779 0.00      
8 Ag 447 432 0.00      
9 Au 3130 3031 146.39      
10 Au 1464 1418 16.06      
11 Au 1143 1107 0.01      
12 Au 185 179 4.54      
13 Au 56 54 20.73      
14 Bg 3129 3030 0.00      
15 Bg 1463 1417 0.00      
16 Bg 1143 1107 0.00      
17 Bg 230 222 0.00      
18 Bu 3149 3050 73.77      
19 Bu 3028 2932 115.75      
20 Bu 1514 1466 28.56      
21 Bu 1441 1395 0.61      
22 Bu 1142 1106 5.32      
23 Bu 994 962 75.54      
24 Bu 274 265 17.07      

Unscaled Zero Point Vibrational Energy (zpe) 18065.9 cm-1
Scaled (by 0.9684) Zero Point Vibrational Energy (zpe) 17495.0 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 B3LYP/CEP-31G
ABC
0.98985 0.14298 0.13138

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 -0.458 0.610 0.000
O2 0.458 -0.610 0.000
C3 0.458 1.751 0.000
C4 -0.458 -1.751 0.000
H5 -0.206 2.631 0.000
H6 1.088 1.744 0.906
H7 1.088 1.744 -0.906
H8 0.206 -2.631 0.000
H9 -1.088 -1.744 0.906
H10 -1.088 -1.744 -0.906

Atom - Atom Distances (Å)
  O1 O2 C3 C4 H5 H6 H7 H8 H9 H10
O11.52581.46412.36082.03662.12102.12103.30792.59912.5991
O21.52582.36081.46413.30792.59912.59912.03662.12102.1210
C31.46412.36083.62021.10251.10341.10344.38903.92753.9275
C42.36081.46413.62024.38903.92753.92751.10251.10341.1034
H52.03663.30791.10254.38901.81201.81205.27754.55334.5533
H62.12102.59911.10343.92751.81201.81244.55334.11044.4922
H72.12102.59911.10343.92751.81201.81244.55334.49224.1104
H83.30792.03664.38901.10255.27754.55334.55331.81201.8120
H92.59912.12103.92751.10344.55334.11044.49221.81201.8124
H102.59912.12103.92751.10344.55334.49224.11041.81201.8124

picture of dimethylperoxide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 O2 C4 104.278 O1 C3 H5 104.142
O1 C3 H6 110.612 O1 C3 H7 110.612
O2 O1 C3 104.278 O2 C4 H8 104.142
O2 C4 H9 110.612 O2 C4 H10 110.612
H5 C3 H6 110.453 H5 C3 H7 110.453
H6 C3 H7 110.416 H8 C4 H9 110.453
H8 C4 H10 110.453 H9 C4 H10 110.416
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 -0.198      
2 O -0.198      
3 C -0.361      
4 C -0.361      
5 H 0.201      
6 H 0.180      
7 H 0.180      
8 H 0.201      
9 H 0.180      
10 H 0.180      


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 -25.702 2.734 0.000
y 2.734 -16.756 0.000
z 0.000 0.000 -24.872
Traceless
 xyz
x -4.888 2.734 0.000
y 2.734 8.532 0.000
z 0.000 0.000 -3.643
Polar
3z2-r2-7.287
x2-y2-8.947
xy2.734
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.931 0.055 0.000
y 0.055 6.702 0.000
z 0.000 0.000 3.401


<r2> (average value of r2) Å2
<r2> 81.319
(<r2>)1/2 9.018