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All results from a given calculation for CH3OOCH3 (dimethylperoxide)

using model chemistry: MP2/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 MP2/CEP-121G
 hartrees
Energy at 0K-46.087269
Energy at 298.15K-46.094035
Nuclear repulsion energy75.604112
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 MP2/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 3124 3049 0.00      
2 Ag 2984 2912 0.00      
3 Ag 1539 1502 0.00      
4 Ag 1465 1429 0.00      
5 Ag 1206 1177 0.00      
6 Ag 988 964 0.00      
7 Ag 730 712 0.00      
8 Ag 435 425 0.00      
9 Au 3109 3035 90.21      
10 Au 1482 1446 10.57      
11 Au 1144 1116 1.74      
12 Au 184 180 5.02      
13 Au 41 40 18.13      
14 Bg 3109 3034 0.00      
15 Bg 1483 1447 0.00      
16 Bg 1148 1120 0.00      
17 Bg 228 222 0.00      
18 Bu 3124 3049 42.67      
19 Bu 2982 2911 75.19      
20 Bu 1535 1498 19.44      
21 Bu 1462 1427 1.93      
22 Bu 1142 1115 1.06      
23 Bu 966 943 71.60      
24 Bu 267 261 18.16      

Unscaled Zero Point Vibrational Energy (zpe) 17936.9 cm-1
Scaled (by 0.976) Zero Point Vibrational Energy (zpe) 17506.4 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 MP2/CEP-121G
ABC
0.94520 0.14120 0.12908

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-121G

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -0.475 0.622 0.000
O2 0.475 -0.622 0.000
C3 0.475 1.762 0.000
C4 -0.475 -1.762 0.000
H5 -0.186 2.641 0.000
H6 1.098 1.732 0.906
H7 1.098 1.732 -0.906
H8 0.186 -2.641 0.000
H9 -1.098 -1.732 0.906
H10 -1.098 -1.732 -0.906

Atom - Atom Distances (Å)
  O1 O2 C3 C4 H5 H6 H7 H8 H9 H10
O11.56491.48462.38372.03972.12792.12793.32862.59782.5978
O21.56492.38371.48463.32862.59782.59782.03972.12792.1279
C31.48462.38373.65001.09951.09991.09994.41233.93753.9375
C42.38371.48463.65004.41233.93753.93751.09951.09991.0999
H52.03973.32861.09954.41231.81501.81505.29444.55784.5578
H62.12792.59781.09993.93751.81501.81274.55784.10104.4838
H72.12792.59781.09993.93751.81501.81274.55784.48384.1010
H83.32862.03974.41231.09955.29444.55784.55781.81501.8150
H92.59782.12793.93751.09994.55784.10104.48381.81501.8127
H102.59782.12793.93751.09994.55784.48384.10101.81501.8127

picture of dimethylperoxide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 O2 C4 102.797 O1 C3 H5 103.238
O1 C3 H6 109.954 O1 C3 H7 109.954
O2 O1 C3 102.797 O2 C4 H8 103.238
O2 C4 H9 109.954 O2 C4 H10 109.954
H5 C3 H6 111.221 H5 C3 H7 111.221
H6 C3 H7 110.991 H8 C4 H9 111.221
H8 C4 H10 111.221 H9 C4 H10 110.991
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability