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All results from a given calculation for CH3OOCH3 (dimethylperoxide)

using model chemistry: mPW1PW91/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at mPW1PW91/6-31G
 hartrees
Energy at 0K-230.027469
Energy at 298.15K-230.034357
Nuclear repulsion energy131.414256
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 mPW1PW91/6-31G
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 3192 3022 0.00      
2 Ag 3076 2912 0.00      
3 Ag 1566 1483 0.00      
4 Ag 1484 1405 0.00      
5 Ag 1257 1190 0.00      
6 Ag 1048 992 0.00      
7 Ag 817 773 0.00      
8 Ag 465 440 0.00      
9 Au 3168 2999 79.57      
10 Au 1509 1428 18.52      
11 Au 1179 1116 0.09      
12 Au 191 180 4.63      
13 Au 44 42 17.80      
14 Bg 3167 2998 0.00      
15 Bg 1509 1428 0.00      
16 Bg 1182 1119 0.00      
17 Bg 239 226 0.00      
18 Bu 3192 3022 26.10      
19 Bu 3073 2909 65.89      
20 Bu 1560 1477 28.42      
21 Bu 1475 1396 0.84      
22 Bu 1172 1109 5.04      
23 Bu 1037 982 75.92      
24 Bu 283 268 15.58      

Unscaled Zero Point Vibrational Energy (zpe) 18442.8 cm-1
Scaled (by 0.9466) Zero Point Vibrational Energy (zpe) 17458.0 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 mPW1PW91/6-31G
ABC
1.00866 0.14742 0.13529

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -0.454 0.606 0.000
O2 0.454 -0.606 0.000
C3 0.454 1.721 0.000
C4 -0.454 -1.721 0.000
H5 -0.196 2.598 0.000
H6 1.080 1.715 0.895
H7 1.080 1.715 -0.895
H8 0.196 -2.598 0.000
H9 -1.080 -1.715 0.895
H10 -1.080 -1.715 -0.895

Atom - Atom Distances (Å)
  O1 O2 C3 C4 H5 H6 H7 H8 H9 H10
O11.51391.43822.32672.00872.09422.09423.26872.56532.5653
O21.51392.32671.43823.26872.56532.56532.00872.09422.0942
C31.43822.32673.55981.09141.09231.09234.32653.86823.8682
C42.32671.43823.55984.32653.86823.86821.09141.09231.0923
H52.00873.26871.09144.32651.79091.79095.21024.49294.4929
H62.09422.56531.09233.86821.79091.79044.49294.05404.4318
H72.09422.56531.09233.86821.79091.79044.49294.43184.0540
H83.26872.00874.32651.09145.21024.49294.49291.79091.7909
H92.56532.09423.86821.09234.49294.05404.43181.79091.7904
H102.56532.09423.86821.09234.49294.43184.05401.79091.7904

picture of dimethylperoxide state 1 conformation 1
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