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: CID/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at CID/3-21G*
 hartrees
Energy at 0K-227.981798
Energy at 298.15K-227.988688
Nuclear repulsion energy131.069302
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 CID/3-21G*
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 3210 2987 0.00      
2 Ag 3130 2912 0.00      
3 Ag 1639 1525 0.00      
4 Ag 1537 1430 0.00      
5 Ag 1287 1198 0.00      
6 Ag 1128 1050 0.00      
7 Ag 892 830 0.00      
8 Ag 472 439 0.00      
9 Au 3199 2977 75.72      
10 Au 1590 1479 7.67      
11 Au 1199 1116 0.57      
12 Au 195 181 3.10      
13 Au 6 5 16.24      
14 Bg 3199 2976 0.00      
15 Bg 1590 1480 0.00      
16 Bg 1204 1121 0.00      
17 Bg 243 226 0.00      
18 Bu 3209 2986 36.95      
19 Bu 3125 2908 48.47      
20 Bu 1634 1521 16.39      
21 Bu 1521 1415 15.17      
22 Bu 1197 1113 0.80      
23 Bu 1038 966 79.09      
24 Bu 291 271 15.18      

Unscaled Zero Point Vibrational Energy (zpe) 18866.7 cm-1
Scaled (by 0.9305) Zero Point Vibrational Energy (zpe) 17555.5 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 CID/3-21G*
ABC
0.98885 0.14776 0.13517

See section I.F.4 to change rotational constant units
Geometric Data calculated at CID/3-21G*

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -0.464 0.593 0.000
O2 0.464 -0.593 0.000
C3 0.464 1.722 0.000
C4 -0.464 -1.722 0.000
H5 -0.173 2.607 0.000
H6 1.089 1.703 0.892
H7 1.089 1.703 -0.892
H8 0.173 -2.607 0.000
H9 -1.089 -1.703 0.892
H10 -1.089 -1.703 -0.892

Atom - Atom Distances (Å)
  O1 O2 C3 C4 H5 H6 H7 H8 H9 H10
O11.50641.46122.31542.03442.10712.10713.26282.54192.5419
O21.50642.31541.46123.26282.54192.54192.03442.10712.1071
C31.46122.31543.56691.08991.08951.08954.33863.86533.8653
C42.31541.46123.56694.33863.86533.86531.08991.08951.0895
H52.03443.26281.08994.33861.79001.79005.22494.49584.4958
H62.10712.54191.08953.86531.79001.78414.49584.04354.4196
H72.10712.54191.08953.86531.79001.78414.49584.41964.0435
H83.26282.03444.33861.08995.22494.49584.49581.79001.7900
H92.54192.10713.86531.08954.49584.04354.41961.79001.7841
H102.54192.10713.86531.08954.49584.41964.04351.79001.7841

picture of dimethylperoxide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 O2 C4 102.556 O1 C3 H5 104.841
O1 C3 H6 110.555 O1 C3 H7 110.555
O2 O1 C3 102.556 O2 C4 H8 104.841
O2 C4 H9 110.555 O2 C4 H10 110.555
H5 C3 H6 110.437 H5 C3 H7 110.437
H6 C3 H7 109.923 H8 C4 H9 110.437
H8 C4 H10 110.437 H9 C4 H10 109.923
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability